2007 Mercedes C-Class Owner's Manual - Page 193

Controls in detail Audio system Press RES soft key briefly. The sound setting is reset depending on the sound source activated. Radio mode: STANDARD CD/AUX mode: SURROUND Telephone: SPEECH The radio switches back to the standard radio menu 8 seconds after the last soft key is pressed. Returning sound functions to factory settings Press O button to call up settings menu in the display. or Press and hold RES soft key until RESET appears in the display. The sound settings for bass and treble are returned to their center level and the volume is set to a predefined level. Vehicles with sound system*: The sound setting is reset depending on the sound source activated. Radio mode: STANDARD CD/AUX mode: SURROUND Telephone: SPEECH The radio switches back to the standard radio menu 4 seconds after the last soft key is pressed. Adjusting volume distribution Call up fader and balance functions by pressing the P button. or Press RES soft key briefly. The fader is reset to its center level. The radio switches back to the standard radio menu 8 seconds after the last soft key is pressed. Press V or W soft key. The volume is distributed accordingly between the front and rear of the vehicle. Press RES soft key briefly; the respective sound function is reset to its center level. Fader Press P button repeatedly until FADER appears in the display. 192