See also:

Vehicle remote opening
If you have unintentionally locked your vehicle (e.g. the SmartKey is still in the vehicle) and a replacement SmartKey is not available, the vehicle can be opened by a Mercedes-Benz Customer A ...

Fuse box in the rear
The fuse box is behind the armrest in the rear. To open: fold down the armrest. Pull handle 1 on the trim behind the rear seat armrest up in the direction of the arrow. Fold down trim 2. ...

Override feature for the rear sidewindows
WARNING   When children ride on the vehicle's rear seats, activate the override switch. Otherwise, the children could be injured, e.g. by trapping themselves in the rear side window. ...