2010 Lexus GS350 brake

438
4-2. Maintenance
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
General maintenance
Engine compartment
ItemsCheck points
Brake fluid• At the correct level? (P. 4 5 7 )
Engine coolant• At the correct level? (P. 4 5 5 )
Engine oil• At the correct level? (P. 4 5 1 )
Exhaust system• No fumes or strange sounds?
Radiator/condenser/hoses• Not blocked with foreign matter? 
(P. 4 5 7 )
Wa s h e r f l u i d• At the correct level? (P. 4 6 2 )
12 volt battery• Maintenance-free (P. 4 5 9 )
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.

439
4-2. Maintenance
4
Maintenance and care
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Vehicle interior
ItemsCheck points
Accelerator pedal• Moves smoothly (without uneven pedal
effort or catching)?
Automatic transmission
“Park” mechanism• Can the vehicle be hold securely on an
incline with the shift lever in “P”?
Brake pedal
• Moves smoothly?
• Does it have appropriate clearance and
correct amount of free play?
Brakes
• Pulls to one side when applied?
• Loss of brake effectiveness?
• Spongy feeling brake pedal?
• Pedal almost touches floor?
Head restraints• Move smoothly and lock securely?
Indicators/buzzers• Function properly?
Lights• Do all the lights come on?
• Headlights aimed correctly? (P. 5 0 9 )
Pa r k i n g b r a ke
• Moves smoothly?
• Can hold the vehicle securely on an
incline?
Seat belts
• Does the seat belt system operate
smoothly?
• Are the belts undamaged?
Seats• Do the seat controls operate properly?
Steering wheel
• Moves smoothly?
• Has correct free play?
• No strange noises?

442
GS_G_U (OM30C80U)
June 29, 2011 10:30 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.
ItemsPa r t s a n d t o o l s
12 volt battery condition (P. 4 5 9)
•Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level (P. 4 5 7 )
• 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 5 5 )
• “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)

447
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
CAUTION
■When raising your vehicle
Make sure to observe the following to reduce the possibility of death or serious
injury.
●When using a floor jack, follow the instructions of the manual provided with the
jack.
●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 floor jack and/or automotive jack stands on a solid, flat, 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.

448
4-3. Do-it-yourself maintenance
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Engine compartment
GS460
Engine oil level dipstick
(P. 4 5 1 )
Engine oil filler cap
(P. 4 5 2 )
Brake fluid reservoir
(P. 4 5 7 )
Fuse box (P. 4 8 4 )
Washer fluid tank (P. 4 6 2 )Engine coolant reservoir
(P. 455)
Electric cooling fans
Condenser (P. 4 5 7 )
Radiator (P. 4 5 7 )
Fuse box (P. 4 8 4 )
12 volt battery (P. 4 5 9 )

449
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
GS350
Engine oil level dipstick
(P. 4 5 1 )
Engine oil filler cap
(P. 4 5 2 )
Brake fluid reservoir
(P. 4 5 7 )
Fuse box (P. 4 8 4 )
Washer fluid tank (P. 4 6 2 )Engine coolant reservoir
(P. 455)
Electric cooling fans
Condenser (P. 4 5 7 )
Radiator (P. 4 5 7 )
Fuse box (P. 4 8 4 )
12 volt battery (P. 4 5 9 )

457
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
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, have your vehicle checked by your Lexus dealer.
Brake fluid
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Make sure to check the fluid type and prepare the necessary items.
■Adding fluid
CAUTION
■When the engine is hot
Do not touch the radiator or condenser, as they may be hot and you may be burned.
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel

458
4-3. Do-it-yourself maintenance
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
■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.
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 refilling, it may indicate a serious problem.