See also:

To turn system off
Press the /OFF button. ...

Horn
Horn To sound the horn, push the top portion of the steering wheel’s center pad. Do not disassemble the horn. Doing so could affect proper operation of the supplemental front air bag s ...

Audio main operation
VOL/ON·OFF control: Place the ignition switch in the ACC or ON position and push the VOL/ON·OFF control knob while the system is off to call up the mode (radio or CD) that was playing immedia ...