2023 TOYOTA C-HR cooling

7557-2. Steps to take in an emergency
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When trouble arises
If your vehicle overheats
●The needle of the engine coolant temperature gauge (P. 1 6 4 )
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
● “Hybrid System Overheated Reduced Output Power.” is shown on
the multi-information display.
● Steam comes out from under the hood.
■If the high coolant temperature warning light comes on
Stop the vehicle in a safe place and turn off the air condition ing
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect t he
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immediately contact any aut ho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable
repairer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
2ZR-FXE engineM20A-FXS engine

7567-2. Steps to take in an emergency
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The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for
coolant leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating b y checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fans may not opera te in
freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
4
5
6
7

7577-2. Steps to take in an emergency
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When trouble arises
■If “Hybrid System Overheated Reduced Output Power.” is
shown on the multi-information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immediately contact any aut ho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable
repairer.
The coolant level is satisfactory if it is between the “FULL” o r “F”
and “LOW” or “L” lines on the reservoir.
Reservoir
“FULL” or “F” line
“LOW” or “L” line
1
2
3
2ZR-FXE engineM20A-FXS engine
4
2ZR-FXE engineM20A-FXS engine

7597-2. Steps to take in an emergency
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When trouble arises
WARNING
■To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may au tomati-
cally start, or the cooling fans may suddenly operate even if t he gasoline
engine stops. Do not touch or approach rotating parts such as t he fan,
which may lead to fingers or clothing (especially a tie, a scar f or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
NOTICE
■ When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down suff iciently.
Adding cool coolant to a hot hybrid system too quickly can caus e damage to
the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust,
etc.).
● Do not use any coolant additive.

7718-1. Specifications
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Vehicle specifications
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota reta iler or
Toyota authorized repairer, or any reliable repairer.
Cooling system
Capacity*
Gasoline
engine
2ZR-FXE engine
5.4 L (5.7 qt., 4.7 Imp.qt.)
M20A-FXS engine
5.9 L (6.2 qt., 5.2 Imp.qt.)
Power
control unit
2ZR-FXE engine
1.4 L (1.5 qt., 1.3 Imp.qt.)
M20A-FXS engine
1.6 L (1.7 qt., 1.4 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
Make
2ZR-FXE engine
DENSO FC16HR-CY9
M20A-FXS engine
DENSO FC16HR-Q8
Gap
2ZR-FXE engine
0.9 mm (0.035 in.)
M20A-FXS engine
0.8 mm (0.031 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.

800Alphabetical index
C-HR_HEV_OM_Europe_OM10764E
Child-protectors ....................... 195
Cleaning
Aluminum wheels .................. 579
Camera sensor ..................... 355
Exterior.................................. 578
Hybrid battery
(traction battery)
air intake vent ..................... 638
Interior ................................... 584
Radar sensor ........................ 354
Seat belts .............................. 585
Clock ......................................... 573
Condenser ................................ 604
Console box ............................. 561
Consumption screen ............... 177
Coolant
Capacity ................................ 771
Checking ............................... 602
Preparing and
checking before winter........ 541
Cooling system ........................ 602
Hybrid system overheating ... 755
Cruise control
Cruise control ........................ 425
Dynamic radar cruise control
with full-speed range .......... 408
Cup holders .............................. 563
Curtain shield airbags ............... 41
Customizable features ............ 779
Daytime running light
system .................................... 334
Deck board ............................... 565
Defogger
Outside rear view mirrors...... 550
Rear window ......................... 550
Windshield ............................ 549
Dimension ................................ 764
Display
BSM (Blind Spot Monitor) ..... 435
Drive information................... 169
Dynamic radar cruise control
with full-speed range .......... 408
Energy monitor ..................... 177
LTA (Lane Tracing Assist) .... 385
Multi-information display ....... 168
Parking assist system ........... 455
Pre-collision warning............. 367
RSA (Road Sign Assist)........ 401
Warning messages ............... 690
Do-it-yourself maintenance .... 591
Door lock
Back door.............................. 199
Side doors............................. 191
Smart entry & start
system ........................ 191, 199
Wireless
remote control ............ 192, 199
Doors
Back door.............................. 199
Door glasses ......................... 275
Door lock............................... 191
Open door
warning buzzer ........... 197, 200
Outside rear view mirrors...... 272
Rear door child-protectors .... 195
Side doors............................. 191
D