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 ...

Vehicle
Activating/deactivating the automatic door locking feature If you select the Automatic Door Lock: function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). For further ...

Important safety notes
When loading the vehicle, make sure that you do not stack the load in the cargo compartment higher than the lower edge of the side windows. Do not place heavy objects on top of the cargo ...