See also:

Roadside Assistance button
  Press and hold Roadside Assistance button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in Roadside Assistance but ...

Calling up the compass
To obtain a correct display in rear-view mirror 1, the compass must be calibrated and the magnetic field zone must be set. ...

Changing batteries
Batteries are required for the remote control and for the two sets of cordless headphones. Changing batteries. ...