See also:

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. ...

Interchanging the wheels
WARNING Rotate front and rear wheels only if the tires are of the same dimension. If your vehicle is equipped with mixed-size tires (different tire dimensions front vs. rear), tire rotatio ...

Setting the center vents in the rear compartment
Example: center vents in the rear compartment with rear control panel 1 Rear-compartment air vent thumbwheel 2 Rear-compartment air vent, right 3 Rear control panel 4 Rear-compartment air vent ...