Mercedes-Benz E-Cabriolet 2015 - Manual (Page 146)

Problems with the windshield wipers
Problem Possible causes/consequences and M 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.
or
X Switch off the engine using the Start/Stop button and open the
driver's door.
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.
144
Windshield wipers
Lights
and
windshield
wipers