1994 Lexus LS400 sensor

COMFORT ADJUSTMENT
67
SUPPLEMENTAL RESTRAINT
SYSTEM (SRS)
The Supplemental Restraint System (SRS) consists of
Airbags and Seat Belt Pretensioners. The combination of
these two systems provides further protection to the
driver and front passenger in a severe collision.
Airbags:
In response to a severe frontal impact, the airbags inflate
and reduce the likelihood of the driver and passenger’s
heads from directly hitting the steering wheel and
instrument panel.
Seat belt pretensioners:
In response to a severe frontal impact, the seat belts are
quickly drawn back in by the retractors so that the belts
snugly restrain the driver and front passenger.The passenger airbag is activated together with the driver
airbag, even with no passenger in the front seat.
The seat belt pretensioners are activated together with the
airbags, even with no passenger in the front seat.
This indicator comes on when the ignition key is turned to
the “ACC” or “ON” position. It goes off after about 6
seconds. This means the SRS is operating properly.
The SRS warning light system monitors the front airbag
sensors, center airbag sensor assembly, inflators, seat belt
pretensioners, warning light, interconnecting wiring and power
sources.

COMFORT ADJUSTMENT
68
The SRS is designed to activate in response to a severe
frontal impact within the shaded area shown in the
illustration.
The SRS does not work in the following cases.

Impact from the side or real.

Vehicle overturn

Frontal collision at low speeds
For your safety, be sure to always wear your seat belts.
Front airbag sensorWarning lightFront airbag sensor
Passenger airbag module
(airbag and inflator)
Center airbag sensor assembly
Seat belt pretensioner
Steering wheel
pad assembly
(airbag and
inflator)
Seat belt pretensioner
The center airbag sensor assembly consists of a safing sensor
and center airbag sensor. In a severe frontal impact, a front
airbag sensor and safing sensor, or center airbag sensor and
safing sensor detect the shock, and the center airbag sensor
assembly triggers the inflators and seat belt pretensioners.
Then the inflators fill the airbags and the seat belts are quickly
drawn back in by the retractors to help restrain forward motion
of the occupants.
When the SRS operates, it produces an operating noise and
releases a small amount of smoke-like gas. This gas is
harmless and does not indicate a fire.

COMFORT ADJUSTMENT
70

Do not sit on the edge of the seat or lean over the
instrument panel when the vehicle is in use. The airbag
inflates with considerable speed and force; you may be
severely injured. Sit up straight and well back in the
seat, and always use your seat belt.
Do not put objects on or in front of the instrument panel
that houses the airbag system. They might restrict
inflation or cause personal injury.

Do not modify, remove or open any component or
wiring, such as the steering wheel, column cover, front
passenger airbag cover, front passenger airbag, center
airbag sensor assembly, front airbag sensors, or seat
belt assembly. Doing any of these may cause sudden
SRS operation or disable the system, which could
result in personal injury.
Failure to follow these instructions can result in severe
injuries.