Mercedes-Benz M-Class Owners Manual
See also:
Problems with the SmartKey
Problem
Possible causes/consequences and
Solutions
You cannot lock or unlock the vehicle using
the SmartKey.
The SmartKey battery is discharged or nearly discharged.
...
Route guidance active
No change of direction announced
1. Distance to the destination
2. Distance to the next change of direction
3. Current road
4. Symbol for "follow the road's course" ...
Operating audio player or audio media
Audio data from various audio devices or
media can be played, depending on the
equipment installed in the vehicle.
Switch on the audio system or
COMAND
and select the audio device or medium ...
