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:
4MATIC (permanent four-wheel drive)
4MATIC ensures that all four wheels are
permanently driven. Together with ESP® and
4ETS, it improves the traction of your vehicle
whenever a drive wheel spins due to
insufficient grip.
WARNI ...
System self-test
The indicator lamp illuminates
when you:
• turn the SmartKey to position 1 or 2 in the ignition lock
• on vehicles with KEYLESS-GO, press the Start/Stop button once or twice
If an adult occupant ...
Using KEYLESS-GO to start the engine
WARNING
As long as the SmartKey is in your vehicle, the
vehicle can be started. Therefore, never leave
children unattended in the vehicle, as they
could otherwise accidentally start the engine ...
