Page 402 of 598
401
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U
June 19, 2008 12:54 pm
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
GS_U_G.book Page 401 Thursday, June 19, 2008 12:54 PM
Page 403 of 598

402
4-3. Do-it-yourself maintenance
GS_G_U
June 19, 2008 12:54 pm
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.
GS_U_G.book Page 402 Thursday, June 19, 2008 12:54 PM
Page 407 of 598
406
4-3. Do-it-yourself maintenance
GS_G_U
June 19, 2008 12:54 pm
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)
GS_U_G.book Page 406 Thursday, June 19, 2008 12:54 PM
Page 408 of 598
407
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U
June 19, 2008 12:54 pm
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)
GS_U_G.book Page 407 Thursday, June 19, 2008 12:54 PM
Page 410 of 598
409
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U
June 19, 2008 12:54 pm
■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 engine, wait
a few 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
GS_U_G.book Page 409 Thursday, June 19, 2008 12:54 PM
Page 411 of 598
410
4-3. Do-it-yourself maintenance
GS_G_U
June 19, 2008 12:54 pm
Wipe the dipstick and reinsert it fully.Low
Full
■ Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of
the same type as already in the
engine.
Make sure to check the oil type and prepare the items needed before
adding oil.
Remove the oil filler cap.
Add engine oil slowly, checking the dipstick.
Install the filler cap, turning it clockwise.STEP6
Oil gradeILSAC multigrade engine oil
Oil quantity
(Low → Full)1.6 qt. (1.5 L, 1.3 Imp. qt.)
ItemsClean funnel
STEP1
STEP2
STEP3
GS_U_G.book Page 410 Thursday, June 19, 2008 12:54 PM
Page 412 of 598
411
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U
June 19, 2008 12:54 pm
■Recommended viscosity
GS460
SAE 5W-20 or 0W-20 engine oil
may be used. However, SAE 0W-
20 is the best choice for good fuel
economy and good starting in cold
weather.
GS350 SAE 5W-30 is the best choice for
good fuel economy, and good
starting in cold weather.
If SAE 5W-30 oil is not available,SAE 10W-30 oil may be used.
However, it should be replaced
with SAE 5W-30 at the next oil
change.
■ How to read oil container labels
The ILSAC (International Lubricant Standardization and Approval
Committee) Certification Mark is added to some oil containers to help
you select the oil you should use.
Outside temperature
Outside temperature
GS_U_G.book Page 411 Thursday, June 19, 2008 12:54 PM
Page 413 of 598

412
4-3. Do-it-yourself maintenance
GS_G_U
June 19, 2008 12:54 pm
■Engine oil consumption
●The amount of engine oil consumed depends on the oil viscosity, the quality of
the oil and the way the vehicle is driven.
●More oil is consumed under driving conditions such as high speeds, frequent
acceleration and deceleration.
●A new engine consumes more oil.
●When judging the amount of oil consumption, keep in mind that the oil may
have become diluted, making it difficult to judge the true level accurately.
●Oil consumption: Max. 1.1 qt./600 miles, 0.9 lmp.qt./600 miles (1.0 L per 1000
km). If the vehicle consumes more than this amount, contact your Lexus dealer.
■Resetting the engine oil maintenance data (U.S.A. only)
Perform the following steps:Press the “DISP” switch ( →P. 140) to change the multi-information dis-
play to blank.
Turn the “ENGINE START STOP” switch to OFF.
Turn the “ENGINE START STOP” switch to IGNITION ON mode with
the trip meter reset button held down.
Keep pressing the button for longer than 7 seconds after the “ENGINE
START STOP” switch is in IGNITION ON mode.
STEP1
STEP2
STEP3
STEP4
After the above operation, the message
shown in the left will appear on the display.
The master warning light and tone will turn
on. After 5 seconds, the system reset is com-
pleted.
GS_U_G.book Page 412 Thursday, June 19, 2008 12:54 PM