2023 TOYOTA RAV4 PLUG-IN HYBRID overheating

4185-5. Using the driving support systems
■Sounds and vibrations caused by
the ABS, brake assist, VSC, Trailer
Sway Control, TRC and hill-start
assist control systems
●A sound may be heard from the
engine compartment when the brake
pedal is depressed repeatedly, when
the hybrid system is started or just
after the vehicle begins to move. This
sound does not indicate that a mal-
function has occurred in any of these
systems.
●Any of the following conditions may
occur when the above systems are
operating. None of these indicates
that a malfunction has occurred.
• Vibrations may be felt through the
vehicle body and steering.
• A motor sound may be heard also
after the vehicle comes to a stop.
■ECB operating sound
ECB operating sound may be heard in
the following cases, but it does not indi-
cate that a malfunction has occurred.
●Operating sound heard from the
engine compartment when the brake
pedal is operated.
●Motor sound of the brake system
heard from the front part of the vehicle
when the driver’s door is opened.
●Operating sound heard from the
engine compartment when one or two
minutes passed after the stop of the
hybrid system.
■Active Cornering Assist operation
sounds and vibrations
When the Active Cornering Assist is
operated, operation sounds and vibra-
tions may be generated from the brake
system, but this is not a malfunction.
■Automatic reactivation of TRC,
Trailer Sway Control and VSC sys-
tems
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-enabling will
not occur when vehicle speed
increases.
■Operating conditions of Active Cor-
nering 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 system from
overheating when there is frequent
steering input over an extended period
of time. The steering wheel may feel
heavy as a result. Should this occur,
refrain from excessive steering input or
stop the vehicle and turn the hybrid sys-
tem off. The EPS system should return
to normal within 10 minutes.
■Operating conditions of emergency
brake signal
When the following conditions are met,
the emergency brake signal will operate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h
(35 mph).
●The system judges from the vehicle
deceleration that it is a sudden brak-
ing operation.
■Automatic system cancelation of
emergency brake signal
The emergency brake signal will be can-
celed in any of the following situations:
●The emergency flashers are turned
on.
●The system judges from the vehicle

419
5
5-5. Using the driving support systems
Driving
deceleration that is not a sudden brak-
ing operation.
■Secondary Collision Brake operat- ing conditions (if equipped)
The system operates when the SRS air-
bag sensor detects a collision while the vehicle is in motion. However, the sys-tem does not operate when the compo-
nents are damaged.
■Secondary Collision Brake auto- matic cancellation (if equipped)
The system is automatically canceled in
any of the following situations.
●The vehicle speed drops to approxi-
mately 10 km/h (6 mph).
●A certain amount of time elapses
during operation
●The accelerator pedal is depressed a
large amount
■If a message about AWD is shown on the multi-information display (AWD models)
Perform the following actions.
●“AWD System Overheated Switching
to 2WD Mode”
AWD system is overheated. Stop the
vehicle in a safe place with the hybrid
system operating.*
If the message disappears after a while,
there is no problem. If the message
remains, have the vehicle inspected by
any authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer immediately.
●“AWD System Overheated 2WD
Mode Engaged”
AWD system has been temporarily
released and switched to front-wheel
drive due to overheating. Stop the vehi-
cle in a safe place with the hybrid sys-
tem operating.*
If the message disappears after a while,
AWD system will automatically recover.
If the message remains, have the vehi-
cle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or
any reliable repairer immediately.
●“AWD System Malfunction 2WD Mode Engaged Visit Your Dealer”
A malfunction occurs in the AWD sys-
tem. Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer immediately.
*: When stopping the vehicle, do not
stop the hybrid system until the dis-
play message has turned off.
WARNING
■The ABS does not operate effec-
tively when
●The limits of tire gripping perfor- mance have been exceeded (such
as excessively worn tires on a snow covered road).
●The vehicle hydroplanes while driv-ing at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of
normal conditions
The ABS is not designed to shorten the vehicle’s stopping distance.
Always maintain a safe distance from the vehicle in front of you, especially in the following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the
road
●When driving over roads with pot-
holes or uneven surfaces

535
8
8-2. Steps to take in an emergency
When trouble arises
■Charging system warning light
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
■Hybrid system overheat warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging sys-
tem
 Immediately stop the vehicle in a safe place
and contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.
Warning lightDetails/Actions
Indicates that the engine is overheating
 Immediately stop the vehicle in a safe place.
Handling method ( P.578)
Warning lightDetails/Actions
Indicates that the hybrid system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.578)
Warning lightDetails/Actions
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place
and contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.

5788-2. Steps to take in an emergency
■If the high coolant temperature
warning light comes on,
flashes or “Engine Coolant
Temp High Stop in a Safe
Place See Owner’s Manual” is
shown on the multi-informa-
tion display
1 Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the hybrid
system.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entangled in the cooling fan, etc.
■To prevent damaging the vehicle
The exclusive jump starting terminal is to be used when charging the 12-
volt battery from another vehicle in an emergency. It cannot be used to jump start another vehicle.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The high coolant temperature
warning light ( P.183) comes
on or flashes, or a loss of
hybrid system power is experi-
enced. (For example, the vehi-
cle speed does not increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown on
the multi-information display.
 Steam comes out from under
the hood.
Correction procedures

617Alphabetical Index
out ............................................ 167
Charging port ................................ 106
If the charging port lid does not open
................................................. 121
Locking and unlocking ............... 121
Opening and closing .................. 107
Child-protector.............................. 239
Child restraint system .................... 50
Child restraint system installation
method....................................... 60
Fixed with a seat belt ................... 61
Fixed with an ISOFIX lower anchor-
age ............................................. 63
Points to remember...................... 51
Riding with children ...................... 49
Using a top tether anchorage....... 64
Child safety ..................................... 49
12-volt battery precautions. 485, 577
Airbag precautions ....................... 44
Back door precautions ............... 240
Charging precautions ................. 132
Heated steering wheel and seat
heater precautions ................... 440
How your child should wear the seat
belt ............................................. 36
Panoramic moon roof precautions
................................................. 284
Power window lock switch ......... 281
Power window precautions ........ 280
Rear door child-protectors ......... 239
Seat belt precautions ................... 35
Seat heater precautions ............. 440
Cleaning ................................ 466, 469
Aluminum wheels ....................... 466
DC/DC Converter air intake vent 504
Exterior....................................... 466
Front camera.............................. 339
Interior ........................................ 469
Radar sensor ............................. 339
Seat belts ................................... 469
Water-repellent coating .............. 467Clock ......................................192, 193
Coat hooks .................................... 463
Condenser ..................................... 482
Console box .................................. 446
Consumption screen .................... 226
Convenience Services (Suggestion
function) ...................... 209, 221, 596
Coolant
Capacity ..................................... 588
Checking .................................... 481
Preparing and checking before win-
ter ............................................. 422
Warning light .............................. 535
Cooling system .............................481
Engine overheating .................... 578
Hybrid system overheating......... 580
Cruise control
Cruise control .............................381
Dynamic radar cruise control with
full-speed range .......................368
Cup holders ...................................447
Current fuel economy... 201, 213, 216
Curtain shield airbags ....................39
Customizable features ................. 594
D
Daytime running light system ..... 326
Replacing light bulbs ..................516
DC/DC converter air intake vent .... 99
Cleaning ..................................... 504
Deck board .................................... 449
Deck under tray.............................450
Defogger
Outside rear view mirrors ........... 432
Rear window .............................. 432
Windshield.................................. 431
Digital Rear-view Mirror ............... 268
Dimensions ...................................584
Display
BSM (Blind Spot Monitor)........... 387
Consumption screen ..................226

619Alphabetical Index
Operation ................................... 282
Emergency, in case of
If a warning buzzer sounds ........ 534
If a warning light turns on ........... 534
If a warning message is displayed
................................................. 544
If the 12-volt battery is discharged
................................................. 573
If the electronic key does not operate
properly.................................... 571
If the fuel filler door cannot be
opened..................................... 570
If the hybrid system will not start 568
If the vehicle is submerged or water
on the road is rising ................. 527
If you have a flat tire........... 548, 559
If you lose your keys .................. 570
If you think something is wrong.. 532
If your vehicle becomes stuck .... 582
If your vehicle has to be stopped in
an emergency .......................... 526
If your vehicle needs to be towed
................................................. 529
If your vehicle overheats ............ 578
Emergency brake signal .............. 416
Emergency flashers ..................... 526
Emergency tire puncture repair kit
..................................................... 548
Energy monitor ............................. 226
Engine
Compartment ............................. 479
Exhaust gas precautions.............. 47
Hood .......................................... 476
How to start the hybrid system... 310
Identification number.................. 585
If the hybrid system will not start 568
If your vehicle has to be stopped in
an emergency .......................... 526
Overheating ............................... 578
Power switch .............................. 310
Engine coolantCapacity ..................................... 588
Checking .................................... 481
High coolant temperature warning
light .......................................... 535
Preparing and checking before win-
ter ............................................. 422
Warning light .............................. 535
Engine coolant temperature 187, 193
Engine oil
Capacity ..................................... 587
Checking .................................... 479
Preparing and checking before win-
ter ............................................. 422
Warning light .............................. 535
EPS (Electric Power Steering)
Function ..................................... 416
Warning light .............................. 536
EV/HV mode selection switch........ 86
EV driving range ........................... 103
EV mode ..........................................85
Exhaust gas precautions ............... 47
Extended Headlight Lighting system
..................................................... 327
F
Flat tire ................................... 548, 559
Tire pressure warning system .... 488
Floor mats ....................................... 32
Fluid
Brake .......................................... 590
Hybrid transmission.................... 589
Rear differential .......................... 589
Washer ....................................... 483
Fog lights
Replacing light bulbs ..................516
Switch......................................... 331
Footwell lights............................... 443
Front fog lights
Replacing light bulbs ..................516
Switch......................................... 331
Front passenger’s seat belt reminder

621Alphabetical Index
charge mode ................................. 85
Hybrid system
ACCESSORY mode .................. 313
Acoustic Vehicle Alerting System 92
Brake Override System .............. 289
Emergency shut off system.......... 99
Energy monitor/consumption screen
................................................. 226
High voltage components ............ 95
How to start the hybrid system... 310
Hybrid System Indicator ..... 187, 196
If the hybrid system will not start 568
If your vehicle has to be stopped in
an emergency .......................... 526
Ignition switch (power switch) .... 310
Overheating ............................... 578
Plug in Hybrid Electric Vehicle ... 100
Plug-in hybrid system precautions95
Power (ignition) switch ............... 310
Regenerative braking ................... 90
Starting the hybrid system ......... 310
Hybrid System Indicator ...... 187, 196
Hybrid transmission ..................... 315
I
Identification number
Engine ........................................ 585
Vehicle ....................................... 584
Ignition switch (power switch) .... 310
Auto power off function .............. 313
Changing the power switch modes
................................................. 313
If your vehicle has to be stopped in
an emergency .......................... 526
Starting the hybrid system ......... 310
Illuminated entry system ............. 443
Immobilizer system ........................ 77
Indicators ...................................... 180
Initialization
Items to initialize ........................ 609
Panoramic moon roof................. 283Power back door ........................ 248
Power windows .......................... 279
Tire pressure warning system .. 492,
493
Inside rear view mirror ......... 267, 268
Installing a child restraint system to
a front passenger seat ................. 52
Instrument cluster light control. 191,
199
Interior lights ................................. 443
Switch......................................... 444
Intrusion sensor.............................. 80
ISOFIX lower anchorages ..............63
J
Jack
Positioning a floor jack ............... 477
Vehicle-equipped jack ........ 549, 560
Jack handle ...........................549, 560
Jam protection function
Electronic sunshade ................... 283
Panoramic moon roof ................. 283
Power back door opener and closer
................................................. 246
Power windows .......................... 279
K
Keyless entry
Smart entry & start system ......... 253
Wireless remote control ............. 233
Keys ............................................... 232
Battery-saving function............... 254
Electronic key .............................232
If the electronic key does not operate
properly .................................... 571
If you lose your keys ..................570
Key number plate .......................232
Keyless entry...................... 233, 253
Mechanical key .......................... 234
Power switch .............................. 310

623Alphabetical Index
function) ................... 209, 221, 596
Display contents................. 199, 211
Driving information display . 201, 212
Driving support system information
display ............................. 204, 216
Dynamic radar cruise control with
full-speed range ....................... 368
Energy monitor........................... 226
Hybrid System Indicator ..... 190, 596
Language ........................... 208, 596
LTA (Lane-Tracing Assist) ......... 359
Menu icons................................. 200
Meter control switches ....... 200, 212
Navigation system-linked display
......................................... 204, 216
Parking Support Brake function . 405
PCS (Pre-Collision System) ....... 343
Pop-up display ................... 208, 595
RSA (Road Sign Assist) ............. 364
Settings .............................. 206, 217
Toyota parking assist-sensor ..... 395
Units ................................... 208, 220
Vehicle information display 204, 216
Warning message display .......... 209
Warning messages .................... 544
“My Room Mode” ......................... 164
N
Navigation system-linked display
............................................. 204, 216
Normal mode ................................ 411
O
Odometer .............................. 187, 199
“ODO TRIP” switch ............ 191, 199
Odometer and trip meter display
“ODO TRIP” switch ............ 187, 199
Display items...................... 187, 199
“ODO TRIP” switch .............. 191, 199
OilEngine oil ...................................587
Opener
Back door ...........................242, 244
Fuel filler door ............................ 337
Hood........................................... 476
Outer foot lights
Replacing light bulbs ..................516
Wattage ...................................... 591
Outside rear view mirrors ............277
Adjusting and folding ..................277
BSM (Blind Spot Monitor)........... 386
Outside rear view mirror defoggers
................................................. 432
Outside temperature............. 187, 193
Outside temperature display190, 198
Overheating ...................................578
P
Paddle shift switches ................... 317
Panoramic moon roof
Jam protection function .............. 283
Operation ...................................282
Warning message ...................... 284
Parking assist sensors (Toyota park-
ing assist-sensor) .......................395
Parking brake
Operation ...................................320
Parking brake engaged warning
buzzer ...................................... 322
Warning light .............................. 540
Warning message ...................... 322
Parking Support Brake (PKSB) ... 403
Indicator ..................................... 184
Parking Support Brake function
(rear-crossing vehicles)............410
Parking Support Brake function
(static objects) .......................... 407
Warning light .............................. 538
PCS (Pre-Collision System)
Enabling/disabling the pre-collision
system...................................... 346