2010 Lexus GS350 traction control

20
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol
and certain drugs delay reaction time, impair judgment and reduce coordination,
which could lead to an accident that could result in death or serious injury.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers
or pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to driving. Anything that distracts
the driver, such as adjusting controls, talking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precautions regarding children’s safety
Never leave children unattended in the vehicle, and never allow children to have or
use the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is
also a danger that children may injure themselves by playing with the cigarette
lighter, the windows, the moon roof, or other features of the vehicle. In addition, heat
build-up or extremely cold temperatures inside the vehicle can be fatal to children.

200
2-4. Using other driving systems
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Driving assist systems
To help enhance driving safety and performance, the following systems
operate automatically in response to various driving situations. Be aware,
however, that these systems are supplementary and should not be relied
upon too heavily when operating the vehicle.
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
■Brake assist
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
■Enhanced VSC (Enhanced Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■TRAC (Traction Control)
Helps to maintain drive power and prevent the rear wheels from spinning
when starting the vehicle or accelerating on slippery roads.
■Hill-start assist control
Helps prevent the vehicle from rolling backwards when starting on an
incline or slippery slope. It operates for approximately 5 seconds at maxi-
mum.
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel.
■Active stabilizer suspension system (if equipped)
Reduces sway when cornering according to steering wheel movement
and the selected suspension damping mode, in order to maintain a stable
vehicle posture.
■PCS (Pre-Collision System) (if equipped)
P. 2 0 7

609
6-1. Specifications
6
Vehicle specifications
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
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, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.

610
6-1. Specifications
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
■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.
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire’s resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.

631
Abbreviation list
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
ABBREVIATIONSMEANING
PCSPre-Collision System
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Monitoring (Warning) System
TRACTraction Control
VDIMVehicle Dynamics Integrated Management
VGRSVariable Gear Ratio Steering
VINVehicle Identification Number

639
Alphabetical index
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Tire information
Glossary ....................................................611
Size ........................................................... 607
Tire identification number .............606
Uniform Tire Quality Grading ...609
Tires
Chains ..................................................... 220
Checking ............................................... 463
Compact spare tire .......................... 557
If you have a flat tire............. 556, 566
Inflation pressure ...............................598
Information............................................ 604
Replacing............................................... 556
Rotating tires ........................................ 463
Size ...........................................................598
Snow tires............................................... 222
Tire pressure warning system..... 463
Tools .......................................................... 556
Total load capacity................................. 218
Touch screen ......................................... 228
Towing
Dinghy towing..................................... 225
Emergency towing ........................... 522
Trailer towing........................................224
Traction control .................................... 200
Trip meter.................................................. 147
Trunk
Opener...................................................... 48
Trunk light .................................................49
Wattage ................................................ 600
Turn signal lights
Replacing light bulbs ......................... 512
Switch ........................................................ 144
Wattage ................................................ 600Vanity lights
Vanity lights ..........................................394
Wattage ................................................. 600
Vanity mirrors ........................................ 394
Variable gear ratio steering .............. 201
Vehicle dynamics 
integrated management .................. 201
Vehicle identification number .........587
Vehicle load limits ................................. 218
Ventilators .............................................. 400
Warning buzzers
Brake system........................................534
Downshifting ..........................................142
Open door .......................................... 536
Seat belt reminder ............................ 536
Warning lights
Anti-lock brake system .................. 535
Brake system........................................534
Charging system................................534
Electric power steering 
warning light .................................... 535
Electronically 
controlled brake system ............ 535
Low fuel level ...................................... 536
Malfunction indicator lamp .......... 535
Master warning light.........................537
Open door ........................................... 536
Pre-collision system......................... 535
Seat belt reminder light.................. 536
SRS airbags.......................................... 535
Tire pressure warning light ...........537V
W