2007 Lexus GS350 Using the front audio system / LEXUS 2007 GS430/350 OWNER'S MANUAL (OM30A04U)

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4-3. Do-it-yourself maintenance
4
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
4
Maintenance and care
Brake fluid
■Checking fluid level
The brake fluid lev
el should be
between the “MAX” and “MIN”
lines on the tank.
Make sure to check the fluid type and prepare the necessary items.
■ A
dding fluid
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel
■Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.
CAUTION
■When filling the reservoir
Take care because brake fluid can harm your hands or eyes and damage painted
surfaces. 
If fluid gets in your eyes, flush your eyes with clean water immediately.
If you still experience discomfort, see a doctor.

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4-3. Do-it-yourself maintenance
Battery
Check the battery as follows.
■B
attery exterior
Make sure that the battery terminals ar e not corr
oded and that there are
no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
■ Checking batter
y condition
Check the battery condition by the indicator color.
Blue: Good condition
White: Charging necessary.
Have the battery checked by
y
our Lexus dealer.
Red: Not working properly,
have the battery checked by
y
our Lexus dealer.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or
when the fluid level in the accumulator is high. 
If the reservoir needs frequent refilli ng, it may indicate a serious problem.

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4-3. Do-it-yourself maintenance
4
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.

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4-3. Do-it-yourself maintenance
CAUTION
■Chemicals in the battery
A battery contains poisonous and corrosive sulfuric acid and may produce hydro-
gen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near battery:
●Do not cause sparks by touching the battery terminals with tools.
●Do not smoke or light a match near the battery.
●Avoid contact with eyes, skin and clothes.
●Never inhale or swallow electrolyte.
●Wear protective safety glasses when working near the battery.
●Keep children away from the battery.
■Where to safety charge the battery
Always charge the battery in an open area. Do not charge the battery in a garage or
closed room where there is not sufficient ventilation.
■How to recharge the battery
Only perform a slow charge (5A or less). The battery may explode if charged at a
quicker rate.
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate medi-
cal attention. If possible, continue to apply water with a sponge or cloth while
traveling to the nearest medical facility.
●If electrolyte gets on your skin 
Wash the affected area thoroughly. If you feel pain or a burning sensation, seek
medical attention immediately.
●If electrolyte gets on your clothes 
It can soak through clothing on to your skin. Immediately take off the clothing and
follow the procedure above if necessary.
●If you accidentally swallow electrolyte 
Drink a large quantity of water or milk. Fo llow with milk of magnesia, beaten raw
egg or vegetable oil. Get emerge ncy medical attention immediately.