See also:

AM selection
Press the “AM” button when the radio is on to select AM reception. ...

Stereo indicator
The stereo indicator “ST” will illuminate when an FM stereo broadcast is received. ...

Precautions against vehicle modification
To avoid accidental activation of the system or rendering the system inoperative, which may result in serious injury, no modifications should be made to any components or wiring of the SRS airbag ...