2008 Mercedes C-Class Owner's Manual - Page 178

Controls in detail Audio system Operating safety Audio system components Audio control unit With the audio control unit you can: switch the audio system on/off adjust the volume select the operating modes enter telephone numbers and accept, reject, initiate and end telephone calls load and eject CDs Warning! Any alterations made to electronic components can cause malfunctions. G With the audio system you can operate the following main functions: audio function with the radio, Sat*, disc (CD audio or MP3 mode) the telephone* with the phone book various system settings The audio system consists of the following: audio control unit audio display audio controller with back and delete button In addition, the audio system can also be operated with the multifunction steering wheel ( page 152). In these instructions, the keypad (right side of audio control unit) and the function buttons are referred to as "buttons". The radio, amplifier, CD changer*, satellite radio*, and telephone* are interconnected. When one of the components is not operational or has not been removed/replaced properly, the function of other components may be impaired. This condition might seriously impair the operating safety of your vehicle. We recommend that you have any service work on electronic components carried out at an authorized Mercedes-Benz Center. 177