See also:

The windshield wipers are inoperative
The windshield wiper drive is malfunctioning. Select another wiper speed on the combination switch. Have the windshield wipers checked at a qualified specialist workshop. ...

General notes
WARNING All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes-B ...

Important safety notes
WARNING   Air bags are designed to reduce the incidence of injuries and fatalities in certain situations: • frontal impacts (driver's and frontpassenger front air bags and driver's kne ...