Mercedes-Benz 2012 B Class - Manual (Page 117)

Problems with the windshield wipers
Problem Possible causes/consequences and M Solutions
The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield
wiper movement. The wiper motor has been deactivated.
X For safety reasons, you should remove the SmartKey from the
ignition lock.
X Remove the cause of the obstruction.
X Switch the windshield wipers back on.
The windshield wipers
fail completely. The windshield wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windshield wipers checked at a qualified specialist
workshop.
The spray nozzles are
misaligned. The windshield washer fluid from the spray nozzles no longer hits
the center of the windshield. The spray nozzles are misaligned.
X Have the spray nozzles adjusted at a qualified specialist
workshop.
Windshield wipers
115
Lights and windshield wipers
Z