2008 Lexus GS350 engine

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4-2. Maintenance
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Vehicle exterior
ItemsCheck points
Doors/trunk• Operate smoothly?
Engine hood• The lock system works properly?
Fluid leaks• Is there any leakage after parking?
Ti r e
• Inflation pressure is correct?
• Tire surfaces not worn or dam-aged?
• Tires rotated according to the maintenance schedule?
• Wheel nuts are not loose?
CAUTION
■If the engine is running
Turn off the engine and ensure that there is adequate ventilation before performing
maintenance checks.
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4-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the correct proce-
dure given in these sections.
ItemsParts and tools
12 volt battery condition ( →P. 4 1 7)
•Grease
•Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( →P. 4 1 6 )
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level
(→ P. 4 1 4 )
• “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)
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4-3. Do-it-yourself maintenance
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Maintenance and care
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ItemsParts and tools
Engine oil level (→P. 4 0 9 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (→ P. 4 4 2 )• Fuse with same amperage rating as
original
Headlight aim ( →P. 4 6 7 )• Phillips-head screwdriver
Radiator and condenser (→P. 4 1 5 )
Tire inflation pressure ( →P. 4 3 1 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d ( →P. 4 2 0 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel
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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 12 volt battery.
Fuel and 12 volt battery fumes are flammable.
●Be extremely cautious when working on the 12 volt battery. It contains poisonous
and corrosive sulfuric acid.
■When working near the electric cooling fan 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 fan may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. (→P. 4 1 5 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in the eyes.
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.
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4-3. Do-it-yourself maintenance
4
Maintenance and care
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CAUTION
■When raising your vehicle
Make sure to observe the following to reduce the possibility of death or serious
injury.
●Do not use the jack that was supplied with your vehicle.
●Do not put any part of your body or get underneath the vehicle supported only by
the floor jack.
Always use automotive jack stands or a solid, level surface.
●Do not start the engine while the vehicle is supported by the floor jack.
●Stop the vehicle on level firm ground, firmly set the parking brake and put the shift
lever in “P”.
●Make sure to set the floor jack properly at the jack point.
Raising the vehicle with an improperly positioned floor jack will damage the vehi-
cle and may cause the vehicle to fall off the floor jack.
●Do not raise the vehicle while someone is in the vehicle.
●When raising the vehicle, do not place any objects on top of or underneath the
floor jack.
●Lift up the vehicle using a floor jack such as
the one shown in the illustration.
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Engine compartment
GS460
Engine oil level dipstick(→P. 4 0 9 )
Engine oil filler cap (→P. 4 1 0 )
Brake fluid reservoir (→P. 4 1 6 )
Fuse box ( →P. 4 4 2 )
Washer fluid tank (→P. 4 2 0 )Engine coolant reservoir
(→P. 4 1 4 )
Electric cooling fans
Condenser ( →P. 415)
Radiator ( →P. 415)
Fuse box ( →P. 4 4 2 )
12 volt battery ( →P. 417)
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4-3. Do-it-yourself maintenance
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Maintenance and care
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GS350
Engine oil level dipstick(→P. 4 0 9 )
Engine oil filler cap (→P. 4 1 0 )
Brake fluid reservoir (→P. 4 1 6 )
Fuse box ( →P. 4 4 2 )
Washer fluid tank (→P. 4 2 0 )Engine coolant reservoir
(→P. 4 1 4 )
Electric cooling fans
Condenser ( →P. 415)
Radiator ( →P. 415)
Fuse box ( →P. 4 4 2 )
12 volt battery ( →P. 417)
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4-3. Do-it-yourself maintenance
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Engine compartment cover■ Removing the cover
Front
Right-hand side
Left-hand side
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