2008 Lexus GX470 ECU

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5-1. Essential information
●Vehicle speed
● To what extent the accelerator pedal was depressed
● To what extent the brake pedal was applied
● To what extent the ECU controlled the condition of the 4 wheels
● Vehicle stability control system diagnostic data
The information abov e is intended to be used for the purpose of improv-
ing vehicle safety performance. Unlike general da ta recorders, the EDR
does not record sound data such as conversation between passengers.
Disclosure of the data
Lexus will not disclose the data re corded in an EDR to a third party
except when:
● An agreement from the vehicle’s ow ner (or the leasing company for a
leased vehicle) is obtained
● Officially requested by the police or other authorities
● Used as a defense for Lexus in a law suit
● Ordered by a court
However, if necessary Lexus will:
● Use the data for research on Le xus vehicle safety performance
● Disclose the data to a third party for research purposes without dis-
closing details of the vehicle owner, and only when it is deemed neces-
sary
● Disclose summarized data cleared of vehicle identification information
to a non-Lexus organization for research purposes

386
5-2. Steps to take in an emergency
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■Front passenger detection sensor and passenger seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash, even if a passenger is not sitting in
the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the following:
●The airbag sensor assembly
●Front airbag sensors
●The curtain shield airbag sensors
●The side and curtain shield airbag sensors
●The occupant detection sy stem (ECU and sensors)
●“AIR BAG ON” and “AIR BAG OFF” indicator lights
●The driver’s seat position sensor
●The driver’s seat belt buckle switch
●Front passenger’s seat belt buckle switch
●The inflators
●The warning light
●The interconnecting wiring and power sources

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5-2. Steps to take in an emergency
Taking out the jack and toolsJack Remove the jack compartment
cover and take out the jack.
To o l s Remove the tool tray compart-
ment cover and take out the tool
tray.
Jack handle Assemble the jack handle exten-
sion as shown. Be sure to tighten
each bolt securely.

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5-2. Steps to take in an emergency
Firmly tighten each nut two or
three times in the order shown in
the illustration.
Tightening torque:
83 ft•lbf (112 N•m, 11.5 kgf•m)
Reinstall the wheel ornament.
Stowing the flat/spare tire, jack and toolsLay down the tire with the outer
side facing up, and install the hold-
ing bracket.
Raise the tire.
Vehicles with kinetic dynamic su spension: Pull the tire towards
the rear of the vehicle when raising. After raising, visually check
that the tire is not interfering with suspension components.
Stow the tools and jack securely, and replace all covers.
STEP4
STEP5
STEP1
STEP5STEP2
STEP5STEP3

5
When trouble arises
399
5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or injuries due to the vehicle sud-
denly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Be sure to turn off the rear height co ntrol air suspension and stop the engine.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greate r than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
●Do not put any part of your body under the vehicle supported by a jack.
●Do not start or run the engine while your vehicle is supported by the jack.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Using the jack handle
Tighten all the jack handle bolts securely using a Phillips-head screwdriver, to pre-
vent the extension parts from coming apart unexpectedly.

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6-1. Specifications
Tire related termMeaning
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard
Reference Test Tire, when using the snow traction
test as described in ASTM F-1805-00, Standard
Test Method for Single Wheel Driving Traction in a
Straight Line on Snow-and Ice-Covered Surfaces,
and which is marked with an Alpine Symbol ( )
on at least one sidewall
Te s t r i mThe rim on which a tire is fitted for testing, and may
be any rim listed as appropriate for use with that tire
Tr e a dThat portion of a tire that comes into contact with the
road
Tr e a d r i bA tread section running circumferentially around a
tire
Tr e a d s e p a r a t i o nPulling away of the tread from the tire carcass
Treadwear indicators
(TWI)The projections within the principal grooves
designed to give a visual indication of the degrees of
wear of the tread
Wheel-holding fixtureThe fixture used to hold the wheel and tire assembly
securely during testing

446
Abbreviation list
Abbreviation/Acronym list
ABBREVIVATIONSMEANING
A/CAir Conditioning
ABSAnti-Lock Brake System
ACCAccessory
ALRAutomatic Locking Retractor
CALCalibration
CRSChild Restraint System
DACDownhill Assist control system
DISPDisplay
ECUElectronic Control Unit
EDREvent data recorder
ELREmergency Locking Retractor
GAWRGross Axle Weight Ratings
I/MEmission inspection and maintenance
INTIntermittent
KDSSKinetic Dynamic Suspension System
LEDLight Emitting Diode
LSDLimited Slip Differential
MMTMethylcy clopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics

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Alphabetical index
Rear window defogger ........................ 199
Rear window wiper and washer ........141
Replacing Fuses ........................................................ 355
Light bulbs ............................................ 365
Reporting safety defects for U.S. owners ..........................................442
Roof luggage carrier ............................168
Seat belts Adjusting the seat belt ........................49
Automatic Locking Retractor (ALR) .......................................................52
Child restraint system installation ............................................. 98
Cleaning and maintaining the seat belts..................................... 309
Emergency Locking Retractor (ELR) ........................................................52
How to wear your seat belt..............49
How your child should wear the seat belt.......................................... 53
Pregnant women,
proper seat belt use......................... 53
Reminder light.....................................385
Seat belt extenders .............................. 53
Seat belt pretensioners.......................52
Seat heaters............................................. 274
Seating capacity ..................................... 174 Seats
Seat adjustment ..................................... 34
Adjustment precautions ....................35
Child seats/child restraint system installation..............................98
Cleaning ................................................ 308
Driver’s seat position memory ....... 45
Folding up the third seat.................... 39
Head restraint ......................................... 47
Properly sitting in the seat ................ 75
Seat heaters .......................................... 274
Removing the third seat..................... 42
Tumbling the second seat ................ 37
Security indicator................................... 130
Service reminder indicators ............. 130
Shift lever If the shift lever cannot be shifted from P .................................. 403
Shift lock system ....................................403
Side airbags.................................................77
Side marker lights Switch........................................................ 135
Side mirror Adjusting and folding..........................59
Mirror position memory .................... 45
Spare tire Inflation pressure ................................. 419
Spark plug................................................. 416
Specifications .......................................... 412
Speedometer .......................................... 126
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