See also:

Replacing the windshield wiper blades
Removing the wiper blades Before changing the wiper blades, always set the wiper arms to a vertical position using the combination switch. There is otherwise a risk of damaging the hood. Moving ...

Cockpit
  ...

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 ...