wiring Lexus GX470 2003 Basic Functions / LEXUS 2003 GX470 OWNER'S MANUAL (OM60A45U)

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GAUGES, METERS AND SERVICE REMINDER INDICATORS
46
(c) Front Passenger’s Seat Belt ReminderLight
This light reminds you to buckle up the front passenger’s seat
belt.
Once the ignition key is turned to “ON” or “START”, the
reminder light flashes if a passenger sits in the front passenger
seat and does not fasten the seat belt. Unless the front
passenger fastens the belt, the light stays flashing.
If luggage or other load is placed on the front passenger seat,
depending on its weight and how it is placed on the seat,
built−in sensors in the seat cushion may detect the pressure,
causing the reminder light to come on.
(d) SRS Warning Light
The indicator comes on when the ignition key is turned to
the “ON” position. It goes off after about 6 seconds. This
means the SRS airbags and front seat belt pretensioners
are operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side and curtain shield airbag
sensor assemblies, curtain shield airbag sensor assemblies,
driver’s seat position sensor, driver’s seat belt buckle switch,
front seat belt pretensioner assemblies, inflators, warning light,
interconnecting wiring and power sources.
If either of the following conditions occurs, this indicates a
malfunction somewhere in the parts monitored by the warning
light system. Contact your Lexus dealer as soon as possible
to service the vehicle.
 When the ignition key is turned to the “ON” position, the light
does not come on, remains on or flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the driver and front
passenger airbags have a problem. If the light flashes, the side
and curtain shield airbags and/or seat belt pretensioners have
a problem.

COMFORT ADJUSTMENT
132
This indicator comes on when the ignition key is turned to
the “ON” position. It goes off after about 6 seconds. This
means the front seat belt pretensioners are operating
properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side and curtain shield airbag
sensor assemblies, curtain shield airbag sensor assemblies,
driver’s seat position sensor, driver’s seat belt buckle switch,
front seat belt pretensioner assemblies, inflators, warning light,
interconnecting wiring and power sources. (For details, see
“Service remi nder indicators and warning buzzers” on page 43
for instructions.) 1 Front airbag sensors

2 Seat belt pretensioner assemblies

3 SRS warning light

4 Airbag sensor assembly
The front seat belt pretensioner system consists mainly of the
above components, and their locations are shown in the
illustration.
The front seat belt pretensioners are controlled by the airbag
sensor assembly. The airbag sensor assembly consists of a
safing sensor and airbag sensor.
When the front seat belt pretensioners are activated, an
operating noise may be heard and a small amount of
smoke−like gas may be released. This gas is harmless and
does not indicate that a fire is occurring.
Once the front seat belt pretensioners have been activated, the
seat belt retractors remain locked.

COMFORT ADJUSTMENT
133
CAUTION
Do not modify, remove, strike or open the front seat belt
pretensioner assemblies, airbag sensor or surrounding
area or wiring. Doing so may cause sudden operation
of the front seat belt pretensioners or disable the
system, which could result in death or serious injury.
Failure to follow these instructions can result in death
or serious injury. Consult your Lexus dealer about any
repairs and modifications.
NOTICE
Do not perform any of the following changes without
consulting your Lexus dealer. Such changes can
interfere with proper operation of the front seat belt
pretensioners in some cases.
 Installation of electronic devices such as a mobile
twoway radio, cassette tape player or compact disc
player.
 Repairs on or near the front seat belt retractor
assemblies.
 Modification of the suspension system.
 Modification of the front end structure.
 Attachment of a grille guard (bull bar, kangaroo bar,
etc.), snowplow, winches or any other equipment to
the front end.
Repairs made on or near the front fenders, the front
end structure and console.
This front seat belt pretensioner system has a service reminder
indicator to inform the driver of operating problems. If any of
the following conditions occurs, this indicates a malfunction of
the airbags or pretensioners. Contact your Lexus dealer as
soon as possible to service the vehicle.
 When the ignition key is turned to the “ON” position, the light
does not come on or flashes.
 The light flashes while driving.
 If either front seat belt does not retract or cannot be pulled
out due to a malfunction or activation of the relevant front
seat belt pretensioner.

COMFORT ADJUSTMENT
137
CAUTION
The SRS curtain shield airbags inflate with considerable
force. To avoid potential death or serious injury when
they inflate, the driver, front passenger and second
outside passengers must:
Wear their seat belts properly.
 Remain properly seated with their back upright and
against the seat at all times.
The indicator comes on when the ignition key is turned to
the “ON” position. It goes off after about 6 seconds. This
means the SRS airbags are operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side and curtain shield airbag
sensor assemblies, curtain shield airbag sensor assemblies,
driver’s seat position sensor, driver’s seat belt buckle switch,
front seat belt pretensioner assemblies, inflators, warning light,
interconnecting wiring and power sources. (For details, see
“Service reminder indicators and warning buzzers” on page 43
for instructions.)
The SRS front airbags are designed to deploy in severe
(usually frontal) collisions where the magnitude and
duration of the forward deceleration of the vehicle
exceeds the designed threshold level.

COMFORT ADJUSTMENT
148
Do not use seat accessories which cover the parts
where the side airbags inflate. Such accessories may
prevent the side airbags from activating correctly,
causing death or serious injury.
 Do not modify or remove any wiring. Do not modify,
remove, strike or open any components, such as the
steering wheel pad, steering wheel, column cover,
front passenger airbag cover or airbag sensor
assembly. Doing so may cause sudden front airbags
inflation or disable the system, which could result in
death or serious injury.
 Do not modify or replace the seats or upholstery of
front seats with side airbags. Such changes may
disable the system or cause the side airbags to inflate
accidentally, resulting in death or serious injury.
 Do not disassemble or repair the front pillars and roof
side rail containing the curtain shield airbags. Such
changes may disable the system or cause the curtain
shield airbags to inflate accidentally, resulting in
death or serious injury.
Failure to follow these instructions can result in death
or serious injury. Consult your Lexus dealer about any
repairs and modifications.NOTICE
Do not perform any of the following changes without
consulting your Lexus dealer. Such changes can
interfere with proper operation of the SRS in some
cases.
 Installation of electronic devices such as a mobile
twoway radio, cassette tape player or compact disc
player
 Modification of the suspension system
 Modification of the front end structure and side
structure of the passenger compartment
 Attachment of a grille guard (bull bar, kangaroo bar,
etc.), snowplow, winches or any other equipment to
the front end
 Repairs made on or near the front fenders, front end
structure, console, steering column, steering wheel,
dashboard near the front passenger airbag or front
seats

DRIVING TIPS
353
Trailer lights
 Socket for trailer lights
Your vehicle is equipped with a wire harness stored in the rear
end underbody. Models with weight carrying hitch receiver are
fitted with a socket for trailer lights under the rear bumper. Use
either of them to connect and operate the trailer lights.
However, the trailer lights must comply with federal,
state/provincial and local regulations. See your local
recreational vehicle dealer or rental agency for the correct type
of wiring and relays for your trailer. Check for correct operation
of the turn signals and stop lights each time you hitch up. Direct
splicing may damage your vehicle’s electrical system and
cause a malfunction of your lights.
Breakin schedule
Lexus recommends that you do not tow a trailer with a new
vehicle or a vehicle with any new power train component
(engine, transmission, differential, wheel bearing, etc.) for the
first 800 km (500 miles) of driving.
Maintenance
 If you tow a trailer, your vehicle will require more frequent
maintenance due to the additional load. For this
information, please refer to the scheduled maintenance
information in the “Owner’s Manual Supplement /
Scheduled Maintenance”.
 Retighten all fixing bolts of the towing ball and bracket after
approximately 1000 km (600 miles) of trailer driving.
Connecting a trailer
Stop your vehicle and a trailer in line and perform the following:
1. Put the rear height control air suspension in the “LO” (low)
mode. Turn the ignition switch off or push the “HEIGHT
CONTROL OFF” switch to turn off the rear height control air
suspension.
2. Connect a trailer.
3. Turn the ignition switch on or push the “HEIGHT CONTROL
OFF” switch to turn on the rear height control air suspension.
Select the “N” (normal) mode with the height select switch.
Disconnecting a trailer
Stop your vehicle and a trailer in line and perform the following:
1. Put the rear height control air suspension in the “LO” (low)
mode. (Make sure the vehicle height is in the “LO” (low) mode
by pushing the height select switch on the “
” side.)
2. Turn the ignition switch off or push the “HEIGHT CONTROL
OFF” switch to turn off the rear height control air suspension.

IN CASE OF AN EMERGENCY
384When the ignition is turned to the “ON” position, “The Lexus
Link System is active” is announced to inform you that the
system is on.
If your Lexus Link subscription expires, you will
hear “The Lexus Link System is not active. To activate your
Lexus Link System, press the “SERVICES” button now”. To
learn more about your subscription status or how to renew or
extend your subscription, please push the “SERVICES” button
to speak to a Lexus Link Advisor, or you may dial toll free
1−800−25 Lexus (Toll −Free) (1−800−255−3987) and select
the option for Lexus Link. If problems are detected in the Lexus
Link System, you will hear “A Lexus Link System error has
been detected. Please contact your Lexus dealer.” If you hear
this message, take your vehicle to your Lexus dealer.
In some cases, even if your subscription has expired, you may
hear “The Lexus Link System is active”. This is due to the time
delay required to process the deactivation of your Lexus Link
System. During this period, when you push the “SERVICES”
button, your call will be forwarded to enrollment. Once the
deactivation process has been completed, you will hear “The
Lexus Link System is not active”.
NOTICE
The voice prompt messages are the primary means to
let you know the status of your subscription. It is
important to be aware that an active subscription is
required to receive safety and security services. If these
voice prompt messages are disabled and you desire to
have them reactivated, contact your Lexus dealer.
When you push the “ − VOL +” button on the “−” side
immediately followed by the “PLAY” button, you can hear an
explanation about the Lexus Link System. However, this
function is not available when you are recording or hearing a
playback. See “Audible voice prompts” on page 390 for a
written version of this recorder message.
The basic subscriber service package is available free of
charge for the first year.
NOTICE
Do not remove the Lexus Link fuse and wiring harness
with the ignition on, or an emergency call will be placed
to the Lexus Link Call Center.

ELECTRICAL COMPONENTS
454If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge
type fuses. If any of the cartridge type fuses are
blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.
NOTICE
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.
CAUTION
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire even for
a temporary fix. This may cause extensive damage and
possibly a fire.
ADDING WASHER FLUID
If the washer tank becomes nearly empty, add washer
fluid.
You may use plain water as washer fluid. However, in cold
areas where temperatures range below the freezing point, use
washer fluid containing antifreeze. This product is available at
your Lexus dealer and most auto parts stores. Follow the
manufacturer’s directions for how much to mix with water.
NOTICE
Do not use engine antifreeze or any other substitute
because it may damage your vehicle’s paint.