See also:

Cleaning the exterior lighting
  Clean the plastic lenses of the exterior lights with a wet sponge and a mild cleaning agent, e.g. Mercedes-Benz car shampoo or cleaning cloths. Only use cleaning agents or cleaning ...

Activating video DVD mode
Option 1 Insert a video DVD. COMAND loads the medium inserted and starts to play it. Option 2 Select Video in the main function bar by sliding and turning the COMAND controller and pres ...

System self-test
After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs:  - ...