2007 Lexus GS450h brake

247
3-3. Using the audio system
3
Interior features
Playing video CD
For safety reasons, you can enjoy the visual contents of discs only when the
vehicle is completely stopped with the power switch in “ACC” or “IG-ON”
mode and the parking brake applied. While you are driving, only audio con-
tents may be played.
■Video control screen
Press while the disc is playing, the following screen appears.
Return to video screen
Change screen mode ( P. 2 5 8 )

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4-2. Maintenance
4
Maintenance and care
General maintenance
Engine compartment
Luggage compartment
ItemsCheck points
Brake fluid• At the correct level? (P. 3 7 8 )
Engine/inverter coolant• At the correct level? ( P. 3 76 )
Engine oil• At the correct level? ( P. 3 7 1 )
Exhaust system• No fumes or strange sounds?
Radiator/condenser/hoses• Not blocked with foreign matter? 
( P. 3 7 7 )
Wa s h e r f l u i d• At the correct level? ( P. 3 8 2 )
ItemsCheck points
12 volt battery• Maintenance-free ( P. 3 7 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 recommend ed that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

360
4-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal• Moves smoothly (without uneven pedal effort or catching)?
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. 4 1 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?

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4
Maintenance and care
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. 3 7 9)
•Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( P. 3 7 8 )
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/inverter coolant level 
( P. 3 76 )
• “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)

368
4-3. Do-it-yourself maintenance
CAUTION
■When raising your vehicle
Make sure to observe the following to reduce the possibility of death or serious
injury.
●Do not put any part of your body or get underneath the vehicle supported only by
the jack.
Always use automotive jack stands or a solid, level, surface.
●Do not start the hybrid system while the vehicle is supported by the 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 jack properly at the jack point.
Raising the vehicle with an improperly positioned jack will damage the vehicle
and may cause the vehicle to fall off the 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
jack.

369
4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine compartment
■12 volt battery
P. 3 7 9
Engine oil level dipstick 
( P. 371)
Engine oil filler cap 
( P. 3 7 2 )
Brake fluid reservoir (P. 3 7 8 )
Fuse box ( P. 403)Washer fluid tank 
( P. 382)
Gasoline engine/inverter 
coolant reservoir ( P. 3 76 )
Electric cooling fans
Condenser ( P. 377)
Radiator ( P. 377)

378
4-3. Do-it-yourself maintenance
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
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.

379
4-3. Do-it-yourself maintenance
4
Maintenance and care
12 volt battery■ Location
The 12 volt battery is located in the
left-hand side of luggage compart-
ment.
■ Exterior
Make sure that the battery terminals are not corroded and that there
are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
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.