2017 TOYOTA TUNDRA cooling

5068-2. Steps to take in an emergency
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine to check that the radiator cooling fan operates and
to check for coolant leaks from the radiator or hoses.
If the fan is not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan is operating:
Have the vehicle in spected at the nearest Toyota dealer.
5
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing away from the fans, etc., while the engine is run-
ning.
● Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust,
etc.).
● Do not use any coolant additives.
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7

5239-1. Specifications
9
Vehicle specifications
Cooling system
Capacity
1UR-FE
engine
Vehicles without towing package
11.4 qt. (10.8 L, 9.5 Imp.qt.)
Vehicles with towing package
12.6 qt. (11.9 L, 10.5 Imp.qt.)
3UR-FE,
3UR-FBE
enginesVehicles without towing package
11.4 qt. (10.8 L, 9.5 Imp.qt.)
Vehicles with towing package
12.4 qt. (11.7 L, 10.3 Imp.qt.)
Coolant typeUse either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO SK20HR11
Gap0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

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