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" section

    See also:

    Rejects or ends a call
    Press the button on the steering wheel. If you are not in the Telephone menu, you can still reject or end a call. ...

    Programming the integrated garagedoor opener on the rear-view mirror
    Programming WARNING   Only press the transmitter button on the integrated garage door opener if there are no persons or objects present within the sweep of the garage door. People could ...

    Restoring the factory settings
    Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...