2008 Lexus GS350 engine

355
3-7. Other interior features
3
Interior features
GS_G_U
May 13, 2008 5:14 pm
CAUTION
■Burns
●Use caution when seating the following persons in a seat with the seat heater on
to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the disabled
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs,
cold remedies, etc.)
●Do not cover the seat with anything when using the seat heater. 
Using the seat heater with a blanket or cushion increases the temperature of the
seat and may lead to overheating.
NOTICE
■To prevent damage to the seat heaters/ventilators
Do not put heavy objects on the seat and do not stick sharp objects (needles, nails,
etc.) into the seat.
■To prevent 12 volt battery discharge
Turn the switches off when the engine is off.

357
3-7. Other interior features
3
Interior features
GS_G_U
May 13, 2008 5:14 pm
Rear sunshade (if equipped)
■The rear sunshade can be used when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■Reverse operation feature
To ensure adequate rear visibility, the sunshade automatically lowers when the shift
lever is shifted to “R”.
However, the rear sunshade is raised again if any of the following occurs:
●Shift the shift lever into “P”.
●The switch is pressed again.
●The shift lever is shifted out of “R”, and the vehicle reaches a speed of 9 mph (15
km/h).
If the engine is turned off when the rear sunshade has been lowered due to the
reverse operation feature, it will not be raised even when the engine is turned on
again and the vehicle reaches a speed of 9 mph (15 km/h). To raise the sunshade
again, press the switch.
■After the “ENGINE START STOP” switch is turned to OFF
The rear sunshade can be raised and lowered for approximately 1 minute.
The rear sunshade can be raised and lowered by pressing the switch shown
below.
Raise/lower

358
3-7. Other interior features
GS_G_U
May 13, 2008 5:14 pm
CAUTION
■When the rear sunshade is being raised or lowered
Do not place fingers or other objects in the fastener section or in the opening.
They may get caught, causing injury.
NOTICE
■To prevent 12 volt battery discharge
Do not operate the rear sunshade when the engine is off.
■To ensure normal operation of the sunshade
Observe the following precautions.
●Do not place excessive load on the motor or other components.
●Do not place objects where they may hi nder opening and closing operations.
●Do not attach items to the rear sunshade.
●Keep the opening clean and clear of obstructions.
●Do not operate the rear sunshade continuously over long periods of time.

374
3-7. Other interior features
GS_G_U
May 13, 2008 5:14 pm
Safety information for the Lexus Link System
Important! Read this information before using the Lexus Link System. ■Exposure to radio frequency signals
The Lexus Link System installed in your vehicle is a low power ratio trans-
mitter and receiver. When the “ENGINE START STOP” switch is in the
IGNITION ON mode, it receives and also sends radio frequency (RF)
signals. 
In August 1996, the Federal Communications Commission (FCC)
adopted RF exposure guidelines with safety levels for mobile wireless
phones. Those guidelines are consistent with the safety standards previ-
ously set by both U.S. and international standards bodies.
● ANSI (American National Standards Institute) C95.1 [1992]
● NCRP (National Council on Radi ation Protection and Measurement)
Report 86 [1986]
● ICNIRP (International Commission on Non-Ionizing Radiation Pro-
tection) [1996]
Those standards were based on comp rehensive and periodic evaluations
of the relevant scientific literature. Over 120 scientists, engineers, and
physicians from universities, government health agencies, and industry
reviewed the available body of resear ch to develop the ANSI Standard
(C95.1). 
The design of the Lexus Link System complies with the FCC guidelines in
addition to those standards.

Maintenance and care4
387
GS_G_U
May 13, 2008 5:14 pm
4-1. Maintenance and 
care .............................. 388
Cleaning and protecting 
the vehicle exterior............ 388
Cleaning and protecting 
the vehicle interior ............... 391 4-2. Maintenance .................. 394
Maintenance 
requirements........................ 394
General maintenance .......... 396
Emission inspection and 
maintenance (I/M) 
programs ............................... 399
4-3. Do-it-yourself 
maintenance ................ 400
Do-it-yourself service 
precautions ........................... 400
Hood .......................................... 403
Positioning a floor jack ......... 404
Engine compartment ........... 406
Tires............................................. 421
Tire inflation pressure............ 431
Wheels ...................................... 435
Air conditioning filter ........... 437
Electronic key battery.......... 440
Checking and replacing 
fuses ........................................ 442
Headlight aim .......................... 467
Light bulbs ................................ 470

395
4-2. Maintenance
4
Maintenance and care
GS_G_U
May 13, 2008 5:14 pm
■Allow inspection and repairs to be performed by a Lexus dealer
●Lexus technicians are well-trained specialists and are kept up to date with the
latest service information. They are well informed about the operations of all
systems on your vehicle.
●Keep a copy of the repair order. It proves that the maintenance that has been
performed is under warranty coverage. If any problem should arise while your
vehicle is under warranty, your Lexus de aler will promptly take care of it.
CAUTION
■Hazardous materials
●Engine exhaust, some of its constituents, and a wide variety of automobile com-
ponents contain or emit chemicals known to the State of California to cause can-
cer and birth defects and other reproductive harm. Work in a well ventilated area.
●Oils, fuels and fluids contained in vehicles as well as waste produced by compo-
nent wear contain or emit chemicals known to the State of California to cause
cancer and birth defects or other reproductive harm. Avoid exposure and wash
any affected area immediately.
●12 volt battery posts, terminals and related accessories contain lead and lead
compounds which are known to cause brain damage. Wash your hands after
handling. ( P. 4 1 7 )
●Used engine oil contains chemicals that have been shown to cause cancer in lab-
oratory animals. Avoid prolonged and repeated contact. Always protect your
skin by washing thorough ly with soap and water.

396
4-2. Maintenance
GS_G_U
May 13, 2008 5:14 pm
General maintenance
Engine compartment
ItemsCheck points
Brake fluid• At the correct level? (P. 4 1 6 )
Engine coolant• At the correct level? ( P. 4 1 4 )
Engine oil• At the correct level? ( P. 4 0 9 )
Exhaust system• No fumes or strange sounds?
Radiator/condenser/hoses• Not blocked with foreign matter? 
( P. 4 1 5 )
Wa s h e r f l u i d• At the correct level? ( P. 4 2 0 )
12 volt battery• Maintenance-free ( P. 4 1 7 )
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.

398
4-2. Maintenance
GS_G_U
May 13, 2008 5:14 pm
Vehicle exterior
ItemsCheck points
Doors/trunk• Operate smoothly?
Engine hood• The lock system works properly?
Fluid leaks• Is there any leakage after parking?
Ti r e
• Inflation pressure is correct?
• Tire surfaces not worn or dam-aged?
• Tires rotated according to the
maintenance schedule?
• Wheel nuts are not loose?
CAUTION
■If the engine is running
Turn off the engine and ensure that there is adequate ventilation before performing
maintenance checks.