belt Lexus GS300 2003 Comfort Adjustment

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1Front airbag sensor
2Front seat belt pretensioner assembly
3SRS warning light
4Airbag sensor assembly
5Occupant detection sensor
6Seat belt buckle switch
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.
CAUTION
Do not modify, remove, strike or open the front seat belt
pretensioner assemblies, airbag sensor or surrounding
area or wiring. Doing any of these 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
two±way 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, front end
structure or console.
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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 pretensioners. Contact your Lexus dealer
as soon as possible to service the vehicle.
When the ignition key is turned to the ªONº 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
pretensioner.
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In the following cases, contact your Lexus dealer as soon as
possible.
The front of the vehicle (shaded in the illustration) were
involved in an accident that did not cause the front seat belt
pretensioners to operate.
Either front seat belt pretensioner assembly or surrounding
area is scratched, cracked, or otherwise damaged.

SRS AIRBAGS
The SRS (Supplemental Restraint System) airbags are
designed to provide further protection for the driver and
front passenger in addition to the primary safety
protection provided by the seat belts.
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Driver and front passenger airbags
In response to a severe frontal impact, the driver and front
passenger airbags work together with the seat belts to
help reduce injury by inflating. The driver and front
passenger airbags help to reduce injuries mainly to the
driver's or front passenger's head or chest directly hitting
the steering wheel or dashboard.
The front passenger airbag will not activate if there is no
passenger sitting in the front passenger seat. However, the
front passenger airbag 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.Your vehicle is equipped with a crash sensing and diagnostic
module, which will record the use of the seat belt restraint
system by the driver when the front airbags are inflated.
Be sure to wear your seat belt properly.
CAUTION
The driver or front passenger who is too close to the
steering wheel or dashboard during airbag deployment
can be killed or seriously injured. Lexus strongly
recommends that:
The driver sit as far back as possible from the
steering wheel while still maintaining control of the
vehicle.
The front passenger sit as far back as possible from
the dashboard.
All vehicle occupants be properly restrained using
the available seat belts.

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Side airbags
In response to a severe side impact, the side airbags for
the driver or front passenger work together with the seat
belts to help reduce injury by inflating. The side airbags
help to reduce injuries mainly to the driver's or front
passenger's chest.
The 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.
Your vehicle is equipped with a crash sensing and diagnostic
module, which will record the use of the seat belt restraint
system by the driver when the side airbags are inflated.
Be sure to wear your seat belt properly.
CAUTION
The side airbags inflate with considerable force. To
avoid potential death or serious injury when they inflate,
the driver and front passenger must:
Wear their seat belts properly.
Remain properly seated with their back upright and
against the seat at all times.
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Curtain shield airbags
In response to a severe side impact, the curtain shield
airbags for the driver or front passenger work together
with the seat belts by inflating to help reduce injury mainly
to the driver's or front passenger's head.
The curtain shield airbag is activated even with no passenger
in the front seat.
Be sure to wear your seat belt properly.

Your vehicle is equipped with a crash sensing and diagnostic
module, which will record the use of the seat belt restraint
system by the driver when the curtain shield airbags are
inflated.
CAUTION
The curtain shield airbags inflate with considerable
force. To avoid potential death or serious injury when
they inflate, the driver and front passenger must:
Wear their seat belts properly.
Remain properly seated with their back upright and
against the seat at all times.
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The indicator comes on when the ignition key is turned to
the ºONº 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
sensors, occupant detection sensor, seat belt buckle switch,
front seat belt pretensioner assemblies, inflators, warning light,
interconnecting wiring and power sources. (For details, see
ºService reminder indicators and warning buzzersº on page
40.)
The 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.
The front airbags will work if the severity of the impact is above
the designed threshold level, comparable to an approximate
25 km/h (15 mph) collision in the U.S.A. and 30 km (18 mph)
collision in Canada when the vehicle has the impact straight
into a fixed barrier that does not move or deform.

However, this threshold velocity will be considerably higher if
the vehicle strikes an object, such as a parked vehicle or sign
pole, which can move or deform on impact, or if the vehicle is
involved in an underride collision (e.g. a collision in which the
front of the vehicle ºunderridesº, or goes under, the bed of a
truck, etc.).
It is possible that in some collisions where the forward
deceleration of the vehicle is very close to the designed
threshold level, the SRS airbags and the seat belt
pretensioners may not activate together.
For the safety of all occupants, always wear your seat belts
properly.
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1Collision from the side 2Collision from the rear
3Vehicle rollover
The front airbags are generally not designed to inflate if
the vehicle is involved in a side or rear collision, if it rolls
over, or if it is involved in a low±speed frontal collision.
But, whenever a collision of any type causes sufficient
forward deceleration of the vehicle, deployment of the
front airbags may occur.

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1Hitting a curb, edge of pavement or hard material
2Falling into or jumping over a deep hole
3Landing hard or vehicle falling
The SRS airbags may also deploy if a serious impact
occurs to the underside of your vehicle. Some examples
are shown in the illustration.
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1Side airbag module (airbag and inflator)
2Airbag module for front passenger
(airbag and inflator)
3Side and curtain shield airbag sensor assembly
4Airbag module for driver (airbag and inflator)
5SRS warning light
6Airbag sensor assembly
7Front airbag sensor
8Curtain shield airbag module (airbag and inflator)
9Occupant detection sensor
10Seat belt buckle switch
The SRS airbag system mainly consists of the above
components, and their locations are shown in the illustration.
The airbag sensor assembly consists of a safing sensor and
airbag sensors.

The front 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. In a severe side impact, the side
and curtain shield airbag sensor triggers the side and curtain
shield airbag inflator. At this time a chemical reaction in the
inflators very quickly fills the airbags with non±toxic gas to help
restrain the forward or lateral motion of the occupants. The
airbags then quickly deflate, so that here 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 can physically and safely exit the
vehicle after a collision, you should do so at the first
opportunity.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 is 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.

CAUTION
The SRS airbag system is designed only as a
supplement to the primary protection of the driver
side and front passenger side seat belt systems. The
front seat occupants can be killed or seriously
injured by the inflating airbags if they do not wear the
available seat belts properly. During sudden braking
just before a collision, an unrestrained driver or front
passenger can move forward into direct contact with
or close proximity to the airbag which may then
deploy during the collision. To ensure maximum
protection in an accident, the driver and all
passengers in the vehicle must wear their seat belts
properly. Wearing a seat belt properly during an
accident reduces the chances of death or serious
injury or being thrown out of the vehicle. For
instructions and precautions concerning the seat
belt system, see ºSeat beltsº on page 88.
Improperly seated and/or restrained infants and
children can be killed or seriously injured by the
deploying airbags. An infant or child who is too small
to use a seat belt should be properly secured using
a child restraint system. Lexus strongly
recommends that all infants and children be placed
in the rear seat of the vehicle and properly restrained.
The rear seat is the safest for infants and children.
For instructions concerning the installation of a child
restraint system, see ºChild restraintº on page 111 .
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Never put a rear±facing child restraint system on the
front passenger seat because the force of the rapid
inflation of the front passenger airbag can cause
death or serious injury to the child.

16G059±2

Move seat fully back
A forward±facing child restraint system should be
allowed to be put on the front passenger seat only
when it is unavoidable. Always move the seat as far
back as possible, because the force of the deploying
front passenger airbags could cause death or
serious injury to the child.
Do not allow the child to lean against the front door
or around the front door even if the child is seated in
a child restraint system. It is dangerous if the side
airbag and curtain shield airbag inflate, because the
impact could cause death or serious injury to the
child.
For instructions concerning the installation of a child
restraint system, see ºChild restraintº on page 111.
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Do not sit on the edge of the seat or lean against the
dashboard when the vehicle is in use, since the front
passenger airbags inflate with considerable speed
and force. Otherwise, you may be killed or seriously
injured. Sit up straight and well back in the seat, and
always use your seat belt properly.