2006 Mercedes SLK-Class Owner's Manual - Page 208

Controls in detail Audio system Switching off Remove the SmartKey from the starter switch. or PressDbutton. i If your vehicle equipment includes a Mercedes-Benz specified mobile telephone*, you can adjust its volume separately from the volume of the audio system while the telephone is being used. Adjusting sound functions The bass and treble functions are called up by pressing the O button. Settings for bass and treble are stored separately for the AM and FM wavebands, weather band, CD mode and telephone mode. Bass Press O button repeatedly until BASS appears in the display. or Press RES soft key briefly to reset bass tones to their center level. The radio switches back to the standard radio menu 8 seconds after the last soft key is pressed. Press + or - soft key to increase or decrease tone level accordingly. i Should excessively high temperatures occur while the audio system is being operated, the display will dim. If temperatures continue to rise, HIGH TEMP will appear in the display, after which the audio system will be switched off for a cooling-down period. Adjusting the volume Turn rotary control ofEbutton. The volume will increase or decrease depending on the direction turned. 207