See also:

De-registering (de-authorizing) a mobile phone
Mercedes-Benz USA, LLC recommends deauthorizating in both COMAND and the mobile phone. Subsequent authorization may otherwise fail. To call up the telephone menu: press the function button ...

KEYLESS-GO
General information Vehicles with KEYLESS-GO are equipped with a SmartKey featuring an integrated KEYLESSGO function and a detachable Start/Stop button. The Start/Stop button must be inserted ...

Call priority
When service calls are active, e.g. Roadside Assistance or MB Info calls, an emergency call can still be initiated. In this case, an emergency call will take priority and override all other ac ...