2014 Lexus GS350 traction control

GS350_OM_OM30D41U_(U)
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The SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with the airbags and seat belt pretensioners left
as they are, this may cause an accident such as fire. Be sure to have the systems of
the SRS airbag and seat belt pretensioner removed and disposed of by a qualified
service shop or by your Lexus deal er before you scrap your vehicle.
Special handling may apply, See www.dt sc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlorate. These components may
include airbag, seat belt pretensioners, and wireless remote control batteries.
Scrapping of your Lexus
Perchlorate Material
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, impa ir 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, ta lking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precaution 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 th emselves by playing with 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.

269
GS350_OM_OM30D41U_(U)4-5. Using the driving support systems
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Driving
Driving assist systems
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lo ck when the brakes are applied suddenly, or if
the brakes are applied while dri ving on a slippery road surface
◆Brake assist
Generates an increased level of br aking force after the brake pedal is
depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces
◆Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road
surfaces by controllin g steering performance.
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spin-
ning when starting the vehicle or accelerating on slippery roads
◆Hill-start assist control
P. 2 7 7
◆VGRS (Variable Gear Ratio Steering) (if equipped)
Adjusts the front wheel turning angl e in accordance with the vehicle
speed and steering wheel movement
To help enhance driving safety an d 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.

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GS350_OM_OM30D41U_(U)
8-1. Specifications
This information has been prepared in accordance with regulations issued
by the National Highway Traffic Safety Administration of the U.S. Depart-
ment 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 controlle d conditions on a specified govern-
ment 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 variations in
driving habits, service practices and differences in road characteristics and cli-
mate.
■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 sp ecified 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) traction.
Uniform Tire Quality Grading

841Alphabetical index
GS350_OM_OM30D41U_(U)
Tachometer ........................................ 81, 94
Tail lights.....................................................192Light switch ............................................ 192
Replacing light bulbs ....................... 687
Welcome light illumination control ................................................... 103
Talk switch
*............................................ 340
Telephone switches
*.......................... 496
Theft deterrent system Alarm........................................................... 72
Engine immobilizer system.............. 70
Tire inflation pressure ..........................775 Maintenance data .............................. 775
Tire inflation pressure display function ................................................... 87
Warning light ...................................... 706
Warning message ............................. 727
Tire information .......................................781 Glossary ................................................ 788
Size ............................................................784
Tire identification number..............783
Uniform Tire Quality Grading.............................................. 786
Tire pressure warning system ......... 644 Function ..................................................644
Initializing................................................644
Installing tire pressure warning valves and transmitters ................644
Registering ID codes ...................... 646
Tire pressure warning reset switch................................................... 645
Warning light ...................................... 706
Warning message .................. 727, 727 Tires ............................................................642
Chains .....................................................306
Checking ............................................... 642
If you have a flat tire .......................... 736
Inflation pressure................................ 775
Information..............................................781
Replacing ............................................... 736
Rotating tires ........................................ 643
Size ........................................................... 775
Snow tires ............................................. 308
Spare tire................................................ 736
Tire inflation pressure display function................................................... 87
Tire pressure warning system ..... 644
Warning light ....................................... 706
Warning message..............................727
Tools ........................................................... 737
Top tether strap ........................................66
Total load capacity................................. 170
Towing Dinghy towing ....................................... 172
Emergency towing ........................... 694
Towing eyelet ......................................695
Trailer towing........................................... 171
TRAC (Traction Control)..................269
Transmission ........................................... 180 Automatic transmission ................... 180
Driving mode select switch .......... 264
If the shift lever cannot be shifted from P ..................................... 751
M mode ................................................... 183
Paddle shift switches..........................182
Trip information ....................................... 85
Trip meters................................................... 81
T
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.