2007 Lexus GS350 engine

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine compartment cover
■Removing the cover
Front
Right-hand side
Left-hand side

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4-3. Do-it-yourself maintenance
■Installing the clips
Open
Insert
Press
Engine oil
With the engine at operating temperat ure and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level ground. A
fter 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 ou
t and check the
oil level.
STEP1
STEP2
GS430GS350
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
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Maintenance and care
Wipe the dipstick and reinsert it fully.Low
Full
■ A
dding engine oil
If the oil level is below or near the lo
w 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 until you hear a click.
STEP6
Oil gradeILSAC multigrade engine oil
Oil quantity
(Low  Full)1.6 qt. (1.5 L, 1.3 Imp. qt.)
ItemsClean funnel
GS430GS350
STEP1
STEP2
STEP3

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Maintenance and care
■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 and fre -
quent acceleration and deceleration.
●A new engine consumes more oil.
●When judging the amount of oil consumpt ion, 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 main tenance data (U.S.A. only)
Perform the following steps:
Press the “DISP” switch ( P. 114 ) to change the multi-information display
to blank.
Turn the engine swit ch to “
OFF” mode.
Turn the engine switch to “IG-ON” mode with the trip meter reset button
held down.
Keep pressing the button for longer than 7 seconds af
ter the engine
switch is in “IG-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.

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4-3. Do-it-yourself maintenance
CAUTION
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may cause skin
disorders such as inflammation or skin cancer, so care should be taken to avoid
prolonged and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dis-
pose of used oil and filters in househol d trash, in sewers or onto the ground.
Call your Lexus dealer, service station or auto parts store for information con-
cerning recycling or disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly retightened.

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4-3. Do-it-yourself maintenance
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Maintenance and care
Engine coolant
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
Reservoir cap
FULL
LOW
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, engine c ool
ant filler cap, radiator cap, drain cock
and water pump. 
If you cannot find a leak, have your Lexus dealer pressure test the cap and check for
le
aks in the cooling system.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or similar hig
h 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%
deionized water. (Enabled: -31 F [-35C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% de
ionized water. (Enabled: -44F [-42 C])
For more details about engine coolant, contact your Lexus dealer.

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4-3. Do-it-yourself maintenance
Radiator and condenser
Check the radiator and condenser and clear any foreign objects. 
If either of the above parts are extremely dirty or you are not sure of their
condition, ha
ve your vehicle checked by your Lexus dealer.
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 burns or other injuries.
NOTICE
■When adding the coolant
Coolant is neither plain water not straight antifreeze. The correct mixture of water
and anti freeze must be used to provide proper lubrication, corrosion protection
and cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it damage to parts or paint.
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 burns or other injuries.

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4-3. Do-it-yourself maintenance
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Maintenance and care
■Before recharging
When recharging, the battery produces hy
drogen gas which is flammable and
explosive. Therefore, before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the engine switch on the charger is off when connecting and discon -
necting the charger cables to the battery.
■After recharging/reconnecting the battery
In some cases, the engine may not start. Follow one or both of the following proce -
dures:
●After opening and closing the driver's do or, wait 10 seconds then attempt to
start the engine. (If the system does not start first time, repeat the procedure.)
●With the shift lever in “P” and the engi ne switch in the “OFF” mode, open and
close any door, then attempt to start the engine.
If the system will not start even after multip
le attempts at both methods, contact
your Lexus dealer.