See also:

Installing the ball coupling
WARNING If the vehicle/trailer combination is not secured, the trailer may come loose. As a result, you could cause an accident. Observe the ball coupling manufacturer's installation inst ...

Important safety notes
Do not leave the SmartKey in the trunk/cargo compartment. You could otherwise lock yourself out. WARNING When leaving the vehicle, always remove the SmartKey from the ignition lock. Always ...

Frequencies for the garage door opener
The radio type approval number and the frequency range for the garage door opener can be found on the Internet at: http://www.mercedes-benz.de/betriebsanleitung. ...