traction control Lexus IS250C 2010 Owner's Manual

10_IS250C/350C_U
21
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 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 themselves by playing with the cigarette
lighter, the windows, the retractable hardtop, or other features of the vehicle. In
addition, heat build-up or extremely cold temperatures inside the vehicle can be
fatal to children.

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2-4. Using other driving systems
10_IS250C/350C_U
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.
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■TRAC (Traction Control)
Maintains drive power and prevents the rear wheels from spinning when
starting the vehicle or accelerating on slippery roads.
■Hill-start assist control
→ P. 2 1 0
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel.

436
4-3. Do-it-yourself maintenance
10_IS250C/350C_U■
Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30 APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15 AOutside rear view mirror defoggers
4TV NO.110 ADisplay
5FUEL OPN10 AFuel filler door opener
6TV NO.27. 5 A
7TA I L10 ATail lights, license plate lights, parking
lights, side marker lights
8PA N E L7. 5 A
Air conditioning system, display,
clock, cigarette lighter, power steer-
ing, headlight cleaner, retractable
hardtop, ECT, ETCS, seat heaters and
ventilators, trunk opener, outside rear
view mirrors, shift lever light, traction
control, audio, instrument panel light
control
9RR FOG7. 5 A

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6-1. Specifications
6
Vehicle specifications
10_IS250C/350C_U■
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.

580
Alphabetical index
10_IS250C/350C_U
TachometerTacho indicator.................................... 159
Tachometer ........................................... 159
Tail lights
Switch ........................................................ 173
Talk switch ..................................................311
Telephone switch .....................................311
Theft deterrent system
Alarm .......................................................... 95
Engine immobilizer system ............. 93
Theft prevention labels .......................... 97
Tire inflation pressure .......................... 416
Tire information Glossary................................................ 550
Size ........................................................... 547
Tire identification number ............. 547
Uniform tire quality grading .........548
Tires
Chains ..................................................... 220
Checking ...............................................406
If you have a flat tire..........................486
Inflation pressure..................................416
Inflation pressure sensor................ 407
Information............................................545
Replacing...............................................486
Rotating tires ........................................406
Run-flat tire............................................495
Size ...........................................................536
Snow tires .............................................. 220
Spare tire................................................486
Tools ...........................................................486
Total load capacity ................................ 219 Towing
Dinghy towing ......................... 225, 226
Emergency towing ........................... 453
Trailer towing ....................................... 224
TRAC ........................................................ 204
Traction control..................................... 204
Transmission shift switches........ 149, 151
Trip meter ................................................. 159
Trunk Opener ...................................................... 47
Trunk light Trunk light ................................................ 48
Wattage ................................................... 541
Turn signal lights
Replacing light bulbs ........................444
Switch........................................................ 156
Wattage ................................................... 541
Vanity lights Vanity lights...........................................347
Wattage ................................................... 541
Vanity mirrors ........................................ 347
VDIM......................................................... 204
Vehicle dynamics integrated
management ....................................... 204
Vehicle identification number ......... 527
Vehicle stability control ..................... 204
Ventilators ............................................... 355
VSC ........................................................... 204T
V