2021 TOYOTA PRIUS air conditioning

PRIUS_OM_OM47E09U_(U)
4575-1. Using the air conditioning system and defogger
5
Interior features
Turns the heated steering wheel
on/off
The indicator in the instrument
cluster comes on when the heated
steering wheel is operating.
●The heated steering wheel can be used when the power switch is in ON
mode.
● The heated steering wheel will automatically turn off after about 30 minutes.
Heats the seat at low tempera-
ture (LO)
Heats the seat at high tempera-
ture (HI)
The indicator light comes on when
one side of the switch is pressed.
To stop the operation, gently press
the other side of the switch.
●The seat heaters can be used when the power switch is in ON mod e.
● When not in use, turn off the switch. The indicator light goes off.
Heated steering wheel (if equipped)
Seat heaters (if equipped)
Indicator
Indicator
1
2

495
PRIUS_OM_OM47E09U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 496
Cleaning and protecting the vehicle interior ........... 502
6-2. Maintenance Maintenance requirements ................... 505
General maintenance........ 508
Emission inspection and maintenance (I/M)
programs......................... 511
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 512
Hood ................................. 515
Positioning a floor jack ...... 517
Engine compartment ......... 518
Tires .................................. 532
Tire inflation pressure ....... 542
Wheels .............................. 545
Air conditioning filter.......... 548
Cleaning the hybrid battery (traction battery) air intake
vent and filter .................. 551
Wiper insert replacement .................... 556
Electronic key battery........ 560
Checking and replacing fuses ............................... 563
Headlight aim .................... 566
Light bulbs......................... 568

PRIUS_OM_OM47E09U_(U)
5016-1. Maintenance and care
6
Maintenance and care
NOTICE
■When using a high pressure car wash
● When washing the vehicle, do not let water of the high pressure washer hit
directly or the vicinity of the camera. Due to the shock from t he high pres-
sure water, it is possible the device may not operate as normal .
● Do not bring the nozzle tip close to boots (rubber or resin man ufactured
cover), connectors or the following parts. The parts may be dam aged if
they come into contact with high-pressure water.
• Traction related parts
• Steering parts
• Suspension parts
• Brake parts
● Keep the cleaning nozzle at least 11.9 in. (30 cm) away from th e vehicle
body. Otherwise resin section, such as moldings and bumpers, ma y be
deformed and damaged. Also, do not continuously hold the nozzle in the
same place.
● Do not spray the lower part of the windshield continuously.
If water enters the air conditioning system intake located near the lower
part of the windshield, the air conditioning system may not ope rate cor-
rectly.
● Do not wash the underside of the vehicle using a high pressure car
washer.
■ When raising the windshield wiper arms
Make sure to hold the hook parts of the
wiper arms to raise them.
Do not hold only the wiper blades when
raising them, or it may cause deformation
of the wiper blades.
Hook parts

PRIUS_OM_OM47E09U_(U)
5136-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation
pressure
( P. 542)• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 5 3 0 )• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)
WARNING
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 “Accessory”, “Ignition ON” or mileage displa y
( P. 116) on the main display 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 r ags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
● Be extremely cautious when working on the 12-volt battery. It c ontains poi-
sonous and corrosive sulfuric acid.
■ When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. ( P. 524)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
ItemsParts and tools

524
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehic le inspected by your Toyota dea ler.
Check the 12-volt battery as follows:
■12-volt battery exterior
Make sure that the 12-volt battery terminals are not corroded a nd
that there are no loose connecti ons, cracks, or loose clamps.
Terminals
Radiator and condenser
WARNING
■ When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and c ause seri-
ous injuries, such as burns.
■ When the electric cooling fans are operating
Do not touch the engine compartment.
With the power switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. Be sure the power switch is off when working near the electric cool-
ing fans or radiator grille.
12-volt battery

548
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
Air conditioning filter
Turn the power switch off.
Open the glove box and slide
off the damper.
Push in each side of the glove
box to disconnect the claws,
and then slowly and fully open
the glove box while supporting
it.
With the glove box fully open,
slightly lift up the glove box and
pull toward the seat to detach
the bottom of the glove box.
Do not use excessive force if the
glove box does not detach when
lightly pulled. Instead, pull toward
the seat while slightly adjusting the
height of the glove box.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Replacing the air conditioning filter
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3
4

PRIUS_OM_OM47E09U_(U)
5496-3. Do-it-yourself maintenance
6
Maintenance and care
Remove the filter cover.
Unlock the filter cover.
Move the filter cover in the
direction of the arrow, and then
pull it out of the claws.
Remove the filter case.
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The “UP” marks shown on the fil-
ter should be pointing up.
When installing, rever se the steps listed.
5
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2
6
7
8

550
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
■Checking interval
Inspect and replace the air conditioning filter according to th e maintenance
schedule. In dusty areas or areas with heavy traffic flow, earl y 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 ven ts decreases dramatically
The filter may be clogged. Check the filter and replace if nece ssary.
NOTICE
■When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause da mage to the
system.
■ When removing the glove box
Always follow the specified procedure to remove the glove box ( P. 548). If
the glove box is removed without following the specified proced ure, the
hinge of the glove box may become damaged.
■ To prevent damage to the filter cover
When moving the filter cover in the direc-
tion of arrow to release the fitting, pay
attention not to apply excessive force to
the claws. Otherwise, the claws may be
damaged.