2012 Lexus GX460 service

634
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves and transmit-
ters and tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and
transmitter may be damaged if not handled correctly.
●When replacing tire valve caps, do not use tire valve caps other than those speci-
fied. The cap may become stuck.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified service shop as soon as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. ( →P. 6 2 9 )
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause losses in tire inflation pressure, reducing the cushion-
ing ability of the tires. In addition driving on rough roads may cause damage to the
tires themselves, as well as the vehicle’s wheels and body.
■If tire inflation pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

641
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
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.

734
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
NOTICE
■Do not drive the vehicle with a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.
■When stowing the flat tire
●Ensure that there is no object caught between the tire and the vehicle underbody.
●To avoid damaging the suspension system, make sure that the spare tire does not
interfere with the suspension components when stowed.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
■To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified service shop as soon as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. ( →P. 6 2 9 )

766
6-1. Specifications
GX460_U.S.A. (OM60J00U)
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your Lexus, be sure that it has an octane rating no lower
than 87.
●Lexus does not recommend the use of gasoline containing methanol.
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcy clo-
pentadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoli ne that contains MMT. If fuel contain-
ing MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the inst rument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
●Use only gasoline containing a maximum
of 10 % ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 10 % etha-
nol, including from any pump labeled E15,
E30, E50, E85 (which are only some
examples of fuel containing more than
10 % ethanol).
DO NOT use gasoline con-
taining more than 10 % etha-
nol.
(15 % ethanol)
(50 % ethanol)
(85 % ethanol)

772
6-1. Specifications
GX460_U.S.A. (OM60J00U)
Uniform Tire Quality Grading
This information has been prepared in accordance with regulations
issued by the National Highway Traffic Safety Administration of the U.S.
Department of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer any questions you may have as you read
this information.
■ 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. Performance may differ significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.

828
Alphabetical index
GX460_U.S.A. (OM60J00U)
SeatsAdjustment..............................63, 67, 78
Adjustment precautions .......................... 66, 76, 81
Child seats/child restraint system installation ............................. 151
Cleaning................................................. 593
Driver’s seat position memory....... 78
Folding down the second seatbacks ..................................... 69, 70
Folding down the third seats ........... 72
Head restraint......................................... 82
Properly sitting in the seat ...............120
Seat heaters ........................................... 551
Seat position memory ........................ 78
Ventilated seats ................................... 551
Service reminder indicators ............. 198
Shift lever Automatic transmission................... 186
If the shift lever cannot be shifted from P ....................................737
Shift lever lighting .................................. 519
Shift lock system .................................... 737
Side airbags.............................................. 122
Side marker lights Replacing light bulbs............667, 669
Switch ........................................................ 219
Wattage.................................................. 763 Side mirror
Adjusting and folding .......................... 97
Mirror position memory ....................78
Side turn signal lights
Replacing light bulbs ........................ 672
Smart access system with
push-button startAntenna location ................................... 32
Entry functions ........................................29
Starting the engine.............................. 179
Spare tire Inflation pressure ................................762
Storage location ...................................721
Spark plug ................................................757
Specifications ......................................... 752
Speedometer .......................................... 195
Steering Column lock release ......................... 183
Fluid ...........................................................762
Steering wheel
Adjustment ...............................................93
Audio switches ................................... 460
Heated steering wheel ................... 549
Steering wheel position memory ..................................................78
Stop light
Replacing light bulbs ........................ 672
Storage feature ..................................... 523
Stuck If your vehicle becomes stuck ..... 747
Sun visors .................................................538