See also:

Setting the side air vents
To open/close: turn thumbwheel 3 up or down. Side window defroster vent 1 is never completely shut, even if side air vent 2 is shut. ...

Preparing the vehicle
WARNING The wheel and tire size of the emergency spare wheel/spare wheel may differ to that of the damaged wheel. When using an emergency spare wheel/spare wheel the handling characteristic ...

Safety
As it should be, the M-Class is full of standard safety features like an electronic stability system, antilock brakes, traction control, side curtain airbags, and side-impact airbags for the front ...