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2
3
4
5
6
7
5
PRIUS v_OM_OM47820U_(U)
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 350
Cleaning and protecting the vehicle interior............. 354
4-2. Maintenance Maintenance requirements ..................... 357
General maintenance.......... 360
Emission inspection and maintenance (I/M)
programs........................... 364
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 365
Hood ................................... 368
Positioning a floor jack ........ 371
Engine compartment ........... 374
12-volt battery ..................... 386
Tires .................................... 391
Tire inflation pressure ......... 400
Wheels ................................ 404
Air conditioning filter............ 407
Electronic key battery.......... 409
Checking and replacing fuses ................................. 411
Light bulbs........................... 422 5-1. Essential information
Emergency flashers............ 438
If your vehicle needs to be towed................................ 439
If you think something is wrong ............................... 445
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds.............................. 446
If you have a flat tire ........... 464
If the hybrid system will not start ............................ 478
If you lose your keys........... 480
If the electronic key does not operate properly ......... 481
If the 12-volt battery is discharged........................ 483
If your vehicle overheats .... 489
If the vehicle becomes stuck ................................. 493
If your vehicle has to be stopped in an
emergency ....................... 495
4Maintenance and care5When trouble arises
Page 280 of 568
280
PRIUS v_OM_OM47820U_(U)
3-1. Using the air conditioning system and defogger
Automatic air conditioning system
Air outlets and fan speed are automatically adjusted according to the
temperature setting.
“OFF” button
Fan speed display
Micro dust and
pollen filter button
Cooling and
dehumidification
function on/off
button
Outside/recirculated
air mode button
Outside
temperature
display
Windshield
defogger
button
Air outlet display
Temperature setting display
Automatic mode Function select Adjust/select
Page 287 of 568
287
3-1. Using the air conditioning system
and defogger
PRIUS v_OM_OM47820U_(U)
3
Interior features
Micro dust and pollen filter button
Operates micro dust and pollen
filter on/off.
Outside air mode switches to
recirculated air mode. Pollen is
removed from the air and the air
flows to the upper part of the
body.
Usually the system will turn off
automatically after approximately
3 minutes.
Page 291 of 568

291
3-1. Using the air conditioning system
and defogger
PRIUS v_OM_OM47820U_(U)
3
Interior features
■Window defogger feature
Recirculated air mode may automatically switch to outside air mode in situa-
tions where the windows need to be defogged.
■ Micro dust and pollen filter
● In order to prevent the windshield from fogging up when the outside air is
cold, the following may occur:
• Outside air mode does not switch to recirculated air mode.
• The air conditioning system operates automatically.
• The operation cancels after 1 minute.
● In rainy weather, the windows may fog up. Press .
■ Outside temperature display
In the following situations, the correct outside temperature may not be dis-
played, or the display may take longer than normal to change.
● When stopped, or driving at low speeds (less than 16 mph [25 km/h])
● When the outside temperature has changed suddenly (at the entrance/
exit of a garage, tunnel, etc.)
■ Operation of the air conditio ning system in Eco drive mode
In the Eco drive mode, the air conditioning system is controlled as follows to
prioritize fuel efficiency:
● Engine speed and compressor operation controlled to restrict heating/
cooling capacity
● Fan speed restricted when automatic mode is selected
To improve air conditioning performance, perform the following operations:
● Adjust the fan speed
● Turn off Eco drive mode ( P. 187)
● Customize the air conditioning control of Eco drive mode. ( P. 531)
Page 349 of 568
Maintenance and care4
349
PRIUS v_OM_OM47820U_(U)
4-1. Maintenance and careCleaning and protecting the vehicle exterior ......... 350
Cleaning and protecting the vehicle interior .......... 354
4-2. Maintenance Maintenance requirements .................. 357
General maintenance....... 360
Emission inspection and maintenance (I/M)
programs ........................ 364
4-3. Do-it-yourself maintenance Do-it-yourself service precautions .................... 365
Hood ................................ 368
Positioning a floor jack ..... 371
Engine compartment ........ 374
12-volt battery .................. 386
Tires ................................. 391
Tire inflation pressure ...... 400
Wheels ............................. 404
Air conditioning filter......... 407
Electronic key battery....... 409
Checking and replacing fuses .............................. 411
Light bulbs........................ 422
Page 367 of 568

367
4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47820U_(U)
4
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■
When working on the engine compartment
● Make sure that the indicator on the “POWER” switch and the “READY”
indicator are both off.
● Keep hands, clothing and tools away from the moving fan.
● Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids
may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
■ When working near the electric c ooling fans or radiator grille
Be sure the “POWER” switch is off.
With the “POWER” switch in ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. ( P. 381)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.
Page 407 of 568
407
4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47820U_(U)
4
Maintenance and care
Air conditioning filter
The air conditioning filter must be changed regularly to maintain air
conditioning efficiency.
■ Removal method
Turn the “POWER” switch off.
Open the glove box and
remove the filter exchange
cover.
Remove the filter cover.
Slide and pull out the filter.
STEP 1
STEP 2
STEP 3
STEP 4
Page 408 of 568
408 4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47820U_(U)
■Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to
the “Scheduled Maintenance Guide” or “Owner’s Manual Supplement”.)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
NOTICE
■To prevent damage to the system
When using the air conditioning system, make sure that a filter is always
installed.
■ Replacement method
Replace it with a new one.
The “UP” marks shown on
the filter should be pointing up.