See also:

Removing the mechanical key
•► Push release catch 1 in the direction of the arrow and at the same time, remove mechanical key 2 from the SmartKey. ...

Please bear the following in mind
At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center. Observe the notes in the "Changing a wheel" sec ...

Activating video DVD mode
Insert a video DVD. The Rear Seat Entertainment System loads the disc. If disc mode was the last mode selected, it will now be active. If it was not, switch on video DVD mode as described in ...