See also:

Other bulbs
There are bulbs other than the Xenon bulbs that you cannot replace. Replace only the bulbs listed. Have the bulbs that you cannot replace yourself changed at a qualified specialist workshop. ...

External authorization
If COMAND does not detect your mobile phone, this may be due to particular security settings on your mobile phone. In this case, you can test if your mobile phone can find COMAND. The Bluetoot ...

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 ...