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 ...

The first 1000 miles (1500 km)
The more you look after the engine when it is new, the more satisfied you will be with its performance in the future. - Drive at varying vehicle speeds and engine speeds for the first 1000 mile ...

Cleaning the sensors
  Clean sensors 1 of the driving systems with water, car shampoo and a soft cloth. When cleaning the sensors with a power washer, maintain a distance between the vehicle and the nozzl ...