LEXUS LX470 2006 Owners Manual

OCCUPANT RESTRAINT SYSTEMS
149
16X500
 1Collision from the front
2Collision from the rear
3Pitching end over end
The SRS curtain shield airbags are not generally designed
to inflate if the vehicle is involved in a front or rear
collision, if it pitches end over end or if it is involved in a
lowspeed side collision.
16x24516X245
 1 Hitting a curb, edge of pavement or hard surface
2Falling into or jumping over a deep hole
3Landing hard or vehicle falling
The SRS side airbags and curtain shield airbags may
deploy if a serious impact occurs to the underside of your
vehicle. Some examples are shown in the illustration.

OCCUPANT RESTRAINT SYSTEMS
150
16x607c
 1Curtain shield airbag module (airbag and inflator)
2Side airbag module (airbag and inflator)
3Front passenger occupant classification
indicator light
4 Front passenger occupant classification system
(ECU and sensors)
5 SRS warning light
6Curtain shield airbag sensor assembly
7Side and curtain shield airbag sensor assembly
8Front passenger’s seat belt buckle switch
9Airbag 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 sensors. 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.
In a vehicle rollover, the airbag sensor assembly triggers the
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 front and
second seat occupants.
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 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, 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
151
CAUTION
SRS side airbags and curtain shield airbags inflate with
considerable force. To reduce the possibility of death
or serious injury when they inflate, the driver, front
passenger and rear outboard passengers must:
Wear their seat belts properly.
 Remain properly seated with their backs upright and
against the seats at all times.
16x520a
Do not allow anyone to lean against the door when
the vehicle is in use, 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.
 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 seats with a
side airbag,and to the front pillar, rear pillar, and roof
side rail with a curtain shield airbag.
 Improper sitting and wearing of the seat belts may
not retain you inside the vehicle.

OCCUPANT RESTRAINT SYSTEMS
152
16x503b
Make sure the roll sensing of curtain shield airbags
off indicator is not on. If this indicator light is on, the
curtain shield airbags will not inflate in a vehicle
rollover and you may be killed or seriously injured.
16x522a
Do not allow anyone to get his/her head close 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
153
16x509a
Do not allow anyone to get his/her head or hands out
of windows since the curtain shield 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.
16x613
 Do not attach a cupholder or any other device or
object on or around the door. When the side airbag
inflates, the cupholder 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.

OCCUPANT RESTRAINT SYSTEMS
154
16x512a
Do not attach a microphone or any other device or
object around the area where the curtain shield
airbag activates such as on the windshield glass,
side door glass, front, center and roof side garnish,
roof interior or assist grips. When the curtain shield
airbag inflates, the microphone or other device or
object will be thrown away with great force or the
curtain shield airbag may not activate correctly,
resulting in death or serious injury.
 Do not hook a hanger , heavy or sharp pointed objects
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,
which could result in death or serious injury. When
you hang clothes, hang them on the coat hook
directly.
 Do not use seat accessories which cover the parts
where the side airbags inflate. Su ch accessories may
prevent the side airbags from activating correctly,
causing death or serious injury.
 Do not modify or replace the seats or upholstery of
the seats with side airbags. Such changes may
prevent the side airbag system from activating
correctly disable the system or cause the side
airbags to inflate accidentally, resulting in death or
serious injury.
 Do not disassemble or repair the front and rear 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.
 Do not modify or change the suspension system.
Such changes may cause the curtain shield airbags
to inflate accidentally, which could result in death or
serious injury.
 Do not use tires or wheels other than the
manufacturer’s recommended size. Such a use may
cause the curtain shield airbags to inflate
accidentally, which could result in death or serious
injury. For details, see “Checking and replacing
tires” on page 438.
 Do not place luggage heavier than specified on the
roof luggage carrier. Such luggage may cause the
curtain shield airbags to inflate accidentally, which
could cause in death or serious injury. For details,
see “Roof luggage carrier” on page 88.

OCCUPANT RESTRAINT SYSTEMS
155
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 side structure of the passenger
compartment.
 Repairs made on or near the console, or front seats.
16x502a
This indicator comes on when the ignition switch 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 airba g 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 and indicator
light, front passenger’s seat belt buckle switch, seat belt
pretensioner assemblies, inflators, roll sensing of curtain
shield airbags off indicator light, interconnecting wiring and
power sources. (For details, see “Service reminder indicators
and warning buzzers” on page 52.)

OCCUPANT RESTRAINT SYSTEMS
156If 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 will come on and front passenger
occupant classification indicator light will indicate “OFF” if
there is a malfunction in the front passenger occupant
classification system.
16x608a

OCCUPANT RESTRAINT SYSTEMS
157
In the following cases, contact your Lexus dealer as soon as
possible:

Any of the SRS side airbags and curtain shield airbags have
been inflated.
 The portion of the doors (shaded in the illustration) were
involved in an accident that was not severe enough to cause
the SRS side airbags and curtain shield airbags to inflate.
 The surface of the seats with the side airbags (shaded in the
illustration) is scratched, cracked, or otherwise damaged.
 The portion of the front, center and rear pillar garnish, roof
interior containing the curtain shield airbags inside (shaded
in the illustration) is scratched, cracked, or otherwise
damaged.
NOTICE
Do not disconnect the battery cables before contacting
your Lexus dealer.
FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM
Your vehicle is equipped with a front passenger occupant
classification system. This system detects the conditions
1. through 4. in the table on page 160 and based on these
conditions activates or deactivates the following
systems;
 Front passenger airbag
 Side airbag on the front passenger seat
 Front passenger’s seat belt pretensioner
The system monitors the weight and load on the front
passenger seat, and the seat belt buckle switch to
determine conditions 1. through 4.
In order for the system to detect the conditions correctly,
do not do any of the following:
 Apply a heavy load to the front passenger seat or equipment
(e.g. armrest).
 Attach a commercial seatback table, etc. to the front
passenger seatback.
 Put weight on the front pa ssenger seat by putting your
hands or feet on the seatback from the rear passenger seat.

OCCUPANT RESTRAINT SYSTEMS
158
The front passenger occupant classification indicator
light indicates the actuation of the front passenger airbag,
side airbag on the front passenger seat and front
passenger’s seat belt pretensioner.
The indicator light will indicate “OFF” when the ignition switch
is in the “ON” position with the condition 2 in the table shown
below.
If the front passenger occupant classification system
determines that a person of adult size sits in the front
passenger seat but the “OFF” indicator is illuminated, one of
the following is likely to have occurred:
 A rear passenger lifts the front passenger seat cushion with
their legs.
 Objects are placed under the front passenger seat.
 The front passenger seatback is in contact with the rear
seat. To ensure the system correctly detects an adult sitting in the
front passenger seat, make sure the above do not occur.
Make sure that the “ON” indicator is illuminated when an adult
is seated in the front passenger seat. If the “OFF” indicator is
illuminated, ask the passenger to sit up straight, well back in
the seat, and with the seat belt worn correctly. If the “OFF”
indicator still
remains illuminated, either ask the passenger to
move to the rear seat, or if that is not possible, move the front
passenger seat fully rearward.
The front passenger occupant classification indicator
light will indicate “ON” and “OFF” when the ignition key
is turned to the “ON” position. After about 4 seconds, it
will go off. After about 2 seconds, the front passenger
occupant classification system operates and judges
whether to indicate “ON” or “OFF”.