Toyota 2012 Highlander Owner's Manual page 104

The main SRS airbag system components are shown above. The
SRS airbag system is controlled by the airbag sensor assembly. The
airbag sensor assembly consists of a safing sensor and an airbag
sensor.
In certain types of severe frontal or side impacts or vehicle rollover,
the SRS airbag system triggers the airbag inflators. A chemical reac-
tion in the inflators quickly fills the airbags with non-toxic gas to help
restrain the motion of the occupants.
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SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag
sensors, side and curtain shield airbag sensor assemblies, curtain shield air-
bag sensor assemblies, door sensors, driver's seat position sensor, driver's
seat belt buckle switch, front passenger occupant classification system
(ECU and sensors), "AIR BAG ON" and "AIR BAG OFF" indicator lights,
front passenger's seat belt buckle switch, front seat belt pretensioner
assemblies, inflators, interconnecting wiring and power sources. (→P. 529)
■
If the SRS airbags deploy (inflate)
●
Bruising and slight abrasions may result from contact with a deploying
(inflating) SRS airbag.
●
A loud noise and white powder will be emitted.
●
Parts of the airbag module (steering wheel hub, airbag cover and inflator)
as well as the front seats, and parts of the front and rear pillars and roof
side rail, may be hot for several minutes. The airbag itself may also be
hot.
●
The windshield may crack.
1-7. Safety information
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