2009 Lexus GS450h engine

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4-2. Maintenance
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
General maintenance
Engine compartment
Luggage compartment
ItemsCheck points
Brake fluid• At the correct level? (→P. 4 4 6 )
Engine/power control unit coolant• At the correct level? (→ P. 444)
Engine oil• At the correct level? (→P. 440)
Exhaust system• No fumes or strange sounds?
Radiator/condenser/hoses• Not blocked with foreign matter?
(→ P. 4 4 5 )
Wa s h e r f l u i d• At the correct level? ( →P. 4 5 1 )
ItemsCheck points
12 volt battery•Maintenance-free ( →P. 4 4 7 )
Listed below are the general maintenance items that should be performed
at the intervals specified in the “Warranty and Services Guide/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.
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4-2. Maintenance
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
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 hybrid system is operating
Turn off the hybrid system and ensure that there is adequate ventilation before per-
forming maintenance checks.
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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
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 4 7)
•Grease
•Conventional wrench
(for terminal clamp bolts)
Brake fluid level (→ P. 446)
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power control unit coolant
level ( →P. 444)
• “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
4
Maintenance and care
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
ItemsParts and tools
Engine oil level (→P. 4 4 0 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (→ P. 4 74 )• Fuse with same amperage rating as
original
Headlight aim ( →P. 4 8 9 )• Phillips-head screwdriver
Radiator and condenser (→P. 4 4 5 )
Tire inflation pressure (→ P. 4 6 2 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d (→P. 4 5 1 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel
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4-3. Do-it-yourself maintenance
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
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
●Make sure that the indicator on the “POWER” switch and the “READY” indicator
are both off.
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, power control unit, radiator, exhaust manifold,
etc. right after driving 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. Fuel fumes are flam-
mable.
■When working near the electric cooling fan or radiator grille
Be sure the “POWER” switch is OFF.
With the “POWER” switch in 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 4 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
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Engine compartment
■12 volt battery
→P. 4 4 7
Engine oil level dipstick
(→P. 4 4 0 )
Engine oil filler cap (→P. 4 4 1 )
Brake fluid reservoir (→P. 4 4 6 )
Fuse box ( →P. 4 74 )Washer fluid tank
(→P. 4 5 1 )
Gasoline engine/power
control unit coolant
reservoir ( →P. 444)
Electric cooling fans
Condenser ( →P. 445)
Radiator ( →P. 445)
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4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Engine compartment cover■ Removing the cover
Front
Right-hand side
Left-hand side
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4-3. Do-it-yourself maintenance
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
■Installing the clips
Push up center portion
Insert
Press
Engine oil
With 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 turning off the hybrid sys-
tem, wait more than five minutes for the oil to drain back into the
bottom of the engine.
Hold a rag under the end and 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.
STEP1
STEP2
STEP3
STEP4
STEP5
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