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

    Service and literature
    Your vehicle is covered under the terms of the warranties printed in the Service and Warranty Information booklet. Your authorized Mercedes-Benz Center will exchange or repair any defective pa ...

    Problems with the steering wheel heating
    If steering wheel heating indicator lamp 3 is flashing, the steering wheel heating has switched off automatically. The vehicle's electrical system voltage is too low because too many electrica ...