Mercedes-Benz 2013 S-Class Operator's Manual page 293

The windshield wipers are inoperative
The windshield wiper drive is malfunctioning.
Select another wiper speed on the
X
combination switch.
Have the windshield wipers checked at a
X
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.
Have the spray nozzles adjusted at a
X
qualified specialist workshop.
Windshield wipers
Z
291