Lexus SC 430 2004 Manual page 137

OCCUPANT RESTRAINT SYSTEMS
16sa33a
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 front airbags are operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side airbag sensors, occupant
detection sensor, seat belt buckle switch, seat belt
pretensioner assemblies, inflators, warning light,
interconnecting wiring and power sources. (For details, see
"Service reminder indicators and warning buzzers" on page
40.)
If 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.
D When the ignition switch is turned to the "ON" position, the
light does not come on, stays on or flashes.
D The light comes on or starts flashing while driving.
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16sa43b
In the following cases, contact your Lexus dealer as soon as
possible:
D The SRS front airbags have been inflated.
D The front of the vehicle (shaded in the illustration) was
involved in an accident that was not severe enough to cause
the SRS front airbags to inflate.