Mercedes-Benz M-Class Operator's Manual page 122

Windshield wipers
120
Remove the SmartKey from the ignition
X
lock.
Fold wiper arm : away from the rear
X
window until it engages.
Position wiper blade ; at a right angle to
X
wiper arm :.
Hold wiper arm : and press wiper
X
blade ; in the direction of the arrow until
it releases.
Remove wiper blade ;.
X
Installing the wiper blade
Place new wiper blade ; onto wiper
X
arm :.
Hold wiper arm : and press wiper
X
blade ; in the opposite direction to the
arrow until it engages.
Make sure that wiper blade ; is seated
X
correctly.
Position wiper blade ; parallel to wiper
X
arm :.
Fold wiper arm : back onto the rear
X
window.
Problems with the windshield wipers
The windshield wipers are obstructed
Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
For safety reasons, you should remove the
X
SmartKey from the ignition lock.
or
Switch off the engine using the Start/Stop
X
button and open the driver's door.
Remove the cause of the obstruction.
X
Switch the windshield wipers back on.
X
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.
I n f o r ma t i o n P r o v i d e d b y :