2012 Lexus GX460 engine

598
4-2. Maintenance
GX460_U.S.A. (OM60J00U)
General maintenance
Engine compartment
ItemsCheck points
BatteryCheck the indicator and
connections. (→P. 6 2 3 )
Brake fluidIs the brake fluid at the correct level?
(→ P. 6 1 9 )
Engine coolantIs the engine coolant at the correct
level? ( →P. 6 1 6 )
Engine oilIs the engine oil at the correct level?
(→ P. 611)
Exhaust systemThere should not be any fumes or
strange sounds.
Power steering fluidIs the power steering fluid at the
correct level? ( →P. 6 2 1 )
Radiator/condenser
The radiator and condenser should
be free from foreign objects.
( →P. 6 1 8 )
Wa s h e r f l u i dIs there sufficient washer fluid?
(→ P. 6 2 7 )
Listed below are the general maintenance items that should be performed
at the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommended that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

601
4-2. Maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
Vehicle exterior
ItemsCheck points
Doors• Do the doors operate smoothly?
Engine hood• Does the engine hood lock system work properly?
Fluid leaks
• There should not be any signs of fluid leakage after the vehicle has
been parked.
Ti r e
• Is the tire inflation pressure cor-rect?
• The tires should not be damaged or
excessively worn.
• Have the tires been rotated according to the maintenance
schedule?
• The wheel nuts should not be loose.
CAUTION
■If the engine is running
Turn off the engine and ensure that there is adequate ventilation before performing
maintenance checks.

604
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
ItemsParts and tools
Engine coolant level (→P. 6 1 6 )
• “Toyota Super Long Life Coolant”
or similar high quality ethylene gly-
col based non-silicate, non-amine,
non-nitrite and non-borate coolant
with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant”
is pre-mixed with 50 % coolant
and 50 % deionized water.
For Canada:
“Toyota Super Long Life Coolant”
is pre-mixed with 55 % coolant and
45 % deionized water.
• Funnel (used only for adding cool-
ant)
Engine oil level (→ P. 611)
• “Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)

606
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions:
■When working on the engine compartment
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
■When working near the electric cooling fans or radiator grille:
Be sure the “ENGINE START STOP” switch is off.
With the “ENGINE START STOP” switch in IGNITION ON mode, the electric
cooling fans may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. (→P. 6 1 8 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in your eyes.

607
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to
dirt in the air. Also a backfire could cause a fire in the engine compartment.

609
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
Engine compartment
Engine coolant reservoir(→P. 6 1 6 )
Engine oil level dipstick (→P. 6 1 1 )
Engine oil filler cap (→P. 6 1 2 )
Brake fluid reservoir (→P. 6 1 9 )Fuse box ( →P. 6 4 7 )
Battery ( →P. 623)
Radiator ( →P. 6 1 8 )
Condenser ( →P. 6 1 8 )
Electric cooling fan
Washer fluid tank ( →P. 6 2 7 )
Power steering fluid reservoir (→P. 621)

610
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
Engine compartment cover■ Removing the engine compartment cover
■ Installing the clips
NOTICE
■After installing an engine compartment cover
Make sure the cover is securely installed in its original position.

611
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
Engine oilWith the engine at operating temperature and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level ground. After warming up the engine
and turning it off, wait more than five minutes for the oil to drain
back into the bottom of the engine.
Holding a rag under the end, pull
the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the
oil level.
Wipe the dipstick and reinsert it fully. Low
Full
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