Toyota Prius User-Guide
Fifth Edition, First Revision for the HSD (2004-2006) model
Disclaimer:
All the information stated in this document was provided by Prius owners. None were affiliated with Toyota Motor Corporation,
except as customers.
This document is not sanctioned by Toyota Motor Corporation or any of its affiliates.
The ideas, suggestions, and opinions offered in this document have not been endorsed by the manufacturer of those specific
components or Toyota Motor Corporation.
Any harm or damage that may result from the application of or the following of any ideas, suggestions, or opinions contained in
this document is the sole responsibility of the individual that applied or followed said ideas, suggestions or opinions.
The authors of this document hereby declare that they cannot and will not be held liable, in any fashion, for the content or the use
of this document.
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Reducing Emissions is the highest priority for Prius. It strives to remain a AT-PZEV (Advanced
Technology - Partial Zero Emission Vehicle) at all times, which means the catalytic-converter must
be kept warm even if it requires consuming some gas to accomplish that. Fortunately, you still get
better than average mileage, even if the engine doesn't shut off right away.
Engine Warm-Up
Shutdown
Use the remote or push a door-button (or the one on the hatch) when leaving your Prius. That will
confirm that all the doors really did get shut tightly and the power for the hybrid system is off. If
you don't, the 12-volt auxiliary battery may get drained completely or the alarm might not be able
to protect the car.
Off Confirm
There is a small electric-pump that pumps 3 liters of coolant into a thermal container (to keep it hot)
every time you turn the hybrid system power OFF. When the power is turned back ON, the coolant
is pump back into the engine. This process reduces emissions, by achieving warm-up much faster
than with an engine that would normally have to heat itself up. This process also helps to reduce
wear & tear on the engine.
Whirring Sound
Cruise-Control
Slowing down to less than 24 MPH (39 km/h) will cause the cruise-control "resume" memory to
reset. So if you have to slow down or stop, you'll need to set the speed again.
24 MPH minimum
Some owners have observed an increase in MPG from using the cruise-control, others have not.
Results vary depending on your particular driving habits and road conditions.
MPG
If you don't have a sensitive enough foot but would still like to enjoy stealth driving on a light
traffic road, just set the cruise-control. This can be done all the way up to 42 MPH (68 km/h) on
flat or declining terrain without making the engine startup.
Stealth
The CVT (Continuously Variable Transmission, "Planetary" type) makes the cruise-control in Prius
remarkably smooth. You'll notice the "no shifting" characteristic of the drive when going up hills
and accelerating aggressively. Many consider this smoothness as a luxury feature.
Smooooooth
Neutral
To shift into neutral and keep it there without any chance of the engine starting, do the following:
No Engine
1. Insert the FOB (not necessary if you have SE/SS).
2. Without stepping on the brake pedal, press the "Power" button twice.
3. Use the lever to shift in the Neutral position.
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Reverse
Some people find the reverse beeper distracting. Although there isn't a method to change the
repetitive beeping to just a short warning, there is a way to disable it completely. To do that,
carefully follow these steps:
Beeper Disable
1. Switch to the odometer/trip value to display "ODO" by pushing the “ODO TRIP” button
shown in the lower-right corner of the photo below. If the speedometer-cluster was
already showing “ODO”, make sure to cycle thru each option back to “ODO” again.
2. Power OFF (push the "Power" button).
3. Power ON (push the "Power" button again).
4. Within 6 seconds of powering back ON, push & hold the button for “ODO” for a
minimum of 10 seconds.
5. While still holding the button for "ODO", shift into "R" (Reverse), then to "P" (Park).
6. "b-on" should display on the odometer/trip-meter now. Push the "ODO TRIP" button
to switch the mode to "b-oFF", as shown here:
7. Power OFF (push the "Power" button). That’s it! The beep should now be disabled.
Note #1: If the sequence above failed, it may have due to the "ODO" setting not having been visible
recently. In that case, all you have to do is drive with it that way for a few miles. The next
time you try to disable the beeper, the process should work.
Note #2: If you ever disconnect the 12-volt auxiliary battery from the system (or drain it dead),
you may have to repeat the disable process again.
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Hybrid Driving
The gasoline engine is most efficient when running around 70% maximum. So if you can't press
lightly enough on the pedal to accelerate using only electricity, go ahead and press a little harder
than usual. That brisk (but not aggressive) increase in speed will save a small amount of gas,
resulting in an overall efficiency gain.
From a Stop
The hybrid system has 2 electric motors. When you encounter a large hill, those motors are
automatically taken advantage of. The gasoline engine will rev to its most efficient high-power
RPM. That provides thrust directly to the tires, generates electricity for the motor, and recharges
the battery-pack all at the same time. So to the surprise of many new owners, large hills don’t drain
the system. You’ll still have plenty of reserve power available when you reach the top.
Climbing Hills
Just like with traditional vehicles, efficiency drops the faster you drive on the highway. 60 MPH
(96 km/h) is more efficient than 70 MPH (113 km/h). Speeding up to 75 MPH (121 km/h), you'll
observe MPG drop even more. It pays to drive slower.
On the Highway
Without the Pack
The electric motor doesn't actually need electricity from the battery-pack. The gasoline engine
creates electricity immediately while you drive. So quite frequently, on the multi-display you'll see
that the motor is being fed directly from the engine and the battery-pack isn't even being used. And
sometimes, while both the engine and motor are providing thrust, the engine will also recharge the
battery-pack at the same time.
At highway speeds, using the A/C (air-conditioner, cold setting) or vent to remain cool will likely
result in slightly higher MPG than having the windows open.
A/C Instead
Cruising
A beneficial technique for efficient cruising is to feather the accelerator pedal at particular times.
Learning to do this is simple and will quickly become second nature with very little practice. (In
fact, you may already have that foot control if you in-line skate or bicycle occasionally.) To do it,
just lightly reduce pressure on the accelerator-pedal whenever you encounter a section of road
that’s perfectly flat or has a slight decline. The MPG indicator will sometimes jump all the way to
the +100 mark, even though your speed ends up dropping only 1 MPH. Then lightly push the
accelerator-pedal to efficiently regain that speed afterward. Overall, MPG will climb a little bit
when each time you do that.
You’ll end up taking advantage of the hybrid design. Changes in the road pitch naturally cause
changes in speed anyway. Using the multi-display and large digital speedometer helps you
discover when gains from that are possible.
Brakes
When you reduce pressure on the accelerator-pedal or use the brake-pedal, excess speed turns a
motor, causing regeneration of electricity to recharge the battery-pack. The regenerator takes
advantage of the kinetic energy that would have otherwise been lost. The brake pads & shoes are
not used as much as in a traditional vehicle. This not only makes the Prius more efficient, it also
indicates the brakes will last longer.
Regenerator
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Stealth Driving
While the gasoline engine is off and you’re driving using just battery power, the mode you’re in is
called "stealth" (since movement is totally silent).
Engine Off
Invoking "stealth" is easy once the engine has warmed up (and you aren't running the A/C or Heater
too heavily). While driving, just find a street section without any inclines then lift your foot from
the accelerator-pedal. The engine will shut off within a few moments. Once it does, lightly place
your foot back on the accelerator-pedal to continue driving with only electricity. Another way to
invoke stealth is to just stop completely, that will make the engine shut off.
The 50 kW electric motor is designed to propel the Prius up to 42 MPH (68 km/h). It takes a steady
foot though. Slower speeds, like 35 MPH (56 km/h) and 30 MPH (48 km/h), are easier. Beyond
that maximum speed or in conditions when additional power is needed, the motor works in
combination with the gasoline engine. Though, you will discover above 42 MPH (68 km/h) that
there are times when the engine will spin (pistons in motion) without any fuel being consumed; it is
a normal function of the Planetary-CVT.
Up to 42 MPH
Acceleration
Accelerating in "stealth" can be very slow. Also using the gasoline engine is both quicker and
(surprisingly) more efficient, so don't be afraid to consume a little bit of gas. Remember that even
if you use the battery and get "+100 MPG", the engine must run later to recharge it. So short-term
gains may actually result in an overall loss.
Only the lowest setting for the air-conditioner & heater work in "stealth". Higher settings and
airflow durations longer than a minute or two will require the gasoline engine to run.
A/C & Heater
Be Careful !
Be careful while driving in "stealth", especially in parking lots. Some people use only their ears to
verify that it's safe, not their eyes! So having a car that's completely silent means you'll probably
have someone step out in front of it without even realizing you’re driving right at him or her.
"B" Mode
You can engage or disengage engine-braking at anytime while driving.
On/Off Anytime
Avoid using this mode unless absolutely necessary, since it will cause MPG to drop. There is no
charging benefit over regular braking either.
Engine-Braking
The "B" mode works like an exhaust brake on a large truck (except, it's totally silent). The engine
is used to slow down the vehicle, allowing you to reduce reliance on the regular brakes. So for
steep declines, like driving down a mountain, it's a great way to avoid overheating caused by
friction from the brake drums & shoes.
A special use of "B" is the ability to shift into it on-the-fly without having to take your eyes off the
road. Finding yourself taking a turn on snow or ice a little bit too fast, you'll discover "B" does an
absolutely fantastic job of slowing the car enough to retain traction without any risk whatsoever of
the wheels slipping from braking too hard... since you aren't using the brakes at all.
Winter Slowing
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Radio
Press the "SCAN" button by the radio tuner knob. It will begin scanning for radio channels. When
it does finds a station, a few seconds will play, then it will automatically scan for the next. Press
the "SCAN" button again when you want the scanning to stop.
Channel Scan
If you press then hold the "SCAN" button, only your preset radio channels will be scanned.
In additions to using the knob on the dashboard, you also have the option of adjusting the tuner for
the radio via the buttons on the steering-wheel. Just press & hold either the up or down button with
your left thumb.
Tuner Adjust
CD Change
CD
Holding the track-change button on the steering-wheel, rather than just quickly pressing it, will
cause the CD to be changed instead.
Audio Buttons
Pressing the "Audio" button next to the Multi-Display will reveal the Radio Preset or CD Control
screen, depending on what is playing at that moment.
Audio Button
Pressing the "Audio" button another time will return you to the screen you were previously
viewing, "Consumption" or "Energy Monitor" or "Navigation".
Pressing the "Mode" button on the Steering-Wheel toggles between the AM, FM1, FM2, and CD
modes of the audio system.
Mode Button
Holding the "Mode" button for a few seconds will toggle the power for the audio system on & off.
Inside Air
Avoid using this mode during the winter, since it causes frost on the inside of the windows.
Recirculate
Recirculating warm inside air will prevent the engine from needing to run as often; however, the
moisture you naturally exhale will build up after awhile. Allowing the fresh cold air from outside
to be drawn in will keep the humidity low. The resulting minor MPG penalty is well worth always
having clear glass.
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Outside Air
Changing the "Air Conditioner" mode to draw in air directly from the outside for cooling rather
than allowing it to be influenced by the heater-core isn’t an obvious process, but it is surprisingly
easily once you know how.
Vent
Many people call this "opening the vent" and it is used most frequently in the summer when you
want to avoid having to turn on the A/C.
Here’s how:
1. Press the "A/C" button so the yellow-bar above it disappears.
2. Press the circulation button so the yellow-bar above the "outside car arrow" appears.
3. Reduce the temperature to the lowest setting, called "Max Cold".
The Multi-Display will then resemble the example above.
You may alter the blowing location to any of the 4 settings available and the blowing speed to any
of the 7 settings available.
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UNDERSTANDING
MPG Measurement
LIFETIME is the most useful measurement. Total miles driven, divided by total gallons consumed,
informs you how efficiently the car has performed overall.
Lifetime
TANK is the measurement between each fill up. You press the RESET button when the tank is
full. The results are informative, but not perfectly accurate. In cold weather, the bladder inside the
gas tank shrinks. This reduces the overall capacity making the "full" level variable. Also, "full"
can be misrepresented if the pump doesn't shut off at the proper time. These factors make
calculations based on fill-up less accurate.
Tank
TRIP is mostly for fun, since a multitude of variables can affect the measurement to a single
destination. Watch the 5-minute summary segments shown on the multi-display. Remember
though, if you were to start a drive downhill, with a tail wind, a warm engine, a fully charged
battery-pack, and a warm outside temperature, the MPG would be very impressive for that
particular trip. But then if the return trip back was uphill, against the wind, with a cold engine, a
drained battery-pack, and a cold outside temperature, the MPG would appear very disappointing.
In summary, trip results can vary greatly. The overall average is what really matters.
Trip
Tire pressure may have dropped. For every 10 F degrees colder, pressure will automatically drop
1 PSI. Verify you still have as much air in the tires as you think they do.
Sudden Drop
Increased use of the heater or air-conditioner (which includes the defroster) will force the engine to
run more often. Try a less demanding setting.
When the temperature drops below freezing, you may notice the engine has to run quite a bit longer
to warm up the catalytic-converter. This is to keep the Prius emissions Super-Ultra low. Avoid
driving short trips; instead, take advantage of the time after warm up is complete by running several
errands at once.
A dirty engine air-filter will also cause the MPG to drop. Check it routinely, especially as the
seasons change. Once flow becomes visibly restricted (dark colored rather than white), the time
has come replace it.
Don’t forget that new tires require a break-in period. Before that the tire surface and tread edges
will be rough, causing MPG to be lower than you expect. It takes about 1,000 miles (1,600 km)
before enough wear (barely visible to a trained eye) occurs to allow less abrasive contact with the
road. And since front tires wear more than those in the rear, expect another break-in period the first
time the rear tires are rotated to the front. Fortunately, that reduced MPG will only last a few
hundred miles.
Tire Break-In
Increasing MPG
Minimal use is the key. Using the Heater or the A/C (which includes the defroster) on anything but
a low setting may prevent the engine from shutting off. That will reduce MPG. So, try to avoid
high demand use. Fortunately, on the highway using the A/C is still more efficient than opening
the windows.
A/C & Heater
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Just like with traditional vehicles, efficiency drops the faster you drive on a highway. 60 MPH
(96 km/h) is more efficient than 70 MPH (113 km/h). Speeding up to 75 MPH (121 km/h), you'll
observe MPG drop even more. It pays to drive slower (obey the speed-limit). Think of it this
way, pedaling a bicycle rapidly takes much more energy than pedaling at a moderate rate.
On the Highway
YMMV
"Your Mileage May Vary" That simple statement about the EPA ratings shown on the new
vehicle window sticker is often overlooked, yet it makes a significant difference depending on the
type of driving you do. Reading this quote provided by the EPA about Prius reveals why: "Actual
Mileage will vary with options, driving conditions, driving habits and vehicle's condition. Results
reported to EPA indicate that the majority of vehicles with these estimates will achieve between 51
and 69 mpg in the city and between 43 and 59 on the highway."
EPA tests are generalizations (performed under ideal conditions) intended to make vehicle
comparisons easier, not to specify what MPG you will actually get. In fact, they rarely reflect the
MPG in real-world driving experiences.
Brisk Acceleration is an often misunderstood benefit. There's no need to hold back. A gasoline
engine works more efficiently when running at higher RPM, about 70 percent of maximum. Take
advantage of that by getting to cruising speed quickly (but not aggressively, please drive safely).
And remember, while the engine running it is also generating electricity for later use.
Driving
Coast whenever you have the opportunity. Using the feather technique helps. By lifting your foot
lightly from the accelerator-pedal, you can invoke an efficient computer-controlled glide without
decelerating much at all (less than 1 MPH). With good road conditions and a bit of practice, you'll
find yourself doing this instinctively.
Look Ahead. If you see a light turning red or a need to slow down in the distance, there's no
reason to continue holding the accelerator-pedal. Remove your foot and allow the generator to
decelerate the Prius. That will increase your MPG, charge the battery-pack, and prolong the life
of your brakes.
42/40 PSI (2.9/2.8 bar) is what many Prius owners strongly recommend. The original tires for the
Classic (2001-2003) Prius support a maximum cold pressure of 50 PSI (3.4 bar), for the HSD
(2004-2005) Prius 44 PSI (3.0 bar). So that pressure increase is well within the design
specifications. Many of the alternate tires available support a maximum cold pressure of 44 PSI
(3.0 bar) too. Whatever you decide, just remember that low pressure results in a MPG drop and the
tires wear out faster. Tires will not bulge like in decades past; manufacturers provide much better
quality now which maintains a flat contact surface all the way up to the maximum pressure.
Tire Care
Every 5,000 (8,000 km) the tires should be rotated, for best lifetime performance. Rotation is
preferred in a roll-back, roll-forward pattern.
Measuring the PSI should be done only when the tires are cold, since driving heats up the air
inside the tires making the results inaccurate... giving you the impression more pressure is higher
than it really is.
Check Often since temperature causing pressure to drop, 1 PSI for every 10F degrees. Air will
naturally leak out from normal use too.
Prius was designed to run with 87 Octane gasoline (85 in high altitudes). Some owners have
experimented with higher octanes, but found there wasn't any MPG improvement. Also, bear in
mind that higher octane gasoline may trigger an emission sensor alert. So just save money and
continue using the less expensive 87 octane gas.
87 Octane Gas
"B" Mode
Avoid using this mode unless absolutely necessary; it will cause MPG to drop.
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Hitch Racks & Roof Carriers cause aerodynamic drag. So, expect a MPG drop when you use one.
External Loads
Short Trips are horribly inefficient for all vehicles. Prius is no exception; however, it’s far more
noticeable since the Multi-Display provides immediate feedback to actually show you the lower
MPG. The efficiency benefits of the system are not utilized until after warm-up is complete... that's
engine, emissions system, and tires. So try to run several errands at once to take advantage of an
already warmed up car.
Engine Warm-Up
PZEV (Partial Zero Emission Vehicle) is what Prius strives to remain whenever active, even during
warm-up. That means the catalytic-converter must be kept hot even if that requires using some gas
to do it. Fortunately, you still get better than average mileage, even if the engine doesn't shut off
right away.
5W-30 oil is strongly recommended (real or synthetic).
5W-30 Oil
If a service person puts 10W-30 in by mistake, you may complain since it will negatively impact
your MPG slightly and may affect performance in below freezing temperatures. The text on the
engine oil cap clearly states 5W-30 should be used.
Owners have observed minor MPG improvements by switching to synthetic oil.
Synthetic Oil
Oil Level
Plus, since it protects the engine better than real oil and makes extremely cold startups even easier,
switching from real oil should be a simple choice.
Too much oil can decrease MPG. Verify the level is never above the max mark on the dipstick.
Unfortunately, overfilling is a problem commonly overlooked. Oil change services routinely pump
oil from large barrels, rather than using quart-size bottles. That makes overfilling very easy to do.
Taking a moment afterward to check afterward is truly beneficial.
The multi-display averages optimistically, so it will usually read about 1.4 MPG too high for most
owners. The "bladder effect" (caused by the bladder in the gas tank shrinking due to temperatures
below freezing), which is very noticeable in the Spring & Fall, causes the readout value and manual
calculations to vary greatly for individual measurements. Averaging several fill up amounts
documented at the gas station will provide the actual MPG you've been getting. For an example of
how to do this, refer to this webpage... http://john1701a.com/prius/prius-data.htm
Measurement
For the first 200 Miles (322 km):
Break-In
• avoid rapid deceleration (hard stops)
• avoid high speeds (more than 70 MPH, 113 km/h)
For the first 600 Miles (966 km):
• avoid rapid acceleration
• avoid racing (high RPM) the engine
After roughly 10,000 Miles (16,100 km):
• enjoy a MPG increase, from the moving parts having loosened
Even at 30,000 Miles (48,300 km):
• you may continue observe minor MPG increases as the car ages
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EPA Estimates
The intent of the EPA efficiency values posted on each new vehicle window-sticker is only to
provide a basis for comparison, not an actual MPG expectation... as commonly believed.
Purpose
Read the fine-print on this scan of a 2004 Prius window-sticker:
Don’t be mislead by the big numbers. Real-World results vary significantly.
Pay very close attention to the fact that the EPA tests are all performed under ideal conditions,
those that don't actually reflect real-world temperature or driving habits. Think of those values
reported as optimal, not realistic. You may be able to achieve them from occasionally, but not on
a routine basis.
Ideal Conditions
Ranging Values
As mentioned on the window-sticker, there is a range of expected efficiency values. The large
numbers are really nothing but an average. In fact, the MPG isn't even constant for each vehicle.
Driving conditions, method of driving, and the influence of multiple drivers can all have a major
impact, causing fluctuation. Tank-to-tank measurements can vary quite a bit as a result, without
even taking into account the effect of seasonal cycles. None of these factors are represented when
the EPA tests are performed.
Back when the testing procedures were established way back in 1977, the speed limit on most
highways was only 55 MPH (88.5 km/h). That’s quite unrealistic for travel nowadays. Many
drivers cruise at speeds much faster. That causes a significant efficiency reduction, which is not
indicated on the window-sticker.
Unrealistic Speed
The "perfect summer day" climate portrayed during the testing is not what people actually drive
their vehicle in a great majority of the year. Winter extremes cause efficiency to drop significantly,
as do the Summer extremes. Factors such as temperature, wind, and moisture have a major
influence, causing the vehicle performance to be reduced in the form of lower MPG. To make
matters worse, the use of the Heater or A/C also contribute to lower MPG.
Unrealistic Climate
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The testing procedures utilize gentle acceleration, which does not represent the way people actually
drive anymore. For example, when merging onto a highway now, much more harsh acceleration is
required. The tests don’t reflect the MPG penalty that causes. So unless you acceleration as slowly
as when the test was performed, efficiency will be lower.
Gentle Acceleration
Fuel Type
EPA testing is done using 100% gasoline, which is the most efficient fuel available for a Prius to
run on. Those owners using the cleaner fuel alternative called "E10", which is a 10% ethanol and
90% gasoline blend, have a clear disadvantage. That blend is approximated 3.4% less efficient. In
simple terms, that means achieving 50 MPG using E10 could actually achieve 51.7 MPG using
100% gasoline instead.
actually performed, notice how results can be quite a bit lower if you live in the north or if you
drive fast:
Testing Procedures
The fuel economy estimates are based on results of tests required by the U.S.
Environmental Protection Agency (EPA). These tests are used to certify that
vehicles meet the Federal emissions and fuel economy standards. Manufacturers
test pre-production prototypes of the new vehicle models and submit the test results
to EPA. EPA re-tests about 10% of the tested vehicles to confirm manufacturer's
results in EPA's lab. The vehicles are driven by a professional driver under
controlled laboratory conditions, on an instrument similar to a treadmill. These
procedures ensure that each vehicle is tested under identical conditions; therefore,
the results can be compared with confidence.
There are two different fuel economy estimates for each vehicle in the Fuel
Economy Guide, one for city driving and one for highway driving. To generate these
two estimates, separate tests are used to represent typical everyday driving in a city
and in a rural setting. Two kinds of engine starts are used: the cold start, which is
similar to starting a car in the morning after it has been parked all night; and the hot
start, similar to restarting a vehicle after it has been warmed up, driven, and
stopped for a short time.
The test used to determine the city fuel economy estimate simulates an 11-mile,
stop-and-go trip with an average speed of 20 miles per hour (mph). The trip takes
31 minutes and has 23 stops. About 18 percent of the time is spent idling, as in
waiting at traffic lights or in rush hour traffic. The maximum speed is 56 mph. The
engine is initially started after being parked overnight. Vehicles are tested at 68 F to
86 F ambient temperature.
The test to determine the highway fuel economy estimate represents a mixture of
"non-city" driving. Segments corresponding to different kinds of rural roads and
interstate highways are included. The test simulates a 10-mile trip and averages 48
mph. The maximum speed is 60 mph. The test is run with the engine warmed up
and has little idling time and no stops (except at the end of the test).
NOTE: To make the numbers in the Fuel Economy Guide more useful for consumers,
EPA adjusts these laboratory test results to account for the difference between
controlled laboratory conditions and actual driving on the road. The laboratory fuel
economy results are adjusted downward to arrive at the estimates in the Fuel
Economy Guide and on the labels seen on new cars, light trucks, and vans. The city
estimate is lowered by 10% and the highway estimate by 22% from the laboratory test
results. Experience has proven that these adjustments make the mileage estimates in
the Fuel Economy Guide correspond more closely to the actual fuel economy realized
by the average driver.
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Seasonal Cycles
Seasonal cycles affect all types of vehicles, not just hybrid. But with Prius, you are much more
aware of the MPG changes due to having a Multi-Display constantly informing you of efficiency
performance. With traditional vehicles, owners typically are not aware how much of an affect
climate has on their vehicle’s performance. They just assume MPG remains relatively constant
throughout the entire year. In reality, that isn’t even remotely correct. Large fluctuations are
perfectly normal.
Vehicle Types
The difference between the warm & cold months is a significant change in MPG. In the winter…
The engine takes longer to warm-up, and the engine is needed to operate the heater. Both cause
more fuel to be consumed. The density of cold air is thicker, making it hard to push through. This
reduces efficiency. In the summer… Running the A/C to keep you cool requires electricity from
the battery-pack. That electricity is ultimately derived from the engine, which consumes fuel to
accomplish that. So, the more you use the A/C, the lower MPG will be.
Temperature
shows the effect of 4 separate Winters & Summers with a 2001 & 2004 Prius in Minnesota:
It is common for people to forget how much traffic patterns change during the winter. Slippery
roads cause major delays, increasing driving time significantly. So even with the benefit of the
hybrid system, there is still a very real plenty for getting stuck in that traffic heavy traffic.
Traffic
Heater
A/C
Heat to keep you warm in the winter comes from the engine. Hot coolant is circulated through the
heater-core as long is possible to continue heating the air. But eventually, it cools. At that point,
the engine must restart to warm the coolant again.
The A/C system in Prius is powered by an electric pump, not a pump powered by a belt connected
to the engine. That means in can run for a modest amount of time exclusively using only the
battery-pack, providing a significant efficiency benefit during the summer.
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Emissions
Prius
Prius (HSD model) has earned a CARB emission rating of: AT-PZEV
Just because a vehicle is labeled as a "Hybrid", that does not mean the vehicle is actually any
cleaner. In fact, some hybrids emit the same amount of smog-related pollution as a common
traditional vehicle.
Categories
CARB (California Air Resources Board) defines the following categories to help you identify how
LEV (Low Emission Vehicle)
The least stringent emission standard for all new cars sold in California beyond 2004.
ULEV (Ultra Low Emission Vehicle)
50% cleaner than the average new 2003 model year vehicle.
SULEV (Super Ultra Low Emission Vehicle)
90% cleaner than the average new 2003 model year vehicle.
PZEV (Partial Zero Emission Vehicle):
Meets SULEV tailpipe emission standards, has a 15-year / 150,000 mile warranty,
and has zero evaporative emissions.
AT-PZEV (Advanced Technology PZEV):
Meets SULEV tailpipe emission standards, has a 15-year / 150,000 mile warranty,
has zero evaporative emissions and includes advanced technology components.
ZEV (Zero Emission Vehicle):
Zero tailpipe emissions, and 98% cleaner than the average new 2003 model year vehicle.
California LEV II Emission Standards for Passenger Cars and Light Duty vehicles less than
8,500 lbs. (grams/mile for 120,000 miles/11 years) as measured by tailpipe emissions:
Measurements
Rating
LEV
NMOG
0.090
0.055
0.010
0.010
CO
4.2
2.1
1.0
1.0
NOx
0.07
0.07
0.02
0.02
PM
HCHO
0.018
0.011
0.004
0.004
0.01
0.01
0.01
0.01
ULEV
SULEV
PZEV
NMOG = non-methane organic gases
CO = carbon monoxide
NOx = nitrous oxides
PM = particulate matter
HCHO = formaldehyde
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NURTURING
Filling the Gas Tank
It is best to use the slowest setting (the farthest latch on the pump-handle); otherwise, the pump
could shut off prematurely giving you an inaccurate indication of "full".
Fill Speed
Don't! Once the pump automatically stops, don't trying squeezing any more gas into the tank.
The bladder will stretch, but it may spit gas back out if you force too much.
Topping Off
Also, pumping too much gas into the tank will result in gas filling up the vapor-capture canister.
That defeats part of the emissions system. So if you want your Prius to remove the cleanest
possible, avoid ever doing this.
Prius was designed to run with 87 Octane gasoline (85 in high altitudes). Several owners have
experimented with 90 & 93 Octane; however, there wasn't any improvement to MPG. Since engine
knocking is non-existent with Prius, there's no benefit in that respect either. Additionally, higher
octane may trigger an emission sensor alert. Therefore, save some money by using 87 Octane.
87 Octane Gas
Low-Sulfur Gas
10% Ethanol
Empty
Without the loss of performance or power, low sulfur gasoline helps to reduce emissions by
preventing efficiency loss within the catalytic-converter (a pollution control device) due to sulfur
build up. This also extends the life of the emission components. All gasoline sold in the United
States is mandated to be low-sulfur by January 2006.
90% Gasoline mixed with 10% Ethanol, better known as E10, will not harm any part of the Prius
fuel or emission system. Owners in the metro area of Minnesota, where E10 is required by law,
have used this type of fuel in their Prius for many years without experiencing any problems at all.
So there is no need for concern.
Don't ever run out of gas!
Not having the engine available makes driving a Prius using just electricity very risky. Without
gasoline it is very easy to push the motor & battery-pack beyond the tolerances they were designed
to operate. The motor is never supposed to exceed 42 MPH (68 km/h) all by itself and the battery-
pack is never supposed to be fully depleted. Also, without gas there's no way to prevent certain
mechanical & electrical components from overheating. Since Prius can go quite a bit further
between fill-ups than most vehicles, there's really no reason you should ever run out of gas anyway.
But if you do, drive very slowly and just enough to get out of harm's way.
When there is less than half a tank of gas remaining, the gas gauge is less accurate due to the
flexible nature of the bladder within. A helpful measurement alternative is to base refill timing on
the mileage you drive. Just reset one of the three odometers (A, B, or the one on the multi-display)
every time you get gas.
Another Gauge
450 miles (725 km) in the summer and 400 miles (644 km) in the winter is a good distance to start
with. You'll quickly figure out what works well for your particular needs.
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Inside the gas tank is a flexible bladder. It contracts and expands to fill the empty void that would
otherwise be filled with vapor as gasoline is consumed. The reduction of vapor emissions helps to
keep Prius extraordinarily clean.
Emission Bladder
Overfilling should be avoided, since adding gas after the pump automatically stops can create
pressure within the bladder. This could cause gas to be expelled afterward. So just don't top off.
Capacity reduces during the winter since cold temperatures cause the bladder to contract, up to 1.5
gallons (5.7 liters) in extreme conditions (below 0F / -18C degrees). That means you'll have to fill
up sooner. But when temperatures are that dangerously low, you should really fill up at the
halfway point anyway.
Twist the cap until it clicks. If it is not tightly secured, you may trigger an alert from the emission
sensor. After all, Prius wouldn't be so clean if vapor were allowed to leak out. In the event of an
alert, turn off the Prius and tighten the cap. Normal status should return after you restart.
Gas Cap & Door
Tuck the tether holding the cap to the car into the interior. Simply allowing it to be pushed by the
door may cause a tangle making the door hard to open later.
Lubricate the hinge. After extended exposure to dust, sand, and salt, the spring may struggle to
open the door due to the hinge being dry.
Adjust the latch. It’s possible to accidentally bend it. Too much can make the door difficult to
open. You may need to straighten it.
Multi-Display Care
The best way to remove fingerprints from the touch-screen is actually simpler that some owners
realize. You don't need a special solvent or material. Just a plain old soft cotton fabric, like a well
worn t-shirt or handkerchief. That’s it! But if must use a liquid too, try purified drinking water.
Cleaning
Also, make sure to only clean when the Multi-Display is off (or even better, the Prius itself is off).
This will make the fingerprints easy to see and will prevent the "Reset" button from accidentally
being pushed.
Long-Term Storage
Nothing is needed, at room temperature. The engine should startup just fine. Be aware that this
duration can be shortened by the age of the auxiliary-battery and the extreme cold.
Less than 3 Weeks
If you have SS/SE, press the button underneath the steering-wheel to disable it. The proximity
detector actually only causes a continuous draw from that 12-volt auxiliary battery for the first 10
days of storage, then it automatically disables itself. But it is better to just do it yourself
immediately.
More than 3 Weeks
If you have an alarm system, it is best to manually disconnect the 12-volt auxiliary battery
passenger side in the hatch area. With it disconnected, that continuous drain will be eliminated.
(Make note of the radio buttons you have programmed, since you'll need to manually restore them
after reconnecting the 12-volt auxiliary battery.)
Draining the 201.6-volt battery-pack while in long-term storage is never a concern. When you shut
off the Prius, an electric-relay automatically deactivates to cut the connection to the hybrid system.
So it isn’t even connected to the rest of the system until you turn the key again.
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Polishing
"Nu Finish" has worked well. The great polished look lasts for about 6 months, enough to get
through an entire winter. But when you wipe the dried residue off, it actually leaves lightly faded
streaks at first. Don't let that deter you. It disappears, leaving a protective layer after a few days.
Owner Tests
Tire Care
To prevent accelerated wear and maximize miles before replacement, follow these suggestions:
At the very least, check your tires monthly. Every two weeks is better. Pressure loss is normal and
Monthly Checking
especially rapid when temperatures drop. Uneven wear is an indication that either you’ve been
driving with tires below the minimum PSI or balancing/alignment is required. Also, don’t forget
about checking the spare tire in the trunk too.
Prius is a little heavier in front. To properly support that weight load, you must make sure the front
tires have 2 PSI more in them than the ones in the rear.
Front Bias
Turning
Never turn the wheels unless they're rolling. That causes unnecessary wear, just as with other
vehicles. The electric-steering is so powerful, you can't feel the friction caused by turning. But
your tires can. So, make sure the wheels are moving before you turn them.
Every 5,000 to 7,500 miles (8,000 to 12,000 km) the tires should be rotated, for best lifetime
performance. Rotation should be in a "roll-back, cross-forward" pattern. (That's front tires to the
rear without switching sides, and rear tires to front switching sides.)
Rotation
When initially tightening the lug nuts after having put a wheel back on and when you retorque them
after having driven around 100 miles, make certain the pressure you use is 76 ft-lb (103Nm).
Lug Nuts
0.05 DEGREES of Toe IN each side, for a total of 0.10 DEGREES.
Alignment
If steering feels like it wanders at high speeds, it's probably because the alignment isn't adjusted
correctly. Remember, "within factory-specified tolerance" is an answer you don't have to accept
from a service provider; you can insist that alignment be adjusted to this "exact" setting.
35/33 PSI (2.4/2.3 bar) is the PSI for the Prius tires (noted on the driver's door-jam of the car itself).
PSI minimum
42/40 PSI (2.9/2.8 bar) is what many Prius owners recommend for optimum performance. For
maximum performance, use a pressure of 44 PSI (3.0 bar). Whatever you decide, just remember
that low pressure results in lower MPG drop and a shorter tire life.
Note 1: Measuring PSI should always be done when the tires are cold, since driving heats up tires
making the results inaccurate due to the air inside expanding (which creates a false impression of
higher pressure).
Note 2: For every 10 F degrees colder, pressure will automatically drop 1 PSI. The reverse is true
too. So in the Spring, carefully monitor pressure to ensure it doesn't exceed the maximum as the
temperature increases.
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Tire pressure needs to be routinely checked (for all vehicles, not just Prius). Temperature drops
cause PSI to decrease. Heat caused by driving increases PSI, making measurements inaccurate
until cool. MPG & Safety are directly dependent on properly maintained PSI. Prius owners have
found a way to make this simple: use a cordless inflator.
PSI convenience
Cordless inflators cost about $40 (as shown below, right). They are small & powerful, allowing
you to increase PSI in the convenience & comfort of your own garage when the tires are still cool.
As an added bonus, the battery in the cordless inflator can be used as a portable12-volt power-
supply to plug your automotive accessories into. Some even offer additional features, like a built-
in light and even the ability to jump-start a vehicle.
Make sure to purchase a high-quality tire-gauge. For about $30 (as show above, left), you’ll find
that it is both easier to hold and easier to read than a less expensive one. That price will also
deliver a 0.5 PSI accuracy that you can depend on for many years and a tough case to protect it.
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Upgrade Tires
HSD Prius comes with standard, run-of-the-mill tires. In other words, they are fairly typical. So some owners are pleased with them
and others choose to upgrade.
DISCLAIMER: The ideas, suggestions, and opinions offered here have not been endorsed by the manufacturer of those specific components or Toyota Motor
Corporation. Any harm or damage that may result from the application of or the following of any ideas, suggestions, or opinions contained in this document is the sole
responsibility of the individual that applied or followed said ideas, suggestions or opinions. The authors of this document hereby declare that they cannot and will not
be held liable, in any fashion, for the content or the use of this information.
PSI
HSD Prius is average weight, exactly what you'd expect a vehicle that size to weigh. It does not
need special tires, since there is nothing extra to support. (In other words, XL rated tires are not
required.)
Like with many vehicles, a minimum of 35 PSI (2.4 bar) is required for tire-pressure. Less than
that will cause premature wear.
42/40 PSI (2.9/2.8 bar) is what many Prius owners recommend, since it increases the handling
abilities and allows the tread to last its longest. (That's 42 front & 40 back, since a 2 PSI bias is
required for the front tires.) The standard tires, as well as many other tires, support a maximum
cold pressure of 44 PSI (3.0 bar). So using 42/40 is no big deal. In fact, some owners even use
44/42 PSI (3.0/2.9 bar).
HSD Prius comes with standard tires. There are not LRR (Low Rolling Resistance), as many
people believe. If you desire, you may switch to LRR tires. That will maximize MPG, offering a
minor improvement over most standard tires.
LRR
Treadwear
460 is the treadwear rating for the standard HSD Prius tires. That's what many typical family
vehicle tires come with. 800 is what you'll find on the ultra-long-life tires. So there is an obvious
upgrade opportunity, if you want a set tires to last as long as possible.
The rating number represents the wear resistance of the tire. It does not correlate directly with the
amount of mileage you'll be able to drive. Don't rely exclusively on this value when selecting a
tire. Check the warranty, it will usually state an approximate distance expectation.
Revs
Size
Revs (Revolutions per Mile) indicate the precise "rolling" size of the tire. This measurement is
needed since not all tires with the same specification are actually the same.
855 is the Revs value for the standard HSD Prius tires. When selecting an alternate, a number very
close to that is required to insure the speedometer and odometer remain accurate. (Being off by a
small amount is acceptable since that value will change as tread wears down anyway.)
185 / 65 R15 is the standard size tire for HSD Prius. You'll find a wide variety of choices available
for this size.
Wider sizes may also be used. But keep in mind that larger widths will reduce your traction on
snow. A normal tire is better for digging through down to the road itself.
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Original Tire
Goodyear Integrity
HSD Prius comes with these tires standard. They are sometimes referred to as OEM (Original
Equipment Manufacturer) tires.
185 / 65 R15
44 PSI (3.0 bar) maximum
1168 lbs. (530 kg) load maximum
Standard Rolling Resistance
855 Revs per mile
10/32 inch Tread-Depth
86S Speed & Load Rating
"A" Traction
"B" Temperature
460 Treadwear
50,000 (80,467 km) Mile Warranty
Upgrade Tire
Michelin HydroEdge
These are premium-grade, high-traction tires that can be used on a HSD Prius.
185 / 65 R15
44 PSI (3.0 bar) maximum
1168 lbs. (530 kg) load maximum
Standard Rolling Resistance
856 Revs per mile
11/32 inch Tread-Depth
86T Speed & Load Rating
"A" Traction
"B" Temperature
800 Treadwear
90,000 (144,841km) Mile Warranty
Personal experiences with these tires are documented here... http://john1701a.com/prius/prius-maintain03.htm#Tires
Upgrade Tire
Goodyear TripleTred
These are premium-grade, high-traction tires that can be used on a HSD Prius. (Unfortunately,
they are not available in the standard size. So you have to use an alternate instead.)
190 / 60 R 15
44 PSI (3.0 bar) maximum
1190 lbs. (540 kg) load maximum
Standard Rolling Resistance
863 Revs per mile
11/32 inch Tread-Depth
86H Speed & Load Rating
"A" Traction
"B" Temperature
740 Treadwear
80,000 (128,748 km) Mile Warranty
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Upgrade Tire
Michelin Harmony
185 / 65 R15
44 PSI (3.0 bar) maximum
1168 lbs. (530 kg) load maximum
Standard Rolling Resistance
848 Revs per mile
11/32 inch Tread-Depth
86S Speed & Load Rating
"A" Traction
"B" Temperature
740 Treadwear
80,000 (128,748 km) Mile Warranty
Upgrade Tire
Goodyear ComforTred
185 / 65 R15
44 PSI (3.0 bar) maximum
1168 lbs. (530 kg) load maximum
Standard Rolling Resistance
855 Revs per mile
11/32 inch Tread-Depth
86T Speed & Load Rating
"A" Traction
"B" Temperature
700 Treadwear
80,000 (128,748 km) Mile Warranty
Washing
Removing the antenna is easy; just unscrew it (counter-clockwise). Then you don't have to worry
about it while going through an automatic car wash.
Antenna
Valet Use
Providing the valet with a "Valet Card" Toyota includes with the purchase of a new Prius is highly
recommended. It illustrates how to start the hybrid system in very simple steps.
Valet Card
Stealth can confuse valet drivers, since they expect noise & vibration rather than dead silence.
Keeping the engine running could prevent a mishap. Valets may repeatedly try to start the Prius not
realizing it's already running. Or worse, they may get out while the Prius is still in "D" (Drive)
because they think it’s off. To minimize this risk, set the defroster to the maximum cold or hot
setting. This forces the engine to continue running.
Engine On
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MAINTENANCE
Oil Changes
Refer to the "Increasing MPG "section.
Oil
5,000 miles (8,000 km) or 6 months, whichever comes first.
5,000 Miles or
6 Months
Having the engine shut off frequently and not using it as the sole propulsion source will allow oil to
last longer than in traditional vehicles. It simply isn't exposed to the strenuous engine conditions
found with. Nonetheless, it is still important to routinely change the oil & oil-filter.
After 4,500 miles (7,250 km), an indicator light will flash for 12 seconds after starting, then it will
turn off.
Reminder Light
After 5,000 miles (8,000 km), an indicator light will flash for 12 seconds after starting, then it will
change to a steady glow and remain on.
If you change the oil (and filter) yourself, here's how to reset the light so it will stay off until the
next change is interval has expired:
1) With the power on, switch to the odometer/trip-meter to display "ODO".
2) Power OFF (push the "Power" button).
3) Power ON, while holding the button for "ODO".
4) Wait for the reminder light to stop flashing, then release.
While the reset is taking place, you'll see the odometer value change to 5 dashes. Then
each will be disappear, one at a time from the left. When finished, 7 zeroes will briefly
appear, indicating the process is complete before the previous odometer mileage returns.
Oil Filter Toyota Part: 90915 - YZZF2
Illustrated Document
or: 90915 - YZZA2
Plug Gasket
Toyota Part: 90430 - 12028
That link above is for an illustrated document, which
provides details about the oil-change process for a
Prius. Download a copy to see the underneath of the
vehicle along with the along with the components
involved and the equipment you'll need to perform an
oil-change yourself.
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This is an unfortunate reality that far too much owners have to face. Oil pumped from bulk barrels
into your engine is commonly not carefully measured by dealers and quick oil-change places. So
make sure to check the level yourself after the service is complete. If the oil-level is beyond "full",
insist that they remove the excess.
Overfilling
The ideal level is 1/4” (one-quarter inch or 6 millimeters) below the "full" mark, which is between
the D and the E on the photo above.
Too much oil causes MPG to be reduced. Way too much oil causes damage to the engine. So it is
in your best interest to make sure the oil-level never goes above the "full" marker on the dipstick.
3.9 quarts (3.7 liters) is the maximum capacity, so there is no need to ever use that much. Never
pour in more than 3.5 quarts (3.3 liters). Even less is better. It's easy to add more afterward.
Removing too much is very, very difficult.
A simple way to avoid overfilling problems is to provide your own oil (which is common for those
preferring synthetic anyway) instead. They'll just deduct the price difference from your bill. Only
supplying the mechanic with the correct amount will guarantee they won't overfill.
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Window Wipers
Front Blades
Replacing the two wiper blades (every 30,000 to 35,000 miles) in the front is surprisingly easy.
You don’t even have to remove the wiper assembly from the car (though you can, if you want).
Just carefully squeeze the rubber at the far left (shown above) and pull inward a little bit. It will
bend just enough to allow you to slide it out of the clamp (shown below). With that unsecured,
the remainder of the wiper blade can be removed entirely just by pulling on it lightly, since none
of the other clamps lock it in place.
http://john1701a.com/prius/prius-wiperblades.htm ...provides details (and more photos) of the
replacement process for both the front & reap wiper blades.
Front Driver Wiper (Toyota Part: 85124 - 46010)
Front Passenger Wiper (Toyota Part: 85124 - 47010)
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To pivot the wiper arm upward, all you have to do is remove the clamp. It is the 2.5 inch (6 cm)
piece of flexible plastic at the base, where it connects to the window. Just pull both sides out and
slide it toward you. With that plastic off, the access to the blade is now possible. You can lift the
arm up to get at the underside of it.
Rear Blade
This photo shows that plastic clamp removed (the black object in the lower-right corner) and the
arm of the rear wiper lifted up.
Rear Hatch Wiper (Toyota Part: 85124 - 44140)
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Air-Conditioning
There is a hepa filter for the Air-Conditioning system behind the glove-box:
Filter Access
Open the bottom glove-box, and then remove all the contents (since they will end up falling out all
over the floor otherwise).
To the right of glove-box is an attached small plastic hydraulic arm (to add a resistance feel). Pull
on that arm so it separates itself from the glove-box. Then hold onto the left and right sides of the
glove-box while squeezing inwards. This will allow you to pull the glove-box downward, beyond
the usual stopping point. Having accomplished that, you may let go. Just let it hang there, like this:
The air-flow assembling will then be completely visible and very easy to access. You’ll see the
filter at the top, lying horizontal along the entire width of that white plastic air-duct. Just pull on
both sides to slide it out. Then you can easily inspect it and replace it (when needed).
For detail and more illustrations, refer to http://john1701a.com/prius/prius-airconditioner-filter.htm
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OPTIONS
(SE) Smart-Entry
It is proximity detection system that automatically senses a wireless transmitter (called a "key-fob") in your pocket or
purse, allowing you to unlock the doors & hatch without the need to use a physical key or push a button on a remote.
Reaching into the handle area on the outside of the Driver's door, you'll trigger the sensor to
unlock just that door.
Touchless Unlock
Reaching into the handle area on the outside of the Passenger's door, you'll trigger the sensor to
unlock all the doors.
Reaching into the handle area on the outside of the Hatch, you'll trigger the sensor to unlock the
all the doors as well as the hatch.
Leaving the key-fob inserted into the dashboard-slot for more than 10 minutes after power OFF
will cause the SE to be disabled. To enable it again, press the button under the steering-wheel.
Automatic Disable
That small key inside the key-fob can be removed and used to open the driver's door manually,
Key-Fob Battery
when the battery wears out due to excessive age. The battery isn't necessary to start the Prius when
the key-fob is inserted into the dashboard slot; though, you will want to eventually replace the
battery (CR2032).
On both front door handles and the hatch in back, there are small black buttons. Pushing one of
Outside Locking
them will trigger a beep and flash the lights to inform you the SE/SS system has just locked the
Prius. This ability prevents the need for you to ever touch the SE/SS device in your pocket or
purse… unless you need to use the "panic" button on the back (which honks the horn and flashes
the lights).
(SS) Smart-Start
It is proximity detection system that automatically senses a wireless transmitter (called a "key-fob") in your pocket or
purse, allowing you to start the hybrid system without the need to use a physical key or push a button on a remote.
When the key-fob battery wears out due to excessive age, you can still start the hybrid system
without replacing the battery (CR2032). Just insert the key-fob into the dashboard-slot manually.
It will get sensed that way, even though the remote ability is not available.
Key-Fob Battery
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Homelink
It is a set of buttons on the rear-view mirror available for custom programming, to supplement your other remotes.
To program a Homelink button on your mirror to open & close your garage-door, do the following:
Garage Door
1) If the mirror is off, turn it on. (The indicator light will be a steady green.)
2) Press the desired programmable-button (the left most three) on the mirror and continue
holding it depressed throughout the entire programming process.
3) With the garage-door remote held close to the mirror, press the button on it repeatedly.
4) When the indicator light on the mirror changes to a rapid blinking red, stop pressing both
the buttons on the mirror and the opener. Programming is complete.
5) Test the newly programmed Homelink button. Pressing it for 1 second will change the
indicator light from a steady green to a steady red, which will instruct your garage door to
open or close just like your garage-door remote.
Note: this programming is only available for remotes with non-rolling security codes.
*
Bluetooth
Phone Type
Here's a sampling of the original Bluetooth-enabled cell-phones stated to work with Prius...
Motorola: V505, V551, V600, V710, RAZR
Nokia: N-Gage, 3600, 3620, 3650, 3660, 6230, 6310i, 6600, 6620, 6820, 7610
Siemens: S56, S66
Sony Ericsson: T68i, T608, T610, T616, T637, Z600, SX1, S55, S56
Since the introduction of the HSD, many other cell-phones have been added to the Bluetooth list.
Check with your local provider for compatibility information. You may also find helpful facts on
Here's abbreviated instructions for setting up the T610:
Adding a Phone
1) On the Multi-Display, select "Telephone", "Settings", "Add Phone"
2) On the phone, select Turn On Bluetooth", "Connectivity", "Bluetooth", "My Devices",
"New Device", "Unknown"
3) Enter the password/passkey "1212" when prompted.
4) On the phone, select "OK", "Unknown", "Connect"
More Info
Currently, detailed illustrated instructions for the T610 connection setup are available.
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Navigation
Increases the volume of the Navigation System's guidance information when going over 50 MPH
(80 km/h).
Adaptive Volume
When you get to a common destination or one that was particularly difficult to find, take advantage
of the "Mark" button on the Multi-Display (only visible when you have the extended menu shown).
That will add it to the "Memory Points" menu. Up to 106 locations can be stored, so take
advantage of this to make future navigation destination selection easier.
Mark Button
Voice-Recognition
There is no training process for all the commands. The voice-recognition is remarkably adept the
way it comes installed, so you can use it immediately.
No Training
Electrochromic Mirror
Some owners have discovered that the automatic dimming mirror doesn’t get dark enough for them
Making it Darker
at night. The solution to this high-tech problem is a surprisingly low-tech modification. All you
have to do is trick the mirror into thinking it is darker outside by just covering the optical-sensor on
the back with a piece of transparent plastic. That way, less light is detected. The response is a
deeper shade of green, which makes the headlights behind you appear less intense.
This photo shows how the optical-sensor has been covered by a piece of blue transparent plastic,
attached to the mirror using a piece of clear adhesive tape.
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VOICE-RECOGNITION
Help
Command Help
Command List
Help
Navigation - Commands
I'm Hungry
Add to Destination
Change to Arrow Guidance
Change to Arrow Guide
Change to Compass Mode
Change to Dual Map
Change to Freeway Guidance
Change to Freeway Guide
Change to Heading Up
Change to Intersection Guidance
Change to Intersection Guide
Change to Lane Guidance
Change to Map Direction
Change to North Up
Cancel All Destinations
Cancel Final Destination
Cancel Next Destination
Delete All Destinations
Delete Final Destination
Delete Next Destination
Enter Destination
POI Off
Route Overview
Compass Mode
Heading Up
North Up
Previous Destination
Replace Destination
Louder
Softer
Arrow Guidance
Arrow Guide
Change to Single Map
Freeway Guidance
Freeway Guide
Change to Turn List Guidance
Change to Turn List Guide
Repeat
Repeat Voice
Guidance Screen on Freeway
Intersection Guidance
Intersection Guide
Lane Guidance
Go to Previous Destination
Go to Quick Access 1
Go to Quick Access 2
Cancel
No
Yes
Repeat Guidance
Resume Guidance
Start Guidance
Go to Quick Access 3
Go to Quick Access 4
Go to Quick Access 5
Short
Stop Guidance
Go to Quick Access Number 1
Go to Quick Access Number 2
Go to Quick Access Number 3
Go to Quick Access Number 4
Go to Quick Access Number 5
Go to Start Point
Mark
Mark This Point
Suspend Guidance
Turn List Guidance
Turn List Guide
Zoom In
Zoom Out
Dual Map
Entire Route
Go to Starting Point
Lexus Dealer
Lexus Dealership
Toyota Dealer
Entire Route Map
Fifth Destination Map
Final Destination Map
First Destination Map
Fourth Destination Map
Map
Quick
Quick 1
Quick 2
Toyota Dealership
Quick Access 1
Quick Access 2
Quick Access 3
Quick Access 4
Quick Access 5
Quick Access Number 1
Quick Access Number 2
Quick Access Number 3
Quick Access Number 4
Quick Access Number 5
Previous Start Point
Previous Starting Point
Map Direction
Next Destination Map
Second Destination Map
Single Map
Right Map Direction
Right Map Heading Up
Right Map North Up
Right Map Zoom In
Right Map Zoom Out
Third Destination Map
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Navigation - Locations
Airport
Fast Food
Ferry Terminal
Fitness Club
French Food
French Restaurant
Gas
Gas Station
Go Home
Golf
Golf Course
Government Offices
Grocery Store
Health and Fitness Club
Higher Education
Historical Monument
Home
Other Retail
Other Retail Stores
Park
Park and Recreation
Parking
Parking Garage
Parking Lot
Performing Arts
Pharmacy
Police Station
Post Office
Rental Car
Rental Car Agency
Rest Area
Rest Stop
Restaurant
American Food
American Restaurant
Amusement Park
ATM
Auto Club
Auto Service
Auto Service and Maintenance
Automobile Club
Bank
Barber Shops
Beauty and Barber Shops
Botanical Garden
Bus Station
Business Facility
Campground
Car Wash
Casino
Chinese Food
Chinese Restaurant
Cinema
City Center
City Hall
Civic Center
Coffee House
College
Community Center
Commuter Rail Station
Continental Food
Continental Restaurant
Convenience Store
Convention Center
Court House
Current Location
Current Position
Department Store
Detour
Home and Garden
Horse Racing
Hospital
Hotel
Ice Cream Parlor
Italian Food
Italian Restaurant
Japanese Food
Japanese Restaurant
Library
School
Seafood
Seafood Restaurant
Service and Maintenance
Shopping
Shopping Mall
Ski Resort
Skiing
Specialty Food
Specialty Food Store
Speedway
Sports Complex
Stadium
Thai
Theater
Tourist Attraction
Tourist Information
Train Station
Triple A
Marina
Mexican Food
Mexican Restaurant
Museum
National and State Parks
National Parks
Other Automotive
Other Automotive Stores
Other Business
Other Business Facilities
Other Financial
Other Financial Services
Other Food
University
Video Rental
Winery
Detour Entire Route
Dry Cleaning
Zoo
Exhibition Center
Other Restaurant
Zoological Garden
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Audio
Audio
CD
SAT
Audio On
Audio Off
CD Changer
Disc Down
Disc Up
SAT1
SAT2
SAT3
Radio
AM
AM Radio
FM
FM Radio
FM1
Next Disc
Satellite Radio
Satellite Radio 1
Satellite Radio 2
Satellite Radio 3
Type Down
Type Up
Next Track
Previous Disc
Previous Track
Skip Backward
Track Down
Track Up
FM2
Program
Seek Down
Seek Up
Cassette
Tape
Fast Forward
Play
Reverse
Rewind
Climate
Automatic Air-Conditioning
Automatic Air-Conditioning Off
Automatic Air-Conditioning On
Temperature 65 Degrees
Temperature 66 Degrees
Temperature 67 Degrees
Temperature 68 Degrees
Temperature 69 Degrees
Temperature 70 Degrees
Temperature 71 Degrees
Temperature 72 Degrees
Temperature 73 Degrees
Temperature 74 Degrees
Temperature 75 Degrees
Temperature 76 Degrees
Temperature 77 Degrees
Temperature 78 Degrees
Temperature 79 Degrees
Temperature 80 Degrees
Temperature 81 Degrees
Temperature 82 Degrees
Temperature 83 Degrees
Temperature 84 Degrees
Temperature 85 Degrees
65 Degrees
66 Degrees
67 Degrees
68 Degrees
69 Degrees
70 Degrees
71 Degrees
72 Degrees
73 Degrees
74 Degrees
75 Degrees
76 Degrees
77 Degrees
78 Degrees
79 Degrees
80 Degrees
81 Degrees
82 Degrees
83 Degrees
84 Degrees
85 Degrees
Cooler
Warmer
Lower Temperature
Raise Temperature
Screen
Screen Off
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OTHER
Battery-Pack
The power management system was designed to maximize battery life. It rigorously works to
always keep the charge-level at optimum, by never fully draining or fully recharging it. And you
can clearly see that by watching the indicator on the Multi-Display. Lab testing has demonstrated
that the battery-pack will last an equivalent of 180,000 miles of driving without any deterioration.
And the preliminary real-world data now available is confirming those findings. The battery-pack
is expected to last the lifetime of the vehicle. So with normal wear & tear, Prius owners should not
expect to ever have to replacement it.
Replacement
Toyota has had a recycling program in place for NiMH batteries ever since the electric version of
the RAV4 was introduced back in 1998. Every part of the battery, from the precious metals to the
plastic, plates, steel-case and the wiring, is recycled. To ensure that batteries come back to Toyota,
each battery has a phone number on it to call for recycling information and dealers are paid a $200
"bounty" for each pack collected.
Recycling
Rear Hatch
The hatch door is designed to be slammed shut. So if you find you are not getting it to shut tight,
don't feel afraid to use some muscle on it. Holding back isn't necessary. Grab the hand-hole (that
cavity within the plastic, on the right as you face it) then... Slam It! Damn It!
Slam It!
SE/SS won't unlock the hatch while the Prius is running. So to unlock the hatch, you need to press
the unlock button on the inside either of the front doors.
Unlock
The rollout "shade" that is used to cover the hatch (to conceal the contents, if any) uses plastic
grips that lock into place with the body of the car. Each grip attaches to the cover using 2 screws.
It is possible, after plenty of use, for a screw to come loose and eventually fall out. Don't let the
inconvenience occur. Be proactive by tightening them annually. Make that part of your spring-
cleaning routine.
Cargo Cover
There are 4 metal-rings, bolted to the frame of the vehicle, available for securing cargo. Each is
located in a corner of the hatch area. Use them in conjunction with bungee-cords or rope to keep
large or loose items from shifting while you drive. If you need addition locations when the back
seats are up, simply raising a headrest to reveal metal rods that can be used. When the back seats
are folded down, you may use the latch-loop that is normally used to secure the seat in place.
Securing Cargo
Cargo Nets
There are two types available. One lays flat (horizontal), connecting to each of the metal-rings.
You just slip cargo underneath it to keep the cargo in place. The other is upright (vertical),
connecting to the 2 metal-rings closest to the hatch and 2 connector-point which you add by
drilling a simple hole in a location close to the window. This type works well for cargo such as
grocery bags.
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From inside the hidden storage area underneath the floorboard, remove the tiny black panel on the
side closest to the hatch, and then poke your finger through that hole into the metal casing. There's
a smooth tiny metal latch there. (Toyota definitely wanted to make that inaccessible from outside.)
Pulling it up pops the hatch open.
Hidden Release
With the hidden storage area removed, the photo below shows the exact location of that metal latch,
as indicated by the yellow “V ” mark.
This close-up of the photo above makes the (brass colored) release latch easier to see.
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Side Mirrors
As with most all vehicles, Prius has a blind-spot immediately to the left-rear of the driver. The
solution to that is carefully aiming the mirror on the side. You can also add a blind-spot mirror
to it, the very same way as with other vehicles.
Blind-Spot
The photo above shows a blind-spot mirror installed, outside the driver-side door. (There’s just an
adhesive sticker on the back of it. So installation only takes a moment.) The upper-right corner is
the least intrusive location, since you won’t normally see a vehicle positioned there anyway.
It is recommended that you purchase two (one for each side of the car) made from high-quality
hard plastic. The cost is around $6 for a set of that nicer type. That makes it easier to see fine
detail and more resistant to water spots. In fact, you’ll find that the plastic stays cleaner in the
Winter than the glass of the big mirror.
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Transmission
"Planetary" is the type of CVT that Prius uses.
CVT Type
It has nothing in common with the other type of CVT currently available, called "Cone & Belt".
Technically, Prius really doesn’t have a transmission since nothing ever shifts. There are no gears.
There are only power-carriers. All they do is rotate, and they are permanently engaged.
Design
The physical components within the "Planetary" CVT bare a striking resemblance to those within a
differential (the power-transfer mechanism found on all vehicles). In fact, they even serve the same
purpose.
Operation
Due to the fact that the "Planetary" CVT is nearly identical to that of a differential, the expectation
is that it will last just as long too. So you can confidently predict it will last the entire lifetime of
the vehicle.
Lifetime
Information Sources
Information directly from Toyota itself is available here... http://www.toyota.com/prius
Toyota Website
Toyota Online
Toyota Manuals
Repair Manual access & downloading for $10 per day at... http://techinfo.toyota.com
Available via credit-card from 1-800-622-2033
•
•
•
•
•
2004 Prius Repair Manual, volume 1: RM1075U1
2004 Prius Repair Manual, volume 2: RM1075U2
2004 Prius Repair Manual, volume 3: RM1075U3
2004 Prius Electrical Wiring Diagram: WED555U
Prius New Car Features, 2004: NCF255U
Recent News
Here are two very information forum where you can participate in online discussions:
Enthusiast Forums
You’ll find a variety of Prius owner webpages with photos here:
Owner Webpages
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There are many. These are the main groups:
Yahoo Groups
Add it in front of the term you wish to search for. For example, to search for "synthetic oil" enter
the following text on Google's website: "Prius site:autos.groups.yahoo.com synthetic oil"
Yahoo Searching
Graham's website
john1701a's website
An owner’s website that thoroughly documents many aspects of the Prius.
This is a very large Prius owner website. As of 2/07/2005 the combined Classic & HSD Prius
content available consisted of: 619 webpages, 1362 digital photos, 1093 offline-pages of blogs,
47 animations, 42 wallpapers, 14 spreadsheets with graphs, 33 documents, and 6 screen-savers,
along with a few other Prius related items. There's also nature gallery with 151 photos.
Informational Materials
Info-Sheet
This is a document available for downloading that provides information in a 2-page
format that serves as a convenient means of introduction to all aspects of Prius.
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This is a document available for downloading
that provides information about energy flow
within the Prius hybrid system. Each of the
major components is identified and their
connection to each other is explained in an
easy to read summary.
Energy Flow
This is a document available for downloading
that provides information about the special
device within the Prius hybrid system which
entirely eliminates the need for a traditional
transmission. It is how the 2 electric motors
and gasoline engine are able to interact.
Power-Split-Device
This is a document available for downloading
that provides a much more in-depth look at
the PSD. Without getting too technical, the
illustrations describe the how the variety of
movements within the device relate to the
operation of the hybrid vehicle.
PSD (details)
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This is a document available for downloading
that provides information about the type of
hybrid known as "Full".
Type: FULL
This is a document available for downloading
that provides an illustration with more detail,
a supplement to the other "Full" document.
FULL (details)
FULL (operation)
This is a document available for downloading that provides information in a 3-page format that
serves as a convenient means of explaining how the hybrid system in Prius actually operates.
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This is a document available for downloading
that provides information about the type of
full hybrid known as "Two-Mode".
Type: TWO-MODE
This is a document available for downloading
that provides information about the type of
hybrid known as "Assist".
Type: ASSIST
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GLOSSARY
Anti-Lock Braking System
ABS
AC
All modes of conditioning air inside the passenger area of the vehicle: Heating, Cooling, Venting
Condensing of air to cool it and to remove humidity.
A/C
Hybrid system with a small battery-pack and a single small electric-motor that provides peak power for the
gasoline-engine during periods of acceleration.
Assist
Advanced Technology Partial Zero Emission Vehicle
AT-PZEV
"B" Gear
Engine Braking, (it isn't actually a gear) when you shift the transmission to this setting the engine will be used
to slow down the car, it works similar to an exhaust brake used on the large semi-trucks (except the one on
Prius is totally silent).
Celsius, a measure of temperature, (C * 1.8) + 32 = F, -25°C = -13°F, -15°C = 5°F, -5°C = 23°F,
0°C = 32°F, 5°C = 41°F, 20°C = 68°F, 25°C = 77°F, 30°C = 86°F
C
California Air Resources Board, an agency dictating emissions requirements for cars sold in California. (These
are often more strict than Federal standards.)
CARB
Catalytic Converter, a vital component in the emissions system
Cruise Control
CAT
CC
Coefficient of drag (0.29 for the Original & Classic Prius, 0.26 for the HSD Prius)
Check Engine Light
Cd
CEL
Classic
CVT
The term used to identify the 2001, 2002, 2003 model years of Prius.
Continuously Variable Transmission, in Prius is a "Planetary" design using a power-split device, other CVT
vehicles use a "Cone & Belt".
A very large, gas-guzzling, high-emission vehicle based on 20th century technology.
Daytime Running Lights
Dinosaur
DRL
Digital Versatile Disc, used for the Navigational system in Prius
DVD
Electronics Control Unit, the amazing computer that monitors and controls the two motor-generators, the gas
engine, the motion of the planetary gear set, the battery pack power levels etc. to provide the Prius' smooth
acceleration and speed control.
ECU
The common term used to refer to the power device which runs on gasoline.
Engine
EPA
Environmental Protection Agency, the group responsible for rating the emissions and gas mileage of vehicles
sold in the United States.
Electric Vehicle, powered exclusively by a battery-pack charged before use
EV
F
Fahrenheit, a measure of temperature, (F - 32) / 1.8 = C, -15°F = -26.11°C, 0°F = -17.78°C, 15°F = -9.44°C,
32°F = 0°C, 40°F = 4.44°C, 60°F = 15.56°C, 70°F = 21.11°C, 80°F = 26.67°C
Fuel Cell Hybrid Vehicle, a fuel-cell vehicle that takes advantage of hybrid technology including the use of a
battery-pack
FCHV
Fear, Uncertainty, Doubt
FUD
Full
Hybrid system with a large battery-pack, a small electric-motor, at least one large electric-motor, and a
gasoline-engine that combined provide a wide variety of combustion & electric propulsion abilities.
Global Positioning System, this is the part of the Prius Navigation System that identifies your exact location
GPS
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on Earth.
Hybrid Electric Vehicle
HEV
HID
HSD
High Intensity Discharge, bulbs used for headlights
Hybrid Synergy Drive - Toyota's modular hybrid design, currently implemented in the 2004, 2005, 2006 Prius
with many more vehicles planned to also use it.
High Occupancy Vehicle - used to describe the restricted "diamond" lanes on highways
Horsepower, indicating a unit of power, a measurement different from torque
Internal Combustion Engine
HOV
HP
ICE
Integrated Motor Assist - Honda's hybrid technology
IMA
Key-Fob
The device (introduced in 2004) used to unlock doors and start the hybrid system. By default, it works as a
wireless remote for unlocking and is inserted into a slot in the dashboard for starting. As an option, it can be
upgraded to control the Smart-Entry & Smart-Start feature. And note that there is actually a traditional key
within which can be used for unlocking the driver's door manually.
Kilometer, a measure of distance, 1 kilometer is equal to 0.6214 mile
Kilowatt, an electrical measurement unit used when describing Prius power consumption & storage
Low Emission Vehicle
km
kW
LEV
L/100km
LMPG
LRR
M
Liters per 100 kilometers
Lifetime Miles Per Gallon
Low Rolling Resistant - used to describe minimum friction tires
Mile, a measure of distance, 1 mile = 1.6093 kilometers
Multi-Display - the touch-sensitive liquid-crystal screen on the dashboard of Prius
MD
Motor Generator, an electric motor which can either provide motive power when electrically driven or generate
electricity when mechanically driven.
MG
This three-phase AC permanent-magnet synchronous motor/generator starts the ICE, controls the CVT, and
generates the electricity (by using thrust from the ICE) to charge the HEV battery.
MG1
MG2
This three-phase AC permanent-magnet synchronous motor/generator drives the wheels, and generates
electricity (from the regenerative braking, by recapturing the car's energy of motion) to charge the HEV battery.
The common term used to refer to the power device which runs on electricity.
Miles Per Gallon
Motor
MPG
Manufacturer's Suggested Retail Price
MSRP
MY2001
NAV
Model Year 2001 (which became available in the United States the summer of 2000)
DVD-based GPS Navigation System, used in Prius
Nickel-Metal Hydride, the type of modules used in the Prius battery-pack
Noise, Vibration, Harshness
NiMH
NVH
Original Equipment Manufacturer
OEM
Organization of the Petroleum Exporting Countries
The term used to identify the 1998, 1999, 2000 model years of Prius (which were only available in Japan).
OPEC
Original
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All that transpired before the Prius
Plug-In Hybrid Electric Vehicle
Priustoric
PHEV
PSD
Power-Split Device, the planetary gear set which divides power between the ICE and the two electric motor-
generators, also functions as the continuously-variable transmission.
Partial Zero Emission Vehicle. (A manufacturer must eliminate evaporative emissions and ensure that the
vehicle will run cleanly for its entire projected life. Even if the vehicle is just sitting in the driveway, it is still
polluting. The source of this pollution is hydrocarbons emitted from the gas tank as gasoline slowly
evaporates. To achieve PZEV certification, all evaporative emissions must be eliminated.)
PZEV
Research & Development
R&D
SE
Smart-Entry: It is proximity detection system that automatically senses a wireless transmitter (called a "key-
fob") in your pocket or purse, allowing you to unlock the doors & hatch without the need to use a physical key
or push a button on a remote.
Smart-Entry & Smart-Start
SE/SS
SOC
SS
State Of Charge - indicating the amount of stored electricity available in the battery-pack
Smart-Start: It is proximity detection system that automatically senses a wireless transmitter (called a "key-
fob") in your pocket or purse, allowing you to start the hybrid system without the need to use a physical key or
push a button on a remote.
Electric-Only driving (up to 42 MPH for Classic & HSD Prius) without the engine running.
Supplemental Restraint System, better known as Airbags
Stealth
SRS
Super Ultra Low Emission Vehicle (only a few vehicles qualify for this clean rating category, Prius is among
them)
SULEV
Toyota Hybrid System - Toyota's hybrid design for the Classic Prius
THS
Measurement value indicating wheel turning force, a strength value different from horsepower
Torque
TRAC
Toyota Rent-A-Car, a program by which some have shortened the waiting time: when the demo/rental units
reach a time/mileage it permits the dealer to sell them.
Driving a Prius with the battery-pack extremely drained of electricity, in conditions too hot (typically above
105 F degrees), or conditions too cold (typically below -10 F degrees), so that an orange "turtle" icon displays
near the speedometer. This warns the driver to avoid forceful acceleration.
Turtle
Ultra Low Emission Vehicle (as of the 2003 model-year there were 90 vehicle models in the United States that
met the rating criteria)
ULEV
V
Volt or Voltage, an electrical measurement unit used when describing attributes of Prius propulsion
components.
A term from the computer industry used to describe claims made by a company about a product that was never
delivered. It sounded great in concept, but for whatever reason was impractical in the end. In other words,
don't believe it until you actually see the product available for consumers to purchase.
Vaporware
Vehicle Stability Control, a safety feature that automatically engages side-specific braking for you when it
detects the vehicle wheels slip; stepping on the brake is not necessary for the feature to work
VSC
ZEV
Zero Emission Vehicle
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Prius Generations:
Original
Classic
HSD
Engine HP
58
70
76
Engine kW
43
52
57
Engine RPM Redline
4000
4500
5000
Motor HP
40
44
67
Motor kW
30
33
50
Motor Torque
225
258
295
0-60 MPH (seconds)
14.1
12.5
10.1
Tire Width
Tire Diameter
165
15
175
14
185
15
Battery-Pack Energy (W/kg)
Battery-Pack Voltage
Battery-Pack Weight (lbs)
Battery-Pack Section Type
Battery-Pack Section Count
600
288
125
D-Cell
40
900
273.6
110
Module
38
1250
201.6
99
Module
28
Hybrid-System Voltage
288
273.6
500
CLASSIC: Touch-Sensitive version of the Multi-Display was introduced.
HSD: Electric A/C was introduced. Multi-Display size was increased.
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