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:

    Problems with the SmartKey
    Problem Possible causes/consequences and Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged. - ...

    2009 Mercedes-Benz CL-Class Review
    Sometimes, being the only car of a particular type or price can put you in a lonely place — lonely enough that automakers usually avoid it, preferring to make their own copy of what everyone else ...

    Overview of occupant safety
    In this section, you will learn the most important facts about the restraint system components of the vehicle. The restraint system consists of: - seat belts - child restraint systems - ...