service Lexus GS350 2008 Owner's Guide

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4-3. Do-it-yourself maintenance
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■When replacing wheels
The wheels of your Lexus are equipped with tire pressure warning valves and trans-
mitters that allow the tire pressure warning system to provide advanced warning in
the event of a loss in tire inflation pressure. Whenever wheels are replaced, the tire
pressure warning valves and transmitters must be installed. (→P. 422)
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire.
Doing so may result in an accident, causing death or serious injury.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Lexus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-
genuine wheels.
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6-1. Specifications
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Vehicle specifications
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■Lexus does not recommend gasoline containing MMT
Some gasoline contains octane enhancing additive called MMT (Methylcy clopen-
tadienyl Manganese Tricarbonyl).
Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con-
taining MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instrument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
NOTICE
■Notice on gasoline quality
●Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert-
ers causing the emission control system to malfunction.
●Do not use gasohol other than that stated here.
Other gasohol may cause fuel system damage or vehicle performance problems.
●Using unleaded gasoline with an octane number or rating lower than that stated
here will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■Fuel-related poor driveability
If after using a different type of fuel, poor driveability is encountered (poor hot start-
ing, vaporization, engine knocking, etc.), discontinue the use of that type of fuel.
■When refueling with gasohole
Take care not to spill gasohol. It can damage your vehicle’s paint.
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6-1. Specifications
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Vehicle specifications
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■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of
their use, however, and may depart sign ificantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■ Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire’s ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.
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589
Alphabetical index
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Parking brake ........................................... 131
Parking lightsReplacing light bulbs ....................... 470
Switch ........................................................ 142
Wattage ................................................. 552
Personal lights ....................................... 339
Power outlet ........................................... 353
Power windows.........................................64
Pre-collision system ..............................190
Radar cruise control ............................. 153
Radiator...................................................... 415
Radio ..........................................................229
Radio data system.................................. 231
Rear sunshade........................................357
Rear turn signal lights
Replacing light bulbs ....................... 470
Wattage ................................................. 552
Rear view monitor system .................. 179
Rear window defogger .......................225
Replacing Electronic key battery ..................... 440
Fuses .........................................................442
Light bulbs ............................................ 470
Reporting safety defects for U.S. owners ......................................... 578
Seat belts Adjusting the seat belt ....................... 53
Automatic locking retractor............ 55
Child restraint system installation ............................................102
Cleaning and maintaining the seat belts..................................... 392
Emergency locking retractor ......... 55
How to wear your seat belt............. 53 How your child should wear
the seat belt ..........................................56
Pre-collision seat belts .......................55
Pregnant women, proper seat belt use .........................55
Reminder light .................................... 490
Seat belt extenders ..............................56
Seat belt pretensioners ...................... 54
Seat heaters/ventilators.....................355
Seating capacity ..................................... 198
Seats Adjustment ............................................... 45
Adjustment precautions .................... 46
Child seats/child restraint
system installation............................ 102
Cleaning .................................................. 391
Driver’s seat position memory ....... 47
Head restraint ...........................................51
Properly sitting in the seat ................ 78
Seat heaters ..........................................354
Service reminder indicators ............. 136
Shift lever Automatic transmission ................... 125
If the shift lever cannot be shifted from “P” ................................ 524
Shift lock system .................................... 524
Shopping bag hooks............................360
Side airbags............................................... 80
Side marker lights Switch.........................................................142
Side mirror Adjusting and folding.......................... 62
Mirror position memory.................... 47P
R
S
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