See also:

Resetting to factory settings
For safety reasons, the Daytime Running Lights: function in the Lights submenu is only reset when the vehicle is stationary. – Press the or button on the steering wheel to select the Setting ...

Removing the mechanical key
Push release catch 1 in the direction of the arrow and at the same time, remove mechanical key 2 from the SmartKey. ...

Service for recovering a stolen vehicle
If your vehicle has been stolen: Notify the police. The police will issue a numbered incident report. This number will be forwarded to the Mercedes-Benz Customer Assistance Center together ...