See also:

De-registering (de-authorizing) a mobile phone
Mercedes-Benz USA, LLC recommends deauthorizating in both COMAND and the mobile phone. Subsequent authorization may otherwise fail. To call up the telephone menu: press the function button ...

Adjusting the backrests in the 2nd row of seats
You can adjust the angle of the backrests in the second row of seats. There are ten detent positions to choose from. - Pull the left or right release lever 2 upwards in the direction of the ...

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 ...