2017 TOYOTA TUNDRA engine overheat

2344-5. Using the driving support systems
If the rear wheels spin, the slip
indicator flashes to indicate that
the AUTO LSD system has con-
trolled the spinning of the rear
wheels.
■If the engine is turned off and restarted
The AUTO LSD system and the indicators are automatically turned off.
■ If the brake system overheats
The AUTO LSD system will cease operation, and the slip indicator will
change from flashing to being on continuously to alert the driver. Stop the
vehicle in a safe place. (There is no problem with continuing normal driving.)
The system will be automatically restored after a short time.
When the AUTO LSD system is operating
CAUTION
■To avoid an accident
● Do not use the AUTO LSD system in conditions other than the above.
A much greater steering effort and more careful cornering control will be
required.
● Do not drive with the AUTO LSD system continuously turned on.

2404-5. Using the driving support systems
■Reactivation of the TRAC/VSC/A-T RAC/Trailer Sway Control systems
Even after the TRAC/VSC/A-TRAC/Trailer Sway Control systems have been
turned off, turning the engine switch off and then on again will automatically
reactivate the TRAC/VSC/A-TRAC/Trailer Sway Control systems.
■ Reactivation of the TRAC system linked to vehicle speed
When only the TRAC system is turned off, the TRAC system will turn on
when vehicle speed increases. However, when both TRAC/VSC systems are
turned off, the systems will not turn on even when vehicle speed increases.
■ If the brake system overheats
TRAC or A-TRAC will cease operation, and the slip indicator will change from
flashing to being on continuously to alert the driver. Stop the vehicle in a safe
place. (There is no problem with continuing normal driving.)
■ Shifting to “4L”
VSC and Trailer Sway Control are automatically turned off.
CAUTION
■The ABS does not operate effectively when
● The limits of tire gripping performance have been exceeded (such as
excessively worn tires on a snow covered road).
● The vehicle hydroplanes while driving at high speed on wet or slick roads.
■ Stopping distance when the ABS is operating may exceed that of nor-
mal 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 potholes or uneven surfaces
■ TRAC or A-TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC or A-TRAC system is operating.
Drive the vehicle carefully in conditions where stability and power may be
lost.

3616-1. Using the air conditioning system
6
Interior features
■Seat ventilators
Blows air from the seat Hi
Mid
Lo
Off
The level indicator lights come on.
Pressing the button changes
modes in the following:
Hi→Mid →Lo→Off
■The seat heaters/seat ventilators can be used when
The engine switch is in the “ON” position.
■ Passenger seat ventilator timer (vehicles with seat ventilators)
●The ventilator operates on for 5 minutes after the button is pressed.
● When the passenger is not detected, the automatically turns off the ventila-
tor after 5 minutes.
■ When not in use
Turn the seat heaters or seat ventilators off by pressing the button. The indi-
cator light turns off.
1
2
3
4
CAUTION
■Burns
● Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically 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.)
● Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
● Do not use seat heater more than necessary. Doing so may cause minor
burns or overheating.

465
8When trouble arises
8-1. Essential informationEmergency flashers .......... 466
If your vehicle has to be stopped in
an emergency ................. 467 8-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 468
If you think something is wrong .............................. 473
Fuel pump shut off system ............................ 474
If a warning light turns on or a warning buzzer
sounds ............................ 475
If a warning message is displayed......................... 482
If you have a flat tire.......... 486
If the engine will not start ................................. 501
If the vehicle battery is discharged ...................... 502
If your vehicle overheats ... 505
If the vehicle becomes stuck ............................... 507

505
8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( →P. 8 8 )
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle sp eed does not increase.)
● “ENGINE COOLANT OVERTEMP” is shown on the multi-informa-
tion display.
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning 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 sufficient ly, 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 “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
Radiator cap
The following may indicate that your vehicle is overheating:
Correction procedures
1
2
3
1
2
4
1
2
3
4

575Alphabetical index
Camper information ................ 562
Card holder .............................. 370
Care................................... 402, 404Aluminum wheels.................. 402
Exterior ................................. 402
Interior................................... 404
Seat belts .............................. 405
Cargo capacity ......................... 156
Cargo lamp Light switch ........................... 365
Replacing light bulbs............. 461
Wattage ................................ 528
CD player .................................. 275
Certification label ............ 161, 519
Chains....................................... 246
Child restraint system ............... 56
Booster seats, definition ......... 57
Booster seats, installation ....... 67
Convertible seats, definition.... 57
Convertible seats, installation ...................... 65, 66
Front passenger occupant
classification syst em............. 50
Infant seats, definition ............. 57
Infant seats, installation .......... 65
Installing CRS with LATCH anchors ............ 63
Installing CRS with seat
belts ...................................... 65
Installing CRS with top tether strap .............. 68
Child safety ................................ 55 Airbag precautions .................. 42
Battery precautions ............... 504
Child restraint system ............. 56 How your child should
wear the seat belt ................. 34
Installing child restraints ......... 60
Moon roof precautions .......... 143
Power back window
precautions......................... 140
Power window lock switch .... 134
Power window precautions ... 136
Rear door child-protector ...... 104
Removed wireless remote
control battery
precautions......................... 444
Seat belt extender
precautions........................... 37
Seat belt precautions .............. 59
Seat heater precautions ....... 361
Child-protectors ...................... 104
Cleaning ........................... 402, 404 Aluminum wheels ................. 402
Exterior ................................. 402
Interior .................................. 404
Seat belts.............................. 405
Clock......................................... 385
Compass .................................. 397
Condenser................................ 421
Console box ............................. 369
Consumption screen................. 91
Coolant ..................................... 419 Capacity................................ 523
Checking............................... 419
Preparing and checking before winter ...................... 245
Cooling system........................ 419 Engine overheating............... 505
CRS ............................................. 56
Cruise control .......................... 204
Cup holders ............................. 376
Curtain shield airbags............... 39
Customizable features ............ 543
C

576Alphabetical index
Daytime running light system .................................... 195
Deck hooks .............................. 383
Defogger Back window ................. 348, 355
Outside rear view mirrors ........................ 348, 355
Windshield .................... 348, 355
Differential ................................ 524
Dimensions .............................. 510
Dinghy towing .......................... 181
Display Multi-information display ......... 90
Trip information ....................... 91
Warning message ................. 482
Do-it-yourself maintenance .... 413
Doors ........................................ 100
Automatic door locking and unlocking system ......... 104
Door glasses ......................... 134
Door lock............................... 103
Open door warning light........ 476
Open door warning message ............................. 483
Outside rear view mirrors...... 130
Rear door child-protector ...... 104
Side doors............................. 100
Driver’s seat position
memory .................................. 116
Driving ...................................... 146 Break-in tips .......................... 147
Correct driving posture ........... 30
Driving assist system ............ 235
Procedures ........................... 146
Winter drive tips .................... 245 EDR (Event data recorder)........ 10
Emergency, in case of
If the engine will not start ...... 501
If the vehicle has discharged battery ................................ 502
If the warning buzzer sounds................................ 475
If the warning light turns on ....................................... 475
If the warning message
is displayed ........................ 482
If you have a flat tire ............. 486
If you lose your keys ............... 98
If you think something is wrong .............................. 473
If your vehicle becomes
stuck ................................... 507
If your vehicle has to be stopped in an emergency ... 467
If your vehicle needs to be towed......................... 468
If your vehicle overheats....... 505
Emergency flashers ................ 466
Engine “ACC” position ...................... 182
Compartment ........................ 416
Engine switch ....................... 182
Hood ..................................... 415
How to start the engine......... 182
Identification number ............ 519
If the engine will not start ...... 501
Ignition switch
(engine switch) ................... 182
Immobilizer system .. ............... 78
Overheating .......................... 505
DE

581Alphabetical index
Noise from under vehicle............ 8
Odometer.................................... 90
Off-road precautions ............... 249
Oil Engine oil .............................. 521
Differential oil ........................ 524
Transfer oil ............................ 525
Opener
Hood ..................................... 415
Outer foot lights Location ................................ 363
Replacing light bulbs............. 461
Wattage ................................ 528
Outside rear view mirrors ....... 130
Adjusting and folding ............ 130
Blind spot monitor ................. 222
Mirror position memory ......... 116
Outside rear view mirror defoggers ......... 348, 355
Outside temperature
display .................................... 386
Overhead console ................... 375
Overheating.............................. 505 Parking assist sensors
(intuitive parking assist)....... 207
Parking brake........................... 192 Operation .............................. 192
Parking brake engaged
warning buzzer ................... 475
Parking brake engaged
warning message ............... 483
Parking lights........................... 193 Light switch ........................... 193
Replacing light bulbs .... 453, 461
Wattage ................................ 528
Pen holder ................................ 373
Personal lights......................... 364
Light switch ........................... 364
Wattage ................................ 528
Power back window ................ 138
Power easy access system .... 116
Power outlets ........................... 387
Power steering fluid ................ 422
Power windows ....................... 134 Jam protection function ........ 135
Operation .............................. 134
Window lock switch .............. 134
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