2014 Lexus GX460 cooling

5507-2. Steps to take in an emergency
GX460_OM_OM60K80U_(U)
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 (especially a tie, a scarf or a muffler) away from the fans and
belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri-
ous injury.
●Do not loosen the radiator cap or the coolant reservoir cap while the engine and radi-
ator 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.

558
GX460_OM_OM60K80U_(U)8-1. Specifications
Cooling system
Capacity
(reference)With rear heater16.3 qt. (15.4 L, 13.6 Imp.qt.)
Without rear heater14.5 qt. (13.7 L, 12.1 Imp.qt.)
Coolant typeUse either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-basednon-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.

609Alphabetical index
GX460_OM_OM60K80U_(U)
Bottle holders ......................................... 399
BrakeFluid............................................................ 561
Parking brake.......................................... 191
Warning light ...................................... 507
Brake assist ...............................................341
Break-in tips............................................. 150
Brightness control Instrument panel light control ..................................................... 78
BSM (Blind Spot Monitor)................ 347
Care ................................................ 434, 437 Aluminum wheels ..............................434
Exterior....................................................434
Interior ..................................................... 437
Seat belts ............................................... 438
Cargo hooks .......................................... 402
Center differential................................ 332
CD player
*
Chains ....................................................... 366
Child restraint system............................ 52 Booster seats, definition ....................53
Booster seats, installation....................61
Convertible seats, definition ............ 53
Convertible seats, installation ............................................. 58
Installation with LATCH system ..................................................... 57
Installing CRS with seat belts ......... 58
Installing CRS with top straps..................................... 62 Infant seats, definition.......................... 53
Infant seats, installation....................... 58
Child safety .................................................. 51 Airbag precautions...............................37
Back door precautions...................... 101
Battery precautions ..............460, 547
Child restraint system......................... 52
Glass hatch precaution ................... 105
How your child should wear the seat belt .......................................... 30
Installing child restraints .................... 56
Moon roof precautions ....................148
Power window lock switch............. 142
Power window precautions ........... 144
Rear door child-protectors ............. 95
Removed key battery precautions ...................................... 480
Seat belt precautions ............................ 31
Seat heater precautions .................390
Child-protectors ..................................... 95
Cleaning Aluminum wheels .............................. 434
Exterior ................................................... 434
Interior ..................................................... 437
Seat belts................................................438
Coat hooks ............................................... 417
Compass ................................................... 419
Condenser...............................................457
Console box ........................................... 396
Cool box .................................................. 409
Cooling system ..................................... 455 Engine overheating ..........................548
Conversation mirror............................. 412
C
*:For vehicles with a navigation system or a multimedia system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.