See also:

Overhead control panel
  ...

Socket in the rear-compartment center console
Socket in the rear-compartment center console Pull cover 2 out by its top edge. Lift up the cover of socket 1. ...

Vehicle remote closing
If you forget to lock your vehicle but are no longer in the vicinity of the vehicle, it can be locked for you by the Mercedes-Benz Customer Assistance Center. The vehicle can be locked remotely ...