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:

    Parking brake
    If you drive on wet roads or dirt-covered surfaces, road salt and/or dirt could get into the parking brake. In order to prevent corrosion and a reduction in the braking power of the parking brake ...

    E-Class Wagon in the Market
    The E350 wagon joins a redesigned E-Class that's been a success by any measure. The wagon comes up short in terms of execution, but given the car's pedigree — and the fact that there's an E63 AMG ...

    Car radio, CD player and Bluetooth interface as standard
    Nowadays, nobody wants to miss out on the news, the telephone, route guidance or music listening pleasure when in the car. For this reason Mercedes-Benz has equipped the new CLS with state-of-the- ...