See also:

Low tire pressure warning light (U.S.-spec. models)
When the ignition switch is turned to the “ON” position, the low tire pressure warning light will illuminate for approximately 2 seconds to check that the tire pressure monitoring system (TPMS) ...

Stereo indicator
The stereo indicator “ST” (type A, B and C audio)/“STEREO” (type D audio) will illuminate when an FM stereo broadcast is received. ...

Example of the type of accident in which the SRS curtain airbag will basically not deploy.
The SRS curtain airbags are not basically designed to deploy if the vehicle pitches end over end. ...