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 ...

Storing a destination permanently in the destination memory
Proceed as described in the "From the list of previous destinations" section. ...

Trailer towing
- Drive in the middle of the engine speed range on uphill gradients. - Depending on the uphill or downhill gradient, shift down into shift range 3 or 2, even if cruise control or DISTRONIC PL ...