2014 Lexus GX460 radiator cap

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GX460_OM_OM60K80U_(U)6-3. Do-it-yourself maintenance
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Maintenance and care
Engine compartment
Power steering fluid reservoir
(P. 4 5 9 )
Engine oil level dipstick (P. 4 5 3 )
Engine oil filler cap ( P. 4 5 4 )
Brake fluid reservoir ( P. 4 5 7 )
Fuse box ( P. 4 8 1 ) Battery
( P. 4 6 0 )
Radiator ( P. 4 5 7 )
Condenser ( P. 4 5 7 )
Cooling fans
Engine coolant reservoir (P. 4 5 5 )
Wa s h e r f l u i d t a n k ( P. 4 6 3 )1
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GX460_OM_OM60K80U_(U)6-3. Do-it-yourself maintenance
■Coolant selection
Only use “Toyota Super Long Life Coolant”
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50 % coolant and 50 % deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45% deion-
ized water. (Minimum temperature: -44 F [-42 C])
For more details about engine coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and water
pump. If you cannot find a leak, have your Le xus dealer test the cap and check for leaks in
the cooling system.
CAUTION
■When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to pr event it from damage to parts or paint.

5497-2. Steps to take in an emergency
GX460_OM_OM60K80U_(U)
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When trouble arises
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir. Reservoir
“F”
“L”
Radiator cap
Add coolant if necessary. ( P. 4 5 2 )
Water can be used in an emergency if
coolant is unavailable.
Start the engine and turn the air conditioning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are oper ating by checking the fan sound and air flow.
If it is difficult to check th ese, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
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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.

615Alphabetical index
GX460_OM_OM60K80U_(U)
Power outlet .............................................413
Power steering
Power windows ....................................... 142Jam protection function ................... 146
Operation ................................................142
Window lock switch...........................142
Pre-Collision System (PCS) ............ 357 Function ..................................................357
PCS OFF switch ............................... 358
Warning light ...................................... 508
Radiator .................................................... 457
Radio
*
Rear fog lights ........................................200 Switch...................................................... 200
Wattage ................................................. 563
Rear seat ..................................................... 117 Adjustment ............................................... 117
Rear turn signal lights .......................... 190 Replacing light bulbs ......................... 491
Turn signal lever .................................. 190
Wattage ................................................. 563
Rear view mirror Inside rear view mirror ......................137
Outside rear view mirrors .............. 139
Rear view monitor system ................ 243
Rear window defogger ....................... 381
Rear window wiper.............................. 207
Refueling ................................................... 210 Capacity ................................................ 556
Fuel types ....................................210, 556
Opening the fuel tank cap...............212 Replacing
Electronic key battery ..................... 479
Fuses ..........................................................481
Light bulbs.............................................486
Tires .......................................................... 527
Wireless remote control battery .................................................. 479
Reporting safety defects for U.S. owners .................................. 590
Reset the maintenance data .............. 441
Safety connect....................................... 428
Seat belts .................................................... 28 Adjusting the seat belt........................ 29
Automatic Locking Retractor ........ 30
Child restraint system installation ............................................. 56
Cleaning and maintaining the seat belt .......................................438
Emergency Locking Retractor................................................ 30
How to wear your seat belt............. 28
How your child should wear the seat belt .......................................... 30
Pregnant women, proper seat belt use........................... 31
Reminder light and buzzer .......... 509
Seat belt pretensioners...................... 29
Seat belt extender ................................ 30
SRS warning light .............................. 507
RS
*:For vehicles with a navigation system or a multimedia system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.