Activating audio AUX mode
When you connect an external audio source, audio AUX is not selected automatically.
Select Audio in the main function bar by
sliding
and turning
the COMAND
controller and press
to confirm.
Select AUX using
and press
to
confirm.
The audio AUX menu appears. The medium in the external audio source is played, if the source is connected and playback selected.

Please see the respective operating instructions for how to operate the external audio source.
You will find details on volume and sound settings in the "At a glance" section.
WARNING
External audio sources may have different
volumes, which can mean that system
messages such as traffic announcements and
navigation system announcements are much
louder. If necessary, please deactivate the
system messages or adjust their volume
manually.
See also:
Parking the vehicle for a long period
If you leave the vehicle parked for longer than
four weeks, the battery may be damaged by
exhaustive discharge.
- Connect a trickle charger.
You can obtain information about trickle
charg ...
Making a call
Entering a telephone number using the
telephone keypad
Call up the telephone basic menu.
Enter all the digits of the phone number
using the telephone keypad.
To make a call: press the
but ...
MB Info call button
•► Press and hold MB Info call button 1 for
more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in MB Info call button 1 fla ...
