WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are stowed correctly, and that they cannot enter the driver's footwell. Install the floormats securely and as specified in order to ensure sufficient clearance for the pedals. Do not use loose floormats.

Floormat on the driver's side (example)
■ Driver's seat/front-passenger seat: slide the respective seat back.
■ Rear seats: slide the respective seat forwards.
■ To install: place the floormat in the footwell.
■ Press studs 1 onto retainers 2.
■ To remove: pull the floormat from retainers 2.
■ Remove the floormat.
Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of hydroplaning. You will only gain these
benefits if the correct direction of rotation is
observed.
...
Problems with your vehicle
If you should experience a problem with your
vehicle, particularly one that you believe may
affect its safe operation, we urge you to
contact an authorized Mercedes-Benz Center
immediately to have ...
Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "defrosting" function as soon
as the windshield is c ...