See also:

Problems with the engine
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Activating/deactivating the rear view camera
– To activate: make sure that the SmartKey is in position 2 in the ignition lock. – Make sure that the "rear view camera" function is selected in COMAND (see the separate operating in ...

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" ...