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:

    Important safety notes
    Level control adapts the vehicle level automatically to the current operating and driving situation. This results in reduced fuel consumption and improved handling. For vehicles with ADS: when y ...

    The M-Class also protects its occupants after a crash
    As part of the POST-SAFE® functions, the new M-Class can activate a variety of systems which can contribute towards avoiding post-accident risks. After a more serious crash, the hazard warning lig ...

    Cleaning the sensors
      Clean sensors 1 of the driving systems with water, car shampoo and a soft cloth. When cleaning the sensors with a power washer, maintain a distance between the vehicle and the nozzl ...