2005 Lexus GX470 ECU

KEYS AND DOORS
29
THEFT DETERRENT SYSTEM
To deter theft of the vehicle, this system is designed to
sound an alarm if any of the doors or hood is forcibly
unlocked or the battery terminal is disconnected and then
reconnected while the vehicle is locked.
The alarm blows the horn intermittently and flashes the
headlights, tail lights and turn signal lights.
Further more when the center interior light switch and personal
light switch are in the ªDOORº position, the center interior light\
and personal lights turn on.

Security indicator light
Setting the system
1. Turn the ignition key to the ªLOCKº position and
remove it.
The engine immobilizer system causes the indicator light to
flash.
2. Close and lock all the doors and hood using an ignition
key or wireless remote control.
If you lock them with wireless remote control, the turn signals
flash once.
The flashing indicator light will remain on when all the doors
and hood are closed and locked.
3. After 30 seconds, the indicator starts flashing and the
system is set.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
66
(d) SRS Warning Light
The indicator comes on when the ignition key is turned to
the ªONº 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 passenger occupant classification system, ªAIRBAG ONº
indicator light, ªAIRBAG OFFº indicator light, front passenger's
seat belt buckle switch, front seat belt pretensioner
assemblies, inflators, warning light, ªRSCA OFFº indicator
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.
 The light does not come on when the ignition key is turned
to the ªONº position or remains on for more than 6 seconds
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 and/or front passenger occupant
classification system, ªAIRBAG ONº indicator light and
ªAIRBAG OFFº indicator light fail. If the light flashes, the side
and curtain shield airbags and/or seat belt pretensioners have
a problem.
(e) Malfunction Indicator Lamp
This lamp comes on when the ignition key is turned to the
ªONº position and goes off after the engine starts. This
means that the warn ing light system is operating properly.
If the lamp remains on, or the lamp comes on while driving,
first check the followings.
 Empty fuel tank
If the fuel tank is empty, refuel immediately.
 Loose fuel tank cap
If the fuel tank cap is loose, securely tighten it.
These cases are temporary malfunctions. The malfunction
indicator lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your
Lexus dealer as soon as possible.
If the fuel tank is not empty or the fuel tank cap is not
loose...
 There is a problem somewhere in the engine, emission
control system, electronic throttle control system, automatic
transmission electrical system or warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
If engine speed does not increase when the accelerator pedal
is depressed, there may be a problem somewhere in the
electronic throttle control system.

INTERIOR EQUIPMENT
98
GARAGE DOOR OPENER
The garage door opener (Universal
Transceiver) is manufactured under license from
HomeLink
 and can be programmed to operate garage
doors, gates, entry doors, door locks, home lighting
systems, and security systems, etc.
(a) Programming the HomeLink
1Indicator light2Buttons
The HomeLink in your vehicle has 3 buttons and you can
store one program for each button.
To ensure correct programming into the HomeLink
, install a
new battery in the hand±held transmitter prior to programming. The battery side of the hand±held transmitter must be pointed
away from the HomeLink
 during the programming process.
For Canadian users, follow the procedure in ªProgramming an
entrance gate/programming all devices in the Canadian
marketº.
1. Decide which of 3 HomeLink
 buttons you want to program.
2. Place your hand±held garage transmitter 25 to 75 mm (1 to
3 in.) away from the surface of the HomeLink
.
Keep the indicator light on the HomeLink
 in view while
programming.
3. Simultaneously press and hold the hand±held garage
transmitter button along with the selected HomeLink
 button.
4. When the indicator light on the HomeLink
 changes from a
slow to a rapid flash after 20 seconds, you can release both
buttons.
5. Test the operation of the HomeLink
 by pressing the newly
programmed button. If programming a garage door opener,
check to see if the garage door opens and closes.
If the garage door does not operate, identify if your garage
transmitter is of the ªRolling Codeº type. Press and hold the
programmed HomeLink
 button. The garage door has the
rolling code feature if the indicator light (on the HomeLink)
flashes rapidly and then remains lit after 2 seconds. If your
garage transmitter is the ªRolling Codeº type, proceed to the
heading ªProgramming a rolling code systemº.

INTERIOR EQUIPMENT
100
Programming an entrance gate/programming
all devices in the Canadian market
1. Decide which of the 3 HomeLink buttons you want to
program.
2. Place your hand±held gate/device transmitter 25 to 75 mm
(1 to 3 in.) away from the surface of the HomeLink
.
Keep the indicator light on the HomeLink
 in view while
programming.
3. Press and hold the selected HomeLink
 button.
4. Continuously press and release (cycle) the hand±held
gate/device transmitter button every two seconds until step 5
is complete.
5. When the indicator light on the HomeLink
 changes from a
slow to a rapid flash after 20 seconds, you can release both
buttons.
6. Test the operation of the HomeLink
 by pressing the newly
programmed button. Check to see if the gate/device operates
correctly.
7. Repeat steps 1 through 6 for each remaining HomeLink

button to program another device.
Programming other devices
To program other devices such as home security systems,
home door locks or lighting, contact your authorized Lexus
dealer for assistance.
Reprogramming a button
Individual HomeLink buttons cannot be erased, however, to
reprogram a single button, follow the procedure ªProgramming
the HomeLink
º.
(b) Operating the HomeLink
To operate the HomeLink, press the appropriate HomeLink
button to activate the programmed device. The HomeLink
indicator light should come on. The HomeLink continues to
send the signal for up to 20 seconds as long as the button is
pressed.

This device complies with Part 15 of the FCC Rules
and with RSS±210 of the IC Rules. Operation is
subject to the following two conditions.
(1) This device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
WARNING: This transmitter has been tested and
complies with FCC and IC rules. Changes or
modifications not expressly approved by the
party responsible for compliance could void the
user's authority to operate the device.
INTERIOR EQUIPMENT
102
CUPHOLDERS
Front
In front of the rear console box
To use the cupholder, push the cupholder lid.
The cupholder is designed for holding cups or drink±cans
securely.
The cupholder can be adjusted to the size of the cups by
changing the separator position or moving the separator arms.
You can use it as an accessory box by removing the separator
inside.

INTERIOR EQUIPMENT
103
In the rear console box
To use the cupholder, open the rear console box and pull
down the cupholder.
The cupholder is designed for holding cups or drink±cans
securely.
CAUTION
Do not place anything else other than cups or
drink±cans in the cupholder, as such items may be
thrown about in the compartment and possibly injure
people in the vehicle during sudden braking or in an
accident.
 To reduce the chance of injury in case of an accident
or sudden stop while driving, keep the cupholder
closed when not in use.
Rear
Second seat armrest
To use the cupholder, pull down the second seat armrest
and push the cupholder portion of the armrest.
The cupholder is designed for holding cups or drink±cans
securely.

INTERIOR EQUIPMENT
106
AUXILIARY BOX
To use the auxiliary box, open it as shown above.
CAUTION
To reduce the chance of injury in case of an accident or
a sudden stop, always keep the auxiliary box closed
while driving.
First aid kit holder
1To loosen2To tighten
This auxiliary box is equipped with a belt to hold the first
aid kit. To loosen or tighten the belt, do as shown above.
Although the first aid kit itself is not included as original
equipment, this auxiliary box can be used to store the first aid
kit.
Make sure the first aid kit is securely held.

INTERIOR EQUIPMENT
108
WARNING REFLECTOR HOLDER
1To disengage2To engage
This belt is designed to hold the warning reflector. To
disengage or engage the belt, do as shown above.
Although the warning reflector itself is not included as original
equipment, this auxiliary box can be used to store the warning
reflector.
Make sure the warning reflector is securely held.
COAT HOOKS
To use the coat hook, push the hook.
CAUTION
Do not hook a hanger, heavy or sharp pointed object on
the coat hook. If the curtain shield airbag inflates, those
items will be hurled away with great force or the curtain
shield airbag may not activate correctly. When you
hang clothes, hang them on the coat hook directly.