The windshield wipers are inoperative

The windshield wiper drive is malfunctioning.

combination switch. Select another wiper speed on the combination switch.

qualified specialist workshop. Have the windshield wipers checked at a qualified specialist workshop.

    See also:

    Maximum loaded vehicle weight
    The maximum weight is the sum of the curb weight of the vehicle, the weight of the accessories, the total load limit and the weight of the optional equipment installed at the factory. ...

    Important safety notes
    For reasons of safety, Mercedes-Benz recommends that you drive with the lights switched on even during the daytime. In some countries, operation of the headlamps varies due to legal requiremen ...

    Increased vehicle weight due to optional equipment
    This is the combined weight of all standard and optional equipment available for the vehicle, regardless of whether it is actually installed on the vehicle or not. ...