2000 Lexus LS400 light

COMFORT ADJUSTMENT
147
Fastening front and rear seat belts
16L115a
Adjust the seat as needed and sit up straight and
well back in the seat. To fasten your belt, pull it out
of the retractor and insert the tab into the buckle.
You will hear a click when the tab locks into the buckle.
The seat belt length automatically adjusts to your size
and the seat position.
The retractor will lock the belt during a sudden stop or on
impact. It also may lock if you lean forward too quickly.
A slow, easy motion will allow the belt to extend, and you
can move around freely.When a passenger's shoulder belt is completely
extended and is then retracted even slightly, the belt is
locked in that position and cannot be extended. This
feature is used to hold the child restraint system
securely.
(For details, see ºChild restraintº on page 184.)
To free the belt again, fully retract the belt and then pull
the belt out once more.
If the seat belt cannot be pulled out of the retractor, firmly
pull the belt and release it. You will then be able to
smoothly pull the belt out of the retractor.

COMFORT ADJUSTMENT
156
16L136±2
This indicator comes on when the ignition key is
turned to the ªACCº or ªONº position. It goes off
after about 6 seconds. This means the front seat
belt pretensioners are operating properly.
This warning light system monitors the airbag sensor
assembly, inflator, seat belt pretensioner assembly,
warning light, interconnecting wiring and power sources.
(For details, see ªService reminder indicators and
warning buzzersº on page 62.)

COMFORT ADJUSTMENT
157
16L243b

1SRS warning light
2Seat belt pretensioner assembly
3Airbag sensor assembly
The seat belt pretensioner system consists mainly of the
above components, and their locations are shown in the
illustration.
The seat belt pretensioner is controlled by the airbag
sensor assembly. The airbag sensor assembly consists
of a safing sensor and airbag sensor.
When a seat belt pretensioner is 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 seat belt pretensioner has been activated, the
seat belt retractor remains locked.

COMFORT ADJUSTMENT
160
16L241
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 ªACCº or 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
pretensioner.
 The front seat belt pretensioner assembly or
surrounding area has been damaged. 
The front parts of the vehicle (shaded in the
illustration) were involved in an accident that did not
cause the seat belt pretensioners to operate.
 The front seat belt pretensioner assembly is
scratched, cracked, or otherwise damaged.

COMFORT ADJUSTMENT
165
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, side airbag sensor assemblies,
inflators, warning light, interconnecting wiring and power
sources. (For details, see ºService reminder indicators
and warning buzzersº on page 62.)
16L029

COMFORT ADJUSTMENT
172

1Side airbag module (airbag and inflator)
2Airbag module for front passenger
(airbag and inflator)
3Side airbag sensor assembly
4Airbag module for driver (airbag and inflator)
5SRS warning light
6Airbag sensor assembly
The SRS 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.
In a severe frontal impact, the driver and front passenger
airbag sensor detects deceleration and the system
triggers the front airbag inflators. In a severe side
impact, the side airbag sensor triggers the side airbag
inflator. Then a chemical reaction in the inflators quickly
fills the airbags with non±toxic gas to help restrain the
forward or lateral motion of the occupants. When the SRS operates, it produces a fairly loud noise
and release some smoke and residue along with
non±toxic
gas. This does not indicate a fire. This gas is
normally harmless; however, for those who have
delicate skin, it may cause a minor skin irritation. Be
sure to wash off any residue as soon as possible to
prevent any potential skin irritation.
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.
Parts of the airbag module (steering wheel hub,
dashboard, front seats) may be hot for several minutes,
but the airbags themselves will not be hot. The airbags
are designed to inflate only once.
A crash severe enough to inflate the driver and front
passenger airbags may break the windshield as the
vehicle buckles. In vehicles with a front passenger
airbag, the windshield may also be damaged by
absorbing some of the force of the inflating airbag.

COMFORT ADJUSTMENT
182
16L136-2
The SRS airbag system has an indicator to inform the
driver of operating problems. If either of the following
conditions occurs, this indicates a malfunction of the
airbags. Contact your Lexus dealer as soon as possible
to service the vehicle.
When the ignition key is turned to the ªACCº or ªONº
position, the light does not come on, stays on 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 fail. If the light flashes, the side
airbags fail.

COMFORT ADJUSTMENT
193
CAUTION
After inserting the tab, make sure the tab and buckle
are locked and that the lap and shoulder portions of
the belt are not twisted.
 Do not insert coins, clips, etc. in the buckle as this
may prevent you from properly latching the tab and
buckle.
 If the seat belt does not function normally,
immediately contact your Lexus dealer. Do not use
the seat until the seat belt is fixed. It cannot protect
your child from injury.
16L161±2
2. Fully extend the shoulder belt to put it in the lock
mode. When the belt is then retracted even slightly, it
cannot be extended.
To hold the infant seat securely, make sure the belt is in
the lock mode before letting the belt retract.