2008 Mercedes C-Class Owner's Manual - Page 189

Controls in detail Audio system Operation In the following descriptions, an operation step is described as in example below. b Radio Enter Frequency Switching audio system on or off The audio system will come back on with the last selected function. is the short for Press button b on audio control unit repeatedly until desired waveband has been selected. Slide mr. Slide om or rotate ymz the audio controller to select Radio. Press the audio controller n. The Radio menu is selected and a list of submenus appears. Slide qm or rotate ymz the audio controller to select Enter Frequency. Press the audio controller n. The Enter Frequency submenu is selected and appears in the audio display. or If the audio system was on as you switched off the ignition, turn the SmartKey in the starter switch to position 2. or Open the audio display cover. Rotary control/push button o i If the audio system is switched on without the SmartKey in the starter switch, it will automatically switch off again after approximately 30 minutes. If your vehicle is equipped with a telephone*, the audio display may prompt you to enter your PIN (GSM network) or passcode (CDMA network). Switching off: Press push button o. or Turn the SmartKey in the starter switch to position 0. 1 Push button o 2 Rotary control Switching on: Press push button o. i Should excessively high temperatures occur while the audio system is being operated, HIGH TEMP will appear in the audio display, after which the audio system will be switched off for a cooling-down period. i When you switch off the audio system, you also switch off the currently playing audio source and the telephone* operating via audio control unit is not possible. 188