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:
Switching the ZONE function on/off
•► To switch on: press the
button.
The indicator lamp above the button
lights up.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
not adopt ...
SmartKey
Display messages
Possible causes/consequences and
Solutions
You have put the wrong SmartKey in the ignition lock.
Use the correct SmartKey.
The SmartKey ...
Service for recovering a stolen vehicle
If your vehicle has been stolen:
•► Notify the police.
The police will issue a numbered incident
report.
•► This number will be forwarded to the
Mercedes-Benz Customer Assistance
...