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Controls in detail
Audio system
Operating safety Audio system components
With the audio system you can operate the
following main functions:
ț audio function with the radio, Sat*,
disc (CD audio or MP3 mode)
ț the telephone* with the phone book
ț various system settings
The audio system consists of the following:
ț audio control unit
ț audio display
ț audio controller with back and delete
button
In addition, the audio system can also be
operated with the multifunction steering
wheel (
୴ page 152).
In these instructions, the keypad (right
side of audio control unit) and the function
buttons are referred to as “buttons”.
Audio control unit
With the audio control unit you can:
ț switch the audio system on/off
ț adjust the volume
ț select the operating modes
ț enter telephone numbers and accept,
reject, initiate and end telephone calls
ț load and eject CDs
Warning! G
Any alterations made to electronic
components can cause malfunctions.
The radio, amplifier, CD changer*, satellite
radio*, and telephone* are interconnected.
When one of the components is not opera-
tional 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.