2006 Lexus GX470 airbag off

OCCUPANT RESTRAINT SYSTEMS
142
Seat belt pretensioners
The driver and front passenger’s seat belt pretensioners
are designed to be activated in response to a severe
frontal impact or a vehicle rollover.
When the sensor detects a severe frontal impact or a vehicle
rollover, the front seat belts are quickly drawn back by the
retractors so that the belts snugly restrain the occupants.
The front passenger’s seat belt pretensioner will not activate
if no passenger is detected in the front passenger seat by the
front passenger occupant classification system. However, the
front passenger’s seat belt pretensioner may activate if
luggage is put on the seat, or the seat belt is buckled up
regardless of the presence of an occupant in the seat. (As for
the front passenger occupant classification system, see page
168.)
The seat belt pretensioners and SRS airbags may not operate
together in case of collisions at a certain speeds and angles.
Roll sensing of curtain shield airbags off (RSCA OFF)
indicator light
The seat belt pretensioners will not operate in a vehicle rollover
if the “RSCA OFF” indicator light is on. For details, see “Rol\
l
sensing of curtain shield airbags off switch” on page 174.

OCCUPANT RESTRAINT SYSTEMS
144
Do not place luggage heavier than specified on the
roof luggage carrier. Such luggage may cause the
curtain shield airbags and seat belt pretensioners to
inflate accidentally, which could result in death or
serious injury. For details, see “Roof luggage
carrier” on page 107.
Failure to follow these instructions can result in death
or serious injury. Consult your Lexus dealer about any
repair and modification.
NOTICE
Do not perform any of the following changes without
consulting your Lexus dealer. Such changes can
interfere with proper operation of the seat belt
pretensioners in some cases.
 Installation of electronic devices such as a mobile
twoway radio, cassette tape player or CD 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 indicator comes on when the ignition key is turned to
the “ON” position. It goes off after about 6 seconds. This
means the 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, “AIRBAG ON”
indicator light, “AIRBAG OFF” indicator light, front passenger’s
seat belt buckle switch, seat belt pretensioner assemblies,
inflators, warning light, “RSCA OFF” indicator light,
interconnecting wiring and power sources. (For details, see
“Service reminder indicators and warning buzzers” on page
51.)

OCCUPANT RESTRAINT SYSTEMS
150
1Airbag module for front passenger
(airbag and inflator)
2Front passenger occupant classification system
(ECU and sensors)
3“AIRBAG ON” and “AIRBAG OFF” indicator lights
4SRS warning light
5Airbag module for driver (airbag and inflator)
6Driver’s seat position sensor
7Driver’s seat belt buckle switch
8Front passenger’s seat belt buckle switch
9Front airbag sensors
10Airbag sensor assembly
The SRS front airbag system consists mainly of the above
components, and their locations are shown in the illustration.
The airbag sensor assembly consists of a safing sensor and
airbag sensor.
The airbag sensors constantly monitor the forward
deceleration of the vehicle. If an impact results in a forward
deceleration beyond the designed threshold level, the system
triggers the airbag inflators. At this time a chemical reaction in
the inflators very quickly fills the airbags with non− toxic gas to
help restrain the forward motion of the occupants. The front
airbags then quickly deflate, so that there is no obstruction of
the driver’s vision should it be necessary to continue driving. When the airbags inflate, they produce a loud noise and
release some smoke and residue along with non
−toxic gas.
This does not indicate a fire. This smoke may remain inside the
vehicle for some time, and may cause some minor irritation to
the eyes, skin or breathing. Be sure to wash off any residue as
soon as possible to prevent any potential skin irritation with
soap and water. If you safely exit from the vehicle, you should
do so immediately.
Deployment of the airbags happens in a fraction of a second,
so the airbags must inflate with considerable force. While the
system is designed to reduce serious injuries, primarily to the
head and chest, it may also cause other, less severe injuries
to the face, chest, arms and hands. These are usually in the
nature of minor burns or abrasions and swelling, but the force
of a deploying airbag can cause more serious injuries,
especially if an occupant’s hands, arms, chest or head are in
close proximity to the airbag module at the time of deployment.
This is why it is important for the occupant to: avoid placing any
object or part of the body between the occupant and the airbag
module; sit straight and well back into the seat; wear the
available seat belt properly; and sit as far as possible from the
airbag module, while still maintaining control of the vehicle.
Parts of the airbag module (steering wheel hub, airbag cover
and inflator) may be hot for several minutes after deployment,
so do not touch! The airbags inflate only once. The windshield
may be damaged by absorbing some of the force of the
inflating airbag.

OCCUPANT RESTRAINT SYSTEMS
154
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 front 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 passenger occupant classification system, “AIRBAG ON”
indicator light, “AIRBAG OFF” indicator light, front passenger’s
seat belt buckle switch, seat belt pretensioner assemblies,
inflators, warning light, “RSCA OFF” indicator light,
interconnecting wiring and power sources. (For details, see
“Service reminder indicators and warning buzzers” on page
51.) If any of the following conditions occurs, this indicates a
malfunction of the airbags or seat belt pretensioners. Contact
your Lexus dealer as soon as possible.

The light does not come on when the ignition key is turned
to the “ON” position or remains on for more than 6 seconds
or flashes.
 The light comes on or starts flashing while driving.
The SRS warning light and “AIRBAG OFF” indicator light will
be illuminated if there is a malfunction in the front passenger
occupant classification system.

OCCUPANT RESTRAINT SYSTEMS
156
SRS SIDE AIRBAGS AND CURTAINSHIELD AIRBAGS
The SRS (Supplemental Restraint System) side airbags
and curtain shield airbags are designed to provide further
protection for the driver, front passenger and rear
outboard passengers in addition to the primary safety
protection provided by the seat belts.
In response to a severe side impact, the SRS side airbags and
curtain shield airbags work with the seat belts to help reduce
injury by inflating. The SRS side airbags help reduce injuries
mainly to the driver’s or front passenger’s torso and the SRS
curtain shield airbags help reduce injuries mainly to the
driver’s, front passenger’s or rear outboard passenger’s head. The SRS side airbag on the passenger seat will not activate if
there is no passenger sitting in the front passenger seat.
However,
the side airbag on the passenger seat may deploy if
luggage is put in the seat, or the seat belt is buckled up
regardless of the presence of the occupant in the seat. (As for
the front passenger occupan t classification system, see “Front
passenger occupant classification system” on page 168.)
Roll sensing function:
In response to a vehicle rollover, the curtain shield airbags on
both sides work with the seat belts to help reduce injury by
inflating. The curtain sh ield airbags help reduce injuries mainly
to the driver’s, front passenger’s or second passenger’s head
and help prevent them from being thrown out of the vehicle.
(This function can be turned off if inflation is not desired. See
“Roll sensing of curtain shield airbags off switch” on page 174.)
The SRS curtain shield airbag on the passenger side are
activated even with no passenger in the front seat or second
outboard seat.
The SRS curtain shield airbags may activate even when the
side airbags are not activated.
Always wear your seat belt properly.

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161

1Curtain shield airbag modules (airbag and inflator)
2Front passenger occupant classification system
(ECU and sensors)
3“AIRBAG ON” and “AIRBAG OFF” indicator lights
4Side airbag modules (airbag and inflator)
5Curtain shield airbag sensor assemblies
6SRS warning light and “RSCA OFF” indicator light
7Side and curtain shield airbag sensor assemblies
8Roll sensing of curtain shield airbags off switch
9Front passenger’s seat belt buckle switch
10Airbag sensor assembly
The SRS side airbag and curtain shield airbag system consists
mainly of the above components, and their locations are shown
in the illustration.
The SRS side airbag and curtain shield airbag system is
controlled by the airbag sensor assembly. The airbag sensor
assembly consists of a safing sensor and airbag sensor.
In a severe side impact, the side and curtain shield airbag
sensor and/or the curtain shield airbag sensor trigger(s) the
side airbag inflators and/or the curtain shield airbag inflators.
At this time a chemical reaction in the inflators quickly fills the
airbags with non −toxic gas to help restrain the lateral motion
of the occupants. In a vehicle rollover, the airbag sensor assembly triggers the
curtain shield airbag inflator.
At this time, a chemical reaction
in the inflators quickly fills the airbags with non −toxic gas to
help restrain the lateral motion of the occupants.
When the airbags inflate, they produce a fairly loud noise and
release some smoke and residue along with non −toxic gas.
This does not indicate a fire. This smoke may remain inside the
vehicle for some time, and may cause some minor irritation to
the eyes, skin or breathing. Be sure to wash off any residue as
soon as possible to prevent any potential skin irritation with
soap and water. If you can safely exit from the vehicle, you
should do so immediately.
Deployment of the airbags happens in a fraction of a second,
so the airbags must inflate with considerable force. While the
system is designed to reduce se rious injuries, it may also
cause minor burns or abrasions and swelling.
Front seats as well as parts of the front and rear pillars, and roof
side rail may be hot for several minutes, but the airbags
themselves will not be hot. The airbags are designed to inflate
only once.

OCCUPANT RESTRAINT SYSTEMS
163
Make sure the “RSCA OFF” indicator light is off. The
curtain shield airbags will not inflate in a vehicle
rollover if this indicator light is on and you may be
killed or seriously injured. For details, see “Roll
sensing of curtain shield airbags off switch” on page
174. Do not allow anyone to get his/her head closer to the
area where the side airbag and curtain shield airbag
inflate, since these airbags could inflate with
considerable speed and force. Otherwise, he/she
may be killed or seriously injured. Special care
should be taken especially when you have a small
child in the vehicle.
 Do not allow anyone to kneel on the passenger seat,
facing the passenger’s side door, since the side
airbag and curtain shield airbag could inflate with
considerable speed and force. Otherwise, he/she
may be killed or seriously injured. Special care
should be taken especially when you have a small
child in the vehicle.

OCCUPANT RESTRAINT SYSTEMS
166
Do not place luggage heavier than specified on the
roof luggage carrier. Such luggage may cause the
curtain shield airbags and seat belt pretensioners to
inflate accidentally, which could result in death or
serious injury. For details, see “Roof luggage
carrier” on page 107.
Failure to follow these instructions can result in death
or serious injury. Consult your Lexus dealer about any
repair and modification.
If you wish to modify your vehicle for a person with a
physical disability, consult your Lexus dealer. It may
dangerously interfere with the SRS side airbags and
curtain shield airbags operation.
NOTICE
Do not perform any of the following changes without
consulting your Lexus dealer. Such changes can
interfere with proper operation of the SRS side airbag
and curtain shield airbag system in some cases.
 Installation of electronic devices such as a mobile
twoway radio, cassette tape player or CD player
 Modification of the suspension system
 Modification of the structure of the passenger
compartment
 Repairs made on or near the console or front seat
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 side airbags and curtain shield 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 passenger occupant classification system, “AIRBAG ON”
indicator light, “AIRBAG OFF” indicator light, front passenger’s
seat belt buckle switch, front seat belt pretensioner
assemblies, inflators, warning light, “RSCA OFF” indicator
light, interconnecting wiring and power sources. (For details,
see “Service reminder indicators and warning buzzers” on
page 51 for instructions.)