air condition TOYOTA C-HR 2022 Service Manual

5565-1. Using the air conditioning system and defogger
C-HR_HV_OM_Europe_OM10720E
WARNING
■To prevent the windshield from fogging up
● Do not use during cool air operation in extremely humid weather.
The difference between the temperature of the outside air and t hat of the
windshield can cause the outer surface of the windshield to fog up, block-
ing your vision.
■ To prevent burns
● Do not touch the rear view mirror surfaces when the outside rear view mir-
ror defoggers are on.
● Vehicles with windshield wiper de-icer: Do not touch the glass at the lower
part of the windshield or to the side of the front pillars when the windshield
wiper de-icer is on.
■ nanoe™ generator (if equipped)
Do not disassemble or repair the generator because it contains high voltage
parts.
Contact any authorized Toyota retailer or Toyota authorized rep airer, or any
reliable repairer if the generator needs repair.
NOTICE
■ To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessa ry when the
hybrid system is off.
■ To prevent damage to the nanoe™ (if equipped)
Do not insert anything into the passenger’s side vent, attach a nything to it,
or use sprays around the passenger’s side vent. These things ma y cause
the generator not to work properly.
● Do not place anything on the instrument
panel which may cover the air outlets.
Otherwise, air flow may be obstructed,
preventing the windshield defoggers
from defogging.

5575-1. Using the air conditioning system and defogger
5
Interior features
C-HR_HV_OM_Europe_OM10720E
Heated steering wheel/seat heaters
: If equipped
Heated steering wheel and seat heaters heat the side grips of the
steering wheel and front seats, respectively.
WARNING
● Care should be taken to prevent injury if anyone in the following categories
comes in contact with the steering wheel and seats when the hea ter is on:
• Babies, small children, the elderly, the sick and the physical ly chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sle eping
drugs, cold remedies, etc.)
● Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat
heater.
• Do not use seat heater more than necessary.
NOTICE
● Do not put heavy objects that have an uneven surface on the seat and do
not stick sharp objects (needles, nails, etc.) into the seat.
● To prevent 12-volt battery discharge, do not use the functions when the
hybrid system is off.

5585-1. Using the air conditioning system and defogger
C-HR_HV_OM_Europe_OM10720E
Turns the heated steering wheel on/off
The indicator light comes on when the heated steering wheel is operating.
■Operating condition
The heated steering wheel can be used when the power switch is in ON
mode.
Each time the switch is pressed,
the operation condition changes
as follows.
Hi (3 segments lit)  Mid (2 seg-
ments lit)  Lo (1 segment lit) 
Off
The level indicator (amber) lights
up during operation.
■ Operating condition
The seat heaters can be used when the power switch is in ON mod e.
Heated steering wheel
Left-hand drive vehiclesRight-hand drive vehicles
Seat heaters

579
6Maintenance and care
C-HR_HV_OM_Europe_OM10720E
6-1. Maintenance and care
Cleaning and protecting the
vehicle exterior ................ 580
Cleaning and protecting the
vehicle interior ................. 586
6-2. Maintenance
Maintenance
requirements.................... 590
6-3. Do-it-yourself
maintenance
Do-it-yourself service
precautions ...................... 593
Hood .................................. 596
Positioning a floor jack ....... 598
Engine compartment.......... 599
12-volt battery
(M20A-FXS engine) ......... 612
Tires ................................... 616
Tire inflation pressure ........ 632
Wheels ............................... 634
Air conditioning filter .......... 637
Hybrid battery
(traction battery) air intake
vent and filter ................... 640
Electronic key battery ........ 645
Checking and replacing
fuses ................................ 648
Light bulbs ......................... 653

5856-1. Maintenance and care
6
Maintenance and care
C-HR_HV_OM_Europe_OM10720E
NOTICE
■When using a high pressure car wash
● Vehicles with back camera: When washing the vehicle, do not let water of
the high pressure washer hit directly or the vicinity of the ca mera. Due to
the shock from the high pressure water, it is possible the devi ce may not
operate as normal.
● Vehicles with Toyota Safety Sense: Do not spray water directly on the
radar which is equipped behind the emblem. Otherwise it may cau se the
device to be damaged.
● Do not bring the nozzle tip close to boots (rubber or resin manufactured
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 30 cm (11.9 in.) away from the 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

5936-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
6
Maintenance and care
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
12-volt battery
condition
( P. 606)
2ZR-FXE engine
• Warm water • Baking soda • Grease
• Conventional wrench (for terminal clamp bolts)
M20A-FXS engine
• Grease
• Conventional wrench (for terminal clamp bolts)
Engine/power
control unit
coolant level
( P. 604)
• “Toyota Super Long Life Coolant” or a similar high
quality ethylene glycol-based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
( P. 601)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 6 4 8 )• Fuse with same amperage rating as original
Hybrid battery
(traction battery)
air intake vent
( P. 640)
• Vacuum cleaner, etc.
• Phillips screwdriver
Light bulbs
( P. 653)
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver•Wrench
Radiator and
condenser
( P. 606)


5946-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
Tire inflation
pressure
( P. 632)
• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 6 1 1 )
• 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” or “IGNITION ON” on the multi-infor-
mation 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 rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the 12-volt
battery. Fuel and 12-volt battery fumes are flammable.
● Be extremely cautious when working on the 12-volt battery. It contains poi-
sonous and corrosive sulfuric acid.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. If fluid gets on your hands or in your eyes, flush the
affected area with clean water immediately. If you still experi ence discom-
fort, consult a doctor.
■ 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 coo lant temperature
is high. ( P. 606)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, flui d spray, etc.,
from getting in your eyes.
ItemsParts and tools

6066-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
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 vehicle inspected by any authorized To y o t a
retailer or Toyota authorized repairer, or any reliable repaire r.
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 connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
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.
12-volt battery (2ZR-FXE engine)

6226-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
■ The initialization operation
● Make sure to carry out initialization after adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initiali zation or tire
inflation pressure adjustment.
● If you have accidentally turned the power switch off during initialization, it is
not necessary to press the reset switch again as initialization will restart
automatically when the power switch has been turned to ON mode for the
next time.
● If you accidentally press the reset switch when initialization is not necessary,
adjust the tire inflation pressure to the specified level when the tires are
cold, and conduct initialization again.
■ Warning performance of the tire pressure warning system
The warning of the tire pressure warning system will change in accordance
with the conditions under which it was initialized. For this re ason, the system
may give a warning even if the tire pressure does not reach a l ow enough
level, or if the pressure is higher than the pressure that was adjusted to when
the system was initialized.
■ When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in t he following
cases, the settings have not been recorded and the system will not operate
properly. If repeated attempts to record tire inflation pressur e settings are
unsuccessful, have the vehicle inspected by any authorized Toyo ta retailer or
Toyota authorized repairer, or any reliable repairer as soon as possible.
● When operating the initialization of the system, the tire pressure warning
light does not flash 3 times and the setting message does not a ppear on the
multi-information display.
● After driving for a certain period of time since the initialization has been
completed, the warning light comes on after blinking for 1 minu te.
■ Registering ID codes
The ID codes of the tire pressure warning valve and transmitter s for two sets
of wheels can be registered.
It is not necessary to register the ID codes when replacing nor mal tires with
snow tires, if the ID codes for the wheels of both normal tires and snow tires
are registered beforehand.
For information about changing ID codes, ask any authorized Toy ota retailer
or Toyota authorized repairer, or any reliable repairer.

6316-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
6
Maintenance and care
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves,
transmitters and tire valve caps
● When removing or fitting the wheels, tires or the tire pressure warning
valves and transmitters, contact any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer as the tire press ure warning
valves and transmitters may be damaged if not handled correctly .
● Make sure to install the tire valve caps. If the tire valve caps are not
installed, water could enter the tire pressure warning valves a nd the tire
pressure warning valves could be bound.
● When replacing tire valve caps, do not use tire valve caps other than those
specified.
The cap may become stuck.
■ Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause losses in tire inflation pressure, r educing the
cushioning ability of the tires. In addition, driving on rough roads may cause
damage to the tires themselves, as well as the vehicle’s wheels and body.
■ To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve
and transmitter may not operate properly. If a liquid sealant i s used, contact
any authorized Toyota retailer or Toyota authorized repairer, o r any reliable
repairer or other qualified service shop as soon as possible. A fter use of liq-
uid sealant, make sure to replace the tire pressure warning val ve and trans-
mitter when repairing or replacing the tire. ( P. 618)
■ If tire inflation pressure of each tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be rui ned.