2022 TOYOTA 4RUNNER engine overheat

3144-5. Using the driving support systems
4RUNNER (U)
If all wheels spin, the slip indicator
flashes to indicate that the active
traction control system has been
engaged.
■When the rear differential is locked (vehicles with a rear differential lock
system)
The active traction control system is activated only when vehicle speed is
less than 4 mph (6 km/h).
■ Sounds and vibrations caused by the active traction control sys tem
● A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound do es not indicate
that a malfunction has occurred in the system.
● Vibrations may be felt through the vehicle body and steering. T his may
occur when the system is operating.
■ If the brake system overheats
The system will cease operation and a buzzer will sound to alert the driver. At
this time, the “A-TRAC” indicator will go off and the “TRAC OFF ” indicator will
come on. Stop the vehicle in a safe place. (There is no problem with continu-
ing normal driving.)
The system will be automatically restored after a short time.
When the active traction co ntrol system is operating
WARNING
■The active traction control system may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the active traction control system is operating.
Do not drive the vehicle in conditions where stability and powe r may be lost.

3164-5. Using the driving support systems
4RUNNER (U)
If the drive wheels spin, the slip
indicator flashes to indicate that
the AUTO LSD system has con-
trolled the spinning of the drive
wheels.
■If the engine is turned off and restarted
The AUTO LSD system and the indicators are automatically turned off.
■ Reactivation of the VSC system linked to vehicle speed
When the AUTO LSD system is turned on, the VSC, TRAC and Traile r Sway
Control systems will turn on automatically if vehicle speed inc rease.
■ If the brake system overheats
The system will cease operation and a buzzer will alert the driver. At this time,
the “AUTO LSD” indicator will flash and the “TRAC OFF” indicator will come
on. Stop the vehicle in a safe place. (There is no problem with continuing nor-
mal driving.) The system will be automatically restored after a short time.
When the AUTO LSD system is operating
WARNING
■To avoid an accident
Failure to do so, a much greater steering effort and more careful cornering
control will be required.
● Do not use the AUTO LSD system in conditions other than when on e of
the drive wheels spinning occurs in a ditch or rough surface.
● Do not drive with the AUTO LSD system continuously turned on.
NOTICE
■Activating while driving
Do not activate the AUTO LSD system if the wheel is slipping.
Stop the slipping or spinning before activating.

3254-5. Using the driving support systems
4
Driving
4RUNNER (U)■
Automatic system cancelation
In the following situations, the system will cease operation an d a buzzer will
sound to alert the driver. The Cr awl Control indicator will flash until the system
is turned off completely.
● When the shift lever is shifted to P or N
● When the front-wheel drive control lever or switch is shifted to H4
● When the driver’s door is opened
● When the system is malfunctioning
● When the brake system overheats
Stop the vehicle in a safe place. (There is no problem with continuing normal
driving.)
● When the automatic transmission system overheats
Stop the vehicle in a safe place until the automatic transmission fluid tem-
perature warning light goes off.
■ Sounds and vibrations caused by the Crawl Control system
● A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound do es not indicate
that a malfunction has occurred in Crawl Control system.
● Either of the following conditions may occur when the Crawl Control system
is 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 after the vehicle comes to a stop.
■ When there is a malfunction in the system
Warning lights and/or warning messages will turn on. ( P. 486, 497)
WARNING
■When using Crawl Control
● Do not overly rely on Crawl Control. This function does not ext end the
vehicle’s performance limitations. Always check the terrain tho roughly and
drive safely.
● The recommended speed modes for the listed terrains ( P. 324) are only
a reference. The selected mode may not be suitable to actual off-road con-
ditions due to factors such as the type or unevenness of the te rrain or the
degree of incline. Check the actual terrain thoroughly and drive safely.
● After activating Crawl Control, make sure that the Crawl Control indicator
comes on. If the indicator flashes, the vehicle is not under system control.
■ Conditions under which the syst em may not operate correctly
When driving on the following surfaces, the system may not be able to
maintain a fixed low speed, which may result in an accident:
● Extremely steep inclines
● Extremely uneven surfaces
● Snow-covered roads, or other slippery surfaces

3675-1. Using the air conditioning system and defogger
5
Interior features
4RUNNER (U)
Seat heaters/seat ventilators
: If equipped
The seat heaters warm the seats and the seat ventilators main-
tain good airflow by blowing air through the seats.
WARNING
●Care should be taken to prevent injury if anyone in the following categories
comes in contact with the seats when the heater 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 (sleeping drugs, cold remedies, etc.)
● Observe the following precautions to prevent the minor burns or overheat-
ing
• 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 sea t and do
not stick sharp objects (needles, nails, etc.) into the seat.
● To prevent battery discharge, do not use the functions when the engine is
off.

473
When trouble arises7
4RUNNER (U)7-1. Essential information
Emergency flashers .......... 474
If your vehicle has to be stopped in
an emergency ................. 475
If the vehicle is submerged or water
on the road is rising ........ 477
7-2. Steps to take in an emergency
If your vehicle needs to be towed ..................... 478
If you think something is wrong .......................... 484
Fuel pump shut off system ............................ 485
If a warning light turns on or a warning
buzzer sounds ................ 486
If a warning message is displayed ..................... 497
If you have a flat tire.......... 502
If the engine will not start ................................. 517
If you cannot operate back door opener ............ 519
If the electronic key does not operate properly
(vehicles with a
smart key system) ........... 520
If the vehicle battery is discharged ................... 523
If your vehicle overheats ........................ 527
If the vehicle becomes stuck ............................... 530

5277-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
●The needle of the engine coolant temperature gauge ( P. 9 0 )
enters the red zone o r a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
● Steam comes out f rom under the hood.
Stop the vehicle in a safe place and turn off the air condition ing sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks. Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “F” and “L”
lines on the reservoir.Reservoir
“F” line
“L” line
Radiator cap
If your vehicle overheats
The following may indicate that your vehicle is overheating:
Correction procedures
1
2
3
1
2
4
1
2
3
4

593Alphabetical index
4RUNNER (U)
Child safety ................................ 54Airbag precautions .................. 39
Back door precautions .......... 132
Battery precautions ....... 431, 526
Child restraint system ............. 55
How your child should
wear the seat belt ................. 33
Installing child restraints ......... 59
Moon roof precautions .......... 172
Power window lock switch .... 161
Power window precautions ... 164
Rear door child-protectors .... 114
Removed electronic key battery precautions ...... 457
Seat belt extender precautions ........................... 36
Seat belt precautions .............. 58
Seat heater precautions........ 367
Child-protectors....................... 114
Cleaning ........................... 404, 408 Exterior ................................. 404
Interior................................... 408
Seat belts .............................. 409
Wheels and wheel ornaments .......................... 405
Clock ......................................... 385
Compass .................................... 94
Condenser ................................ 427
Console box ............................. 373
Cooling system Engine overheating ............... 527
Crawl Control ........................... 323
Cruise control Dynamic radar cruise control................................. 268
Cup holders.............................. 374
Curtain shield airbags ............... 37
Customizable features ............ 557 Daytime running light
system.................................... 226
Defogger Front windshield ................... 361
Outside rear view
mirrors ........................ 354, 361
Rear window ................. 354, 361
Dimension ................................ 532
Dinghy towing.......................... 206
Display Dynamic radar cruise control ................................ 268
LDA
(Lane Departure Alert) ....... 260
Multi-information display ......... 92
Trip information....................... 92
Warning message................. 497
Do-it-yourself maintenance .... 417
Door courtesy lights Wattage ................................ 541
Doors Automatic door locking
and unlocking system......... 115
Back door ............................. 130
Door lock ...................... 113, 131
Door windows ....................... 161
Open door warning buzzer ... 121
Open door warning light ....... 488
Outside rear view mirrors ..... 159
Rear door child-protector ...... 114
Side doors ............................ 110
Downhill assist control
system.................................... 320
Drive-Start Control .................. 175
Driver’s seat position memory .................................. 148D

594Alphabetical index
4RUNNER (U)
Driving ...................................... 174Break-in tips .......................... 176
Correct driving posture ........... 30
Driving assist systems .......... 333
Off-road precautions ............. 346
Procedures ........................... 174
Winter drive tips .................... 342
Dynamic radar cruise
control .................................... 268
Eco Driving Indicator .............. 100
EDR (Event data recorder) ........ 10
Electronic key .......................... 104 Battery-saving function ......... 122
If the electronic key does not operate properly ................. 520
Replacing the battery ............ 455
Emergency, in case of
If the electronic key does not operate
properly .............................. 520
If the engine will not start ...... 517
If the vehicle battery is discharged .......................... 523
If the warning buzzer sounds ................................ 486
If the warning light turns on ....................................... 486
If a warning message is displayed......................... 497
If the vehicle is submerged
or water on the road is
rising ................................... 477
If you cannot operate
back door opener ............... 519
If you have a flat tire ............. 502
If you think something is wrong .............................. 484
If your vehicle becomes stuck ................................... 530
If your vehicle has to be stopped in an emergency ... 475 If your vehicle needs
to be towed......................... 478
If your vehicle overheats....... 527
Emergency flashers ................ 474
Engine ACCESSORY mode ............. 211
Compartment ........................ 421
Engine switch ............... 207, 210
Hood ..................................... 420
How to start the engine ........................ 207, 210
Identification number ............ 533
If the engine will not start ...... 517
Ignition switch (engine switch) ........... 207, 210
Overheating .......................... 527
Engine coolant......................... 425
Capacity................................ 536
Checking............................... 425
Preparing and checking before winter ...................... 342
Engine coolant temperature gauge ....................................... 90
Engine immobilizer system ...... 78
Engine oil ................................. 423 Capacity................................ 535
Checking............................... 423
Preparing and checking before winter ...................... 342
Engine switch .................. 207, 210
Event data recorder (EDR)........ 10
Flat tire ..................................... 502
Floor mats .................................. 28
Fluid
Automatic transmission ........ 539
Brake .................................... 539
Power steering...................... 540
Washer ................................. 433
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