The windshield wipers are inoperative

The windshield wiper drive is malfunctioning.

the Select another wiper speed on the combination switch.
at a Have the windshield wipers checked at a qualified specialist workshop.

    See also:

    Making adjustments in 5 mph (Canada: 10 km/h) increments
    Briefly press the cruise control lever beyond the pressure point, up 1 for a higher speed or down 2 for a lower speed. The last speed stored is increased or reduced. ...

    Roadside Assistance
    The Mercedes-Benz Roadside Assistance Program offers technical help in the event of a breakdown. Calls to the toll-free Roadside Assistance Hotline are answered by our agents 24 hours a day, 3 ...

    Displaying navigation instructions
    In the Navi menu, the multifunction display shows navigation instructions. Further information. Activate COMAND. Press the or button on the steering wheel to select the Navi menu. ...