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4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 404
Cleaning and protecting  the vehicle interior............. 407
4-2. Maintenance Maintenance requirements ..................... 411
General maintenance.......... 414
Emission inspection and  maintenance (I/M) 
programs........................... 418
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 419
Hood ................................... 422
Positioning a floor jack ........ 425
Engine compartment ........... 428
12-volt battery ..................... 440
Tires .................................... 446
Tire inflation pressure ......... 457
Wheels ................................ 461
Electronic key battery.......... 464
Checking and replacing  fuses ................................. 466
Light bulbs........................... 478 5-1. Essential information
Emergency flashers............  494
If your vehicle needs to be towed.......................  495
If you think something is  wrong ...............................  502
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer 
sounds..............................  503
If a warning message is  displayed ..........................  517
If you have a flat tire ...........  537
If the hybrid system will  not start ............................  550
If you lose your keys...........  552
If the electronic key does  not operate properly .........  553
If the 12-volt battery is  discharged........................  555
If your vehicle overheats ....  561
If the vehicle becomes  stuck .................................  567
If your vehicle has  to be stopped in an 
emergency .......................  569
4Maintenance and care5When trouble arises 
     
        
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Fuel filler door P. 133
Rear turn signal lights 
P. 214
Rear window defoggers P. 352
Tires
●Rotation
● Replacement
● Inflation pressure
● Information
P. 446
P. 537
P. 581
P. 587
Rear side marker lights 
P. 253
Tail lights P. 253
Camera*Side doors P. 88
Back door P. 94
Rear window wiper P. 265
: If equipped
*: Refer to “DISPLAY AUDIO SYSTEM OWNER’S MANUAL” 
or “NAVIGATION SYSTEM OWNER’S MANUAL”.
License plate lights 
P. 253 
     
        
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Pictorial indexInstrument panel
Headlight switch
Turn signal lever
Fog light switch
P. 253
P. 214
P. 259
Pre-collision braking off switch P. 309
Parking brake pedal P. 215
Fuel filler door opener
P. 133Tire pressure warning reset switch P. 448
Windshield wipers and 
washer switch 
Rear window wiper and 
washer switch 
P. 261
P. 265
Gauges and meters 
Multi-information display P. 217
P. 226
Audio system*2 P. 353
Navigation system*1 
SRS driver airbag 
Horn 
P. 141
P. 216
SRS knee airbag P. 141
Tilt and telescopic steering control lever P. 118
: If equipped
*1: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL”.
*2: Refer to “DISPLAY AUDIO SYSTEM OWNER’S MANUAL”. 
     
        
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1-1. Hybrid system
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Before driving
PRIUS_OM_OM47A17U_DVD_(U)
■
Air conditioning on/off
Switch the air conditioning ( )  to off when it is not needed.
Doing so can help control excessive gasoline consumption.
In summer: In high temperatures, use the recirculated air mode.
Doing so will help to reduce t he burden on the air conditioner
and reduce fuel consumption as well.
In winter: Because the gasoline engine will not automatically cut
out until the gasoline engine and the interior of the vehicle are
warm, it will consume fuel. Also, fuel consumption can be
improved by avoiding overuse of the heater.
■ Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently.
Improper tire inflation pressure can cause poor  fuel consump-
tion.
Also, as snow tires can cause lar ge amounts of friction, their use
on dry roads can lead to poor fuel  consumption. Use a tire that is
appropriate for the season.
■ Luggage
Carrying heavy luggage can lead to poor fuel consumption.
Avoid carrying unnecessary luggage. Installing a large roof rack
can also cause poor fuel consumption.
■ Warming up before driving
Since the gasoline engine starts up and cuts out automatically
when cold, warming up the engine is unnecessary. Moreover,
frequently driving s hort distances will ca use the engine to
repeatedly warm up, which can lead to poor fuel consumption. 
     
        
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296 2-4. Using other driving systems
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■No-handed driving warning
If the steering wheel is not operated for approximately 15 seconds on a
straight road or approximately 5 seconds on a curve, the buzzer will beep
twice, indicators on the multi-information display will flash, and the lane
keeping assist function will be temporarily canceled. If you drive the vehicle
with your hands lightly touching the steering wheel, this may also be
detected as no-handed driving.
■ After the vehicle has been parked in the sun
The LKA system functions may not be available and a warning message
(P. 524) will be displayed for a while after driving has started. In such
cases, turn the LKA system off and turn it on again after normal temperature
returns. When the temperature in the cabin decreases and the temperature
around the camera sensor ( P. 290) becomes suitable for its operation, the
functions will begin to operate.
■ If there are lane markers on only one side of the vehicle
The lane keeping assist function will not operate. Also, the lane departure
warning will not operate for the side on which lane markers could not be rec-
ognized.
■ Conditions in which the func tion may not operate correctly
In the following conditions, the LKA system functions may not operate, or it
may not be possible to ensure adequate performance. Also, the camera
sensor may be unable to recognize lane lines causing the lane departure
warning function to operate incorrectly, or the lane keeping assist function
may not operate properly. However, this does not indicate a malfunction.
● When driving through an area with no lane markers, such as a tollbooth,
a crossing or before a ticket checkpoint
● When driving on a sharp curve
● When lanes are extremely narrow or extremely wide
● When the vehicle leans to one side an unusual amount due to a heavy
load or improper tire inflation pressure
● When the following distance between your vehicle and the vehicle ahead
is extremely short 
     
        
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2-4. Using other 
driving systems
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When driving
CAUTION
■Replacing tires
Make sure that all tires are of the specified size and of the same brand, tread
pattern and total load capacity. In addition, make sure that the tires are
inflated to the recommended tire inflation pressure level.
The ABS and VSC systems will not function correctly if different tires are
installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires or
wheels.
■ Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction. 
     
        
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326 2-5. Driving information
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■Tire chain installation
Observe the following precautions when installing and removing chains:
●Install and remove tire chains in a safe location. 
● Install tire chains on the front tires only. Do not install tire chains on the
rear tires.
● Install tire chains on front tires as tightly as possible. Retighten chains
after driving 1/4 - 1/2 mile (0.5 - 1.0 km).
● Install tire chains following the instructions provided with the tire chains. 
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents. 
Failure to do so may result in a loss of vehicle control and cause death or
serious injury.
●Use tires of the size specified.
● Maintain the recommended level of air pressure.
● Do not drive in excess of 75 mph (120 km/h), regardless of the type of
snow tires being used.
● Use snow tires on all, not just some wheels.
● Do not use LKA (Lane-Keeping Assist) system (if equipped). 
     
        
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2-5. Driving information
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When driving
CAUTION
■
Driving with tire chains
Observe the following precautions to reduce the risk of accidents. 
Failure to do so may result in the vehicle being unable to be driven safely,
and may cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being
used, or 30 mph (50 km/h), whichever is lower.
● Avoid driving on bumpy road surfaces or over potholes.
● Avoid sudden turns and braking, as use of chains may adversely affect
vehicle handling.
● Slow down sufficiently before entering a curve to ensure that vehicle con-
trol is maintained.
● Do not use LKA (Lane-Keeping Assist) system (if equipped).
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow tires from Toyota dealers or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affects the opera-
tion of the tire pressure warning valves and transmitters.
■ Fitting tire chains
The tire pressure warning valves and transmitters may not function correctly
when tire chains are fitted.