2007 Lexus GX470 traction control

xix
Scrapping of your Lexus
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.
Leak detection pump (for the U.S.A. and Canada)
This pump performs fuel evaporation leakage check. This check is conducted sev-
eral hours after the engine is turned off. You may hear a sound coming from under-
neath the luggage compartment for several minutes, however this does not indicate
a malfunction.
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 will hurt or kill you, your occupants or others.
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 at tention 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.
■When children are in the vehicle
Never leave children unattended in the vehicle.
When left unattended, 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 vehi-
cle. In addition, heat build-up or extremel y cold temperatures inside the vehicle can
be fatal to children.

121
2-4. Using other driving systems
2
When driving
Four-wheel drive system
■The four-wheel drive control lever can be operated when
●The ignition switch is in the “ON” position,
●The shift lever is in the “N” position, and
●The vehicle is stopped completely.
Use the four-wheel drive control lever and center differential lock button
to select following transfer and center differential modes.
Four-wheel drive control lever“L” (low speed position)
Driving requiring maximum
power and traction such as
climbing or descending steep
hills, off-road driving and hard
pulling in sand or mud.
“N” (neutral position)
No power is delivered to the
wheels.
“H” (high speed position)
Normal driving on all types of
roads.
Center differential lock/unlock buttonUse this button when your vehi-
cle’s wheel gets stuck in a ditch
or when you are driving on a
loose or bumpy surface.

132
2-4. Using other driving systems
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)
Restrains the vehicle from slipping when driving on slick road surfaces or
in the event of sudden braking.
■BA (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.
■ Active traction control
Maintains drive power and prevents the 4 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.
■ LSD (Limited Slip Differential)
Transfers drive power to the rear tires when front tires spin, and vice versa,
in order to improve traction.
■KDSS (Kinetic Dynamic Suspension System) (if equipped)
KDSS helps to significantly enhance handling response by reducing roll
stiffness of the suspension stabilizer bars through means of a hydraulic
control system.

325
4-3. Do-it-yourself maintenance
4
Maintenance and care
FuseAmpereCircuit
25DOME10
Ignition switch light, interior lights,
personal lights, foot lights, running
board lights, door courtesy lights,
inside door handle lights, trip infor-
mation display
26RADIO NO.120Audio system, navigation system
27ECU-B10
Multiplex communication system,
vehicle stability control system, wire-
less remote control system, inside
rear view mirror, air conditioning sys-
tem, electronic modulated suspen-
sion, driving position memory system,
power windows, moon roof, rear view
monitor system
28ECU-B NO.210Theft deterrent system
29ABS MTR40
Anti-lock brake system, vehicle sta-
bility control system, active traction
control system, brake assist system
30AM230Starting system, IGN, SRS, GAUGE,
ST2
31ABS SOL30
Anti-lock brake system, vehicle sta-
bility control system, active traction
control system, brake assist system
32ALT-S7. 5Charging system
33MAYDAY7. 5Lexus Link System
34HORN10Horns

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4-3. Do-it-yourself maintenance
FuseAmpereCircuit
12IG1 NO.210
Rear air conditioning system, inside
rear view mirror, kinetic dynamic sus-
pension system
13RR WSH15Rear window washer
14ECU-IG10
Shift lock control system, power win-
dows, outside rear view mirror defog-
ger, anti-lock brake system, active
traction control system, vehicle stabil-
ity control system, air conditioning
system, navigation system, power
windows, moon roof, tilt and tele-
scopic steering, trip information dis-
play, driving position memory system,
rear view monitor system, tire pres-
sure warning system
15IG110
Air conditioning system, back-up
lights, rear window defogger, seat
heaters, vehicle stability control sys-
tem
16STA7. 5
Multiport fuel injection system/
sequential multiport fuel injection
system
17P FR P/W20Front passenger's power window
18P RR P/W20Rear right side power window
19D RR P/W20Rear left side power window
20PA N E L10Instrument panel lights
21TA I L10Parking lights, tail lights, license plate
lights, front fog lights

5
When trouble arises
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5-2. Steps to take in an emergency
Warning lightWarning light/Details
(U.S.A.)

(Canada)
ABS warning lightMalfunction in:
•The ABS; or
• The brake assist system.
VSC/TRAC warning lightMalfunction in:
• The VSC;
• The active traction control system;
• The downhill assist control system; or
• The hill-start assist control system.
Automatic transmission fluid temperature warning lightIndicates that the automatic transmission fluid temperature
is too high.
Unengaged “Park” warning lightMalfunction in the transmission “Park” mechanism.
(if equipped)
Kinetic dynamic suspension system warning lightMalfunction in the kinetic dynamic suspension system.

394
6-1. Specifications
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controll ed 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 de pends 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.
■ 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 condit ions 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 Mo tor 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.

406
Alphabetical index
Alphabetical index
A/C (Air conditioning system) ........ 162
ABS (Anti-lock Brake System) ........ 132
Active traction control......................... 132
Air conditioning system (A/C)Air conditioning filter .........................315
Automatic air conditioning system .................................................... 162
Airbags Airbag operating conditions........... 59
Airbag precautions for your child.......................................................... 64
Airbag warning light ........................348
Curtain shield airbag precautions .......................................... 66
General airbag precautions ........... 63
Locations of airbags............................ 56
Modification and disposal of airbags .................................................... 67
Side airbag precautions .................... 65
Side and curtain shield airbags operating conditions ....................... 59
SRS airbags ............................................. 56
Alarm ............................................................. 51
Antenna .......................................... 178, 269
Armrest ..................................................... 243
Ashtrays .................................................... 237
Audio system Antenna ....................................................178
CD player/changer ............................ 181
DVD information ...............................209
DVD player ..........................................200
DVD video/audio .............................205
MP3/WMA disc ................................ 188
Optimal use............................................194
Radio .......................................................... 173
Rear sear entertainment system ..................................................200 Steering switches ................................198
Video CD ................................................212
Automatic light control system............111
Automatic transmission ........................ 98
BA (Brake Assist)...................................132
Back door ...................................................... 11
Back-up lights Wattage ................................................. 386
Battery Battery .................................................... 299
Checking............................................... 299
If the vehicle battery is discharged ........................................ 370
Preparing and checking before winter...................................... 146
Brake Fluid .......................................................... 296
Parking brake........................................ 102
Care Exterior .................................................... 272
Interior...................................................... 274
Seat belts ................................................275
Cargo capacity....................................... 140
Cargo hooks .......................................... 245
CD player ................................................... 181
Center differential lock ......................... 121
Chains ......................................................... 147
Child-protectors..........................................7
Child restraint system (CRS) Definition ................................................... 74
Installation ................................................. 77
Installing CRS with lower anchorages ............................................ 81
Installing CRS with seatbelts ...........78A
B
C