See also:

DISC Button
Pressing the DISC button will allow you to switch from AM/FM modes to Disc modes. ...

Operating Instructions - Radio Mode
NOTE: The ignition switch must be in the ON or ACC position to operate the radio. Power Switch/Volume Control (Rotary) Push the ON/VOLUME control knob to turn on the radio. Press the ON/VOLUME c ...

Steering Wheel Audio Controls
The remote sound system controls are located on the rear surface of the steering wheel. Reach behind the wheel to access the switches. Remote Sound System Controls (Back View Of Steering Wheel) ...