See also:

Power Switch/Volume Control (Rotary)
Push the ON/VOLUME control knob to turn on the radio. Push the ON/VOLUME control knob a second time to turn off the radio. ...

Setting the Tone, Balance, and Fade
Push the rotary TUNE/SCROLL control knob and BASS will display. Turn the TUNE/SCROLL control knob to the right or left to increase or decrease the bass tones. Push the rotary TUNE/SCROLL control kn ...

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) ...