2023 TOYOTA C-HR overheating

5174-5. Using the driving support systems
4
Driving
C-HR_HEV_OM_Europe_OM10764E
When the Simple Intelligent Parking Assist System cannot be oper-
ated, or when operation is stopped, canceled, etc., the one of the fol-
lowing message is displayed on the multi-information display. T ake
appropriate action according to the display.
■When it is not possible to operate
Multi-information display messages
MessageSituation/Handling method
“IPA System Check Visit
Your Dealer”
The system may be malfunctioning.
 Turn the power switch off and then start
the hybrid system.
Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer if the message is displayed
again.
“Currently Unavailable”
There may be a system failure.
Power steering equipment is temporarily
overheating.
 Turn the power switch off, wait for a lit-
tle while, and then start the hybrid sys-
tem again.
The hybrid system is not operating.
 Start the hybrid system.
Ice, snow, dirt, etc., has adhered to a sensor.
 Remove any ice, snow, dirt, etc.
The sensor is frozen.
 Once the sensor thaws, the system will
return to normal.
The 12-volt battery has been removed and
reinstalled.
 Drive the vehicle straight ahead for 5
seconds or more at a speed of approxi-
mately 35 km/h (22 mph) or higher.

5344-5. Using the driving support systems
C-HR_HEV_OM_Europe_OM10764E
■ Active Cornering Assist operation sounds and vibrations
When the Active Cornering Assi st is operated, operation sounds and vibra-
tions may be generated from the brake system, but this is not a malfunction.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring so und) may be
heard. This does not indicate a malfunction.
■ Automatic reactivation of TRC, Trailer Sway Control and VSC systems
After turning the TRC, Trailer Sway Control and VSC systems off , the sys-
tems will be automatically re- enabled in the following situations:
● When the power switch is turned off
● If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic re-en abling will
not occur when vehicle speed increases.
■ Operating conditions of Active Cornering Assist
The system operates when the following occurs:
● TRC/VSC can operate
● The driver is attempting to accelerate while turning
● The system detects that the vehicle is drifting to the outer side
● The brake pedal is released
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the s ystem from
overheating when there is frequent steering input over an exten ded period of
time. The steering wheel may feel heavy as a result. Should thi s occur, refrain
from excessive steering input or stop the vehicle and turn the hybrid system
off. The EPS system should return to normal within 10 minutes.
■ Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assi st control will
operate:
● The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline)
● The vehicle is stopped
● The accelerator pedal is not depressed
● The parking brake is not engaged

5555-1. Using the air conditioning system and defogger
5
Interior features
C-HR_HEV_OM_Europe_OM10764E
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.

7557-2. Steps to take in an emergency
C-HR_HEV_OM_Europe_OM10764E
7
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

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

802Alphabetical index
C-HR_HEV_OM_Europe_OM10764E
Identification number............. 766
If the hybrid system will not
start..................................... 742
If your vehicle has to be
stopped in an emergency ... 669
Ignition switch
(power switch) .................... 303
Overheating .......................... 755
Power switch ......................... 303
Engine coolant
Capacity ................................ 771
Checking ............................... 602
Preparing and
checking before winter........ 541
Warning light ......................... 684
Engine oil
Capacity ................................ 768
Checking ............................... 599
Oil pressure warning light ..... 679
Preparing and checking
before winter....................... 541
Engine switch........................... 303
Auto power off function ......... 305
Changing the
power switch modes ........... 304
If your vehicle has to be
stopped in an emergency ... 669
Starting the hybrid system .... 303
EPS
(Electronic Power Steering)
Function ................................ 531
Warning light ......................... 680
EV drive mode .......................... 310
EV indicator ...................... 119, 161
Exhaust gas precautions .......... 54
Extended headlight lighting
system .................................... 332
First-aid kit storage space ...... 567
Flat tire.............................. 697, 727
Floor mats .................................. 32
Fluid
Brake .................................... 773
Transmission ........................ 772
Washer ................................. 609
Fog lights
Replacing
light bulbs ........... 653, 660, 664
Switch ................................... 341
Wattage ................................ 776
Front doors .............................. 191
Front fog lights
Replacing light bulbs..... 653, 664
Switch ................................... 341
Wattage ................................ 776
Front personal lights ............... 558
Wattage ................................ 776
Front position lights
Light switch ........................... 331
Replacing light bulbs............. 664
Front seats ............................... 260
Adjustment ............................ 260
Cleaning................................ 584
Correct driving posture ........... 34
Head restraints ..................... 264
Seat heaters ......................... 555
Front turn signal lights
Replacing light bulbs..... 655, 664
Turn signal lever ................... 322
Wattage ................................ 776
F

804Alphabetical index
C-HR_HEV_OM_Europe_OM10764E
Hybrid battery
(traction battery)
Location ................................ 122
Specification.......................... 768
Hybrid battery
(traction battery)
air intake vent ................ 123, 638
Hybrid system .......................... 117
Acoustic vehicle alerting
system ................................ 118
Brake Override System ......... 284
Drive-Start Control ................ 284
Emergency shut off
system ................................ 123
Energy monitor/
consumption screen ........... 177
EV drive mode ...................... 310
High voltage components ..... 122
Hybrid Electric Vehicle
driving tips .......................... 538
Hybrid System Indicator ........ 166
Hybrid system precautions.... 122
If the hybrid system will not
start..................................... 742
Overheating .......................... 755
Power switch ......................... 303
Regenerative braking ............ 119
Starting the hybrid system .... 303
Hybrid System Indicator ......... 166
Hybrid transmission ................ 313
Identification
Engine................................... 766
Vehicle .................................. 765
Ignition switch
(Power switch) ....................... 303
Auto power off function ......... 305
Changing the
power switch modes........... 304
If your vehicle has to be
stopped in an emergency ... 669
Starting the
hybrid system ..................... 303
Illuminated entry system ........ 559
Immobilizer system ................. 129
Indicators ................................. 159
Initialization
Items to initialize ................... 791
PKSB
(Parking Support Brake)..... 481
Power windows ..................... 277
S-IPA (Simple Intelligent
Parking Assist System) ...... 490
Tire pressure warning
system ................................ 617
Inside rear view mirror ............ 270
Instrument cluster light
control .................................... 171
Interior lights............................ 557
Switch ................................... 558
Wattage ................................ 776
Intrusion sensor ...................... 150
ISOFIX lower anchorages ......... 92
I

806Alphabetical index
C-HR_HEV_OM_Europe_OM10764E
Maintenance
Do-it-yourself maintenance ... 591
Maintenance data ................. 764
Maintenance requirements ... 588
Malfunction indicator lamp ..... 680
Manual headlight leveling
dial .......................................... 333
Meter
Indicators .............................. 159
Meter light control ................. 171
Multi-information display ....... 168
Warning lights ....................... 157
Microphone*
Mirrors
Inside rear view mirror .......... 270
Outside rear view mirror
defoggers............................ 550
Outside rear view mirrors ...... 272
Vanity mirrors ........................ 572
Multi-information display
BSM (Blind Spot Monitor) ..... 435
Drive information ................... 169
Dynamic radar cruise control
with full-speed range .......... 408
Energy monitor...................... 177
Language .............................. 171
LTA (Lane Tracing Assist) .... 385
Parking assist system ........... 455
Pre-collision warning ............. 367
RSA (Road Sign Assist) ........ 401
Settings ................................. 171
Warning message ................. 690
Multimedia system*
Navigation system*
Odometer.................................. 164
Oil
Engine oil .............................. 768
Opener
Back door.............................. 200
Fuel filler door ....................... 350
Hood ..................................... 594
Outside rear view mirrors ....... 272
Adjustment ............................ 272
Blind Spot Monitor ................ 435
Folding .................................. 273
Outside rear view mirror
defoggers ........................... 550
Outside temperature
display .................................... 164
Overheating.............................. 755
Overheating, Engine................ 755
Parking assist sensors
S-IPA (Simple Intelligent
Parking Assist System) ...... 490
Toyota parking
assist-sensor ...................... 454
Parking brake ........................... 323
Parking brake engaged
warning buzzer ................... 326
Warning light ................. 682, 683
Parking Support Brake
function (rear-crossing
vehicles) ................................. 487
Parking Support Brake
function (static objects)........ 483
PCS (Pre-Collision System)
Enabling/disabling the
system ................................ 373
Function ................................ 367
Warning light ......................... 682
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