See also:

Folding the rear bench seat forwards
If the driver's or front-passenger seat is set for a larger person, it may not be possible to fold the rear bench seat forwards. In this case, move the front seats as far forward as possible. ...

Snow chains
For safety reasons, Mercedes-Benz recommends that you only use snow chains which have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ...

PRE-SAFE® (preventative occupant protection)
WARNING The PRE-SAFE® system reduces the impact of an accident on vehicle occupants, as long as their seat belts have been fastened correctly. Although your vehicle is equipped with a PRESAFE ...