See also:

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 rotation ...

Interior
The M-Class seats five people on front buckets and a three-place split rear seat that folds to expand cargo space to 81.2 cubic feet. An optional two-place third-row seat increases passenger capac ...

The windshield wipers are obstructed
Leaves or snow, for example, may be obstructing the windshield wiper movement. The wiper motor has been deactivated. For safety reasons, you should remove the SmartKey from the ignition lock. ...