Lexus IS300 2003 Basic Functions / LEXUS 2003 IS300 OWNER'S MANUAL (OM53439U)

COMFORT ADJUSTMENT
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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.
SV16061
The indicator comes on when the ignition key is turned to
the ºACCº or ºONº position. It goes off after about 6
seconds. This means the SRS airbags are operating
properly.
The SRS warning light system monitors the airbag sensor
assembly, front airbag sensors, side and curtain shield airbag
sensors, front seat belt pretensioner assemblies, inflators,
warning light, interconnecting wiring and power sources. (For
details, see ºService reminder indicators and warning buzzersº
on page 44.) 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.
The SRS 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 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
nose 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 front 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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COMFORT ADJUSTMENT
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SV16019

1Collision from the rear
2Vehicle rollover
The SRS front airbags are generally not designed to inflate
if the vehicle is involved in a 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 SRS front
airbags may occur.
The side and curtain shield airbags are designed to inflate
when the passenger compartment area suffers a severe
impact from the side.
SS16044

1Collision from the side at an angle
2Collision from the side to the vehicle body otherthan the passenger compartment
The side and curtain shield airbags may not inflate if the
vehicle is subjected to a collision from the side at certain
angles, or a collision to the side of the vehicle body other
than the passenger compartment as shown in the
illustration.
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COMFORT ADJUSTMENT
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SV16020

1Collision from the front
2Collision from the rear
3Vehicle rollover
The side and curtain shield airbags are not designed to
inflate if the vehicle is involved in a front or rear collision,
if it rolls over, or if it is involved in a low±speed side
collision.
SV16021

1Hitting a curb, edge of pavement or hard material
2Falling into or jumping over a deep hole
3Landing hard or vehicle falling
The SRS front 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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COMFORT ADJUSTMENT
131
SV16094

1Side airbag modules (airbag and inflator)
2Airbag module for front passenger (airbag and inflator)
3Side and curtain shield airbag sensors
4Airbag module for driver (airbag and inflator)
5SRS warning light
6Airbag sensor assembly
7Front airbag sensors
8Curtain shield airbag module (airbag and inflator)
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 driver and front passenger airbag sensors constantly
monitor the forward deceleration of the vehicle. In an impact
results in a forward deceleration beyond the designed
threshold level, the system triggers the front 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 or
lateral motion of the occupants. The 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 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 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 bet ween 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.
2003 IS300 from Aug. '02 Prod. (OM53439U)

COMFORT ADJUSTMENT
132Parts 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 bef ore 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 113.
 Improperly seated and/or restrained infants and
children can be killed or seriously injured by the
deploying ai rbags. 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 140.
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COMFORT ADJUSTMENT
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SV16023
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.
SV16053

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 airbag 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
and curtain shield airbags 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 140.
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SS16052
Do not sit on the edge of the seat or lean over the
dashboard when the vehicle is in use. When the front
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.
SV16025
 Do not lean against the front door when the vehicle
is in use. When the side and curtain shield airbag
inflates with considerable speed and force;
Otherwise, you may be killed or seriously injured.
Special care should be taken especially when you
have a small child in the vehicle.
 Sit up straight and well back in the seat, distributing
your weight evenly in the seat. Do not apply
excessive weight to the outer side of the front seats
on vehicles with side airbags.
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SV16124
Do not get your head closer to the area where the side
airbag and curtain shield airbag inflate, since these
airbags inflate with considerable speed and force.
Otherwise, you may be killed or seriously injured.
Special care should be taken especially when you
have a small child in the vehicle.
 Do not allow a child to kneel on the front passenger
seat facing the front passenger's side door when the
vehicle is in use, since the side and curtain shield
airbags inflate with considerable speed and impact.
Otherwise, the child may be killed or seriously in-
jured.
SS16056a
 Do not allow a child to stand up or to kneel on the
front passenger seat, since the front airbag inflates
with considerable speed and force. Otherwise, the
child may be killed or seriously injured.
 Do not hold a child on your lap or in your arms. Use
a child restraint system in the rear seat. For
instructions concerning the installation of a child
restraint system, see ºChild restraintº on page 140.
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SV16065
Do not put objects or your pets on or in front of the
dashboard or steering wheel pad that houses the
driver and front passenger airbag system. They
might restrict inflation or cause death or serious
injury as they are projected rearward by the force of
the deploying airbags. Likewise, the driver and front
passenger should not hold objects in their arms or on
their knees.
SV16096
 Do not attach a cup holder or any other device or
object on or around the door. When the side airbag
inflates, the cup holder or any other device or object
will be thrown with great force, or the side airbag may
not activate correctly, resulting in death or serious
injury. Likewise, the driver and front passenger
should not hold objects in their arms or on their
knees.
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SV16150
Do not attach a microphone or any other device or
object around the part where the curtain shield airbag
activates such as on the windshield glass, side door
glass and front and side pillar. When the curtain
shield airbag inflates, the microphone or other device
or object will be thrown with great force or the curtain
shield airbag may not activate correctly, resulting in
death or serious injury.
 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, front seats or airbag
sensor assembly. Doing so may cause sudden SRS
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 pillar and roof
side 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.
2003 IS300 from Aug. '02 Prod. (OM53439U)