See also:

Important safety notes
The HomeLink® garage door opener integrated in the rear-view mirror allows you to operate up to three different door and gate systems. Certain garage door drives are incompatible with the integr ...

Problems with your vehicle
If you should experience a problem with your vehicle, particularly one that you believe may affect its safe operation, we urge you to contact an authorized Mercedes-Benz Center immediately to ...

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 ...