2015 TOYOTA TUNDRA overheating

892. Instrument cluster
2
Instrument cluster
The brightness of the instrument panel lights can be adjusted by turn-
ing the “ODO/TRIP” button.
Darker
Brighter
Instrument panel light control
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2
NOTICE
■To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (P. 497)

1514-1. Before driving
4
Driving
CAUTION
●Do not leave a door or window open if the curved glass is coated with a
metallized film such as a silver-colored one. Reflected sunlight may cause
the glass to act as a lens, causing a fire.
● Always apply the parking brake, shift the shift lever to P, stop the engine
and lock the vehicle.
Do not leave the vehicle unattended while the engine is running.
● Do not touch the exhaust pipes while the engine is running or immediately
after turning the engine off.
Doing so may cause burns.
● 4WD models: If the shift lever is moved before the “4LO” indicator turns
on/off, the transfer mode may not be shifted completely. The transfer mode
disengages both the front and rear driveshafts from the powertrain and
allows the vehicle to move regardless of the shift position. (At this time, the
indicator blinks and the buzzer sounds.)
Therefore, the vehicle is free to roll even if the automatic transmission is in
P. You or someone else could be seriously injured. You must complete the
shifting of the transfer mode. ( P. 225)
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an accident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicle, leading to
death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause
one side of the vehicle to brake differently than the other side. Also, the
parking brake may not securely hold the vehicle.
● If the power brake assist function does not operate, do not follow other\
vehicles closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will increase.
Have your brakes fixed immediately.
● Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
● The brake system consists of 2 individual hydraulic systems; if one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and the braking distance will
increase. Have your brakes fixed immediately.

1724-1. Before driving
●Avoid sudden braking as you may skid, resulting in the trailer jack-
knifing and a loss of vehicle contro l. This is especially true on wet or
slippery surfaces.
● Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before making
a turn.
● Note that when making a turn, the trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by making
a wider than normal turning radius.
● Slow down before making a turn, in crosswinds, on wet or slippery
surfaces, etc.
Increasing vehicle speed can destabilize the trailer.
● Take care when passing other vehicles. Passing requires consider-
able distance. After passing a vehicle, do not forget the length of
your trailer, and be sure you hav e plenty of room before changing
lanes.
● To maintain engine braking effici ency and charging system perfor-
mance when using engine braking, do not use the transmission in
D.
Transmission shift range position must be in 4 in the S mode.
● Instability happens more frequently when descending steep or long
downhill grades. Before descending, slow down and downshift. Do
not make sudden downshifts while descending steep or long down-
hill grades.
● Avoid holding the brake pedal down too long or applying the brakes
too frequently. This could cause th e brakes to overheat and result in
reduced braking efficiency.
● Due to the added load of the trailer, your vehicle’s engine may over-
heat on hot days (at temperatures over 85°F [30°C]) when driving
up a long or steep grade. If t he engine coolant temperature gauge
indicates overheating, immediately turn off the air conditioning (if in
use), pull your vehicle off the road and stop in a safe spot.
(  P. 497)

1874-2. Driving procedures
4
Driving
Parking brake
To set the parking brake, fully
depress the parking brake pedal
with your left foot while depress-
ing the brake pedal with your right
foot.
(Depressing the pedal again
releases the parking brake.)
■Usage in winter time
P. 241
U.S.A. Canada
NOTICE
■
Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to brake components
overheating, which may affect braking performance and increase brake
wear.

3516-1. 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.
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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.

497
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
system, 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
(radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact your
Toyota dealer.
The coolant level is satisfac-
tory 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
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2
3
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2
4
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567Alphabetical index
Power window precautions ... 136
Rear door child-protector ...... 104
Removed wireless remote control battery
precautions ......................... 434
Seat belt extender precautions ........................... 37
Seat belt precautions .............. 59
Seat heater precautions........ 351
Child-protectors....................... 104
Cleaning ........................... 392, 394
Aluminum wheels.................. 392
Exterior ................................. 392
Interior................................... 394
Seat belts .............................. 395
Clock ......................................... 375
Compass .................................. 387
Condenser ................................ 411
Console box ............................. 359
Consumption screen ................. 91
Coolant ..................................... 409 Capacity ................................ 514
Checking ............................... 409
Preparing and checking before winter....................... 240
Cooling system ........................ 409 Engine overheating ............... 497
CRS ............................................. 56
Cruise control .......................... 199
Cup holders.............................. 366
Curtain shield airbags ............... 39
Customizable features ............ 534
Daytime running light
system .................................... 190
Deck hooks .............................. 373
Defogger
Back window ................. 338, 345
Outside rear view mirrors ........................ 338, 345
Windshield .................... 338, 345
Differential ................................ 515 Dimensions .............................. 502
Dinghy towing.......................... 178
Display
Multi-information display ......... 90
Trip information....................... 91
Warning message................. 472
Do-it-yourself maintenance .... 403
Doors ........................................ 100
Automatic door locking and unlocking system......... 104
Door glasses......................... 134
Door lock .............................. 103
Open door warning light ....... 466
Open door warning message............................. 473
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 ............ 230
Procedures ........................... 146
Winter drive tips .................... 240
EDR (Event data recorder)........ 10
Emergency, in case of If the engine will not start ...... 491
If the shift lever
cannot be shifted from P .... 492
If the vehicle has discharged
battery ................................ 494
If the warning buzzer sounds................................ 465
If the warning light turns on ....................................... 465
If the warning message
is displayed ........................ 472
If you have a flat tire ............. 476
If you lose your keys ............... 98
D
E

568Alphabetical index
If you think something is wrong .............................. 463
If your vehicle becomes
stuck ................................... 499
If your vehicle has to be stopped in an emergency ... 457
If your vehicle needs
to be towed ......................... 458
If your vehicle overheats ....... 497
Emergency flashers ................ 456
Engine
“ACC” position ...................... 179
Compartment ........................ 406
Engine switch........................ 179
Hood ..................................... 405
How to start the engine ......... 179
Identification number ............ 510
If the engine will not start ...... 491
Ignition switch (engine switch) ................... 179
Immobilizer system ................. 78
Overheating .......................... 497
Engine coolant ......................... 409 Capacity ................................ 514
Checking ............................... 409
Preparing and checking before winter....................... 240
Engine coolant temperature
gauge........................................ 88
Engine immobilizer system ...... 78
Engine oil ................................. 407 Capacity ................................ 512
Checking ............................... 407
Preparing and checking before winter....................... 240
Engine oil maintenance data ......................................... 398
Engine switch (ignition switch)..................... 179
Engine switch light
(ignition switch light) ............ 353
Event data recorder (EDR) ........ 10 FFV.................................... 195, 520
Flat tire ..................................... 476
Flex-fuel............................ 195, 520
Flexible fuel vehicle ........ 195, 520
Floor mats .................................. 28
Fluid
Automatic transmission ........ 516
Brake .................................... 517
Washer ................................. 415
Fog lights ................................. 191
Replacing light bulbs ............ 446
Switch ................................... 191
Wattage ................................ 519
Foot well light .......................... 353
Four-wheel drive system ........ 225
Front passenger occupant classification system .............. 50
Front personal lights............... 354
Front seats ............................... 111 Adjustment............................ 111
Cleaning ............................... 394
Correct driving posture ........... 30
Driving position memory ....... 116
Head restraints ..................... 120
Power easy access system .......... ...................... 116
Seat heaters ......................... 350
Seat position memory ........... 116
Seat ventilators ..................... 350
Front side marker lights Light switch ........................... 188
Replacing light bulbs ............ 444
Wattage ................................ 519
Front turn signal lights
Replacing light bulbs ............ 443
Turn signal lever ................... 186
Wattage ................................ 519
Fuel ........................................... 511 Capacity................................ 511
Fuel gauge.............................. 88
Fuel pump shut off system ... 464
Gas station information......... 576F