Mercedes-Benz SL SERIES Operator's Manual page 134

Windshield wipers
132
Installing the wiper blades
Push the new wiper blade in the direction of
X
arrow : onto the wiper arm until lug ;
engages.
Push the wiper blade out of the removal
X
position in the direction of arrow = beyond
the point of resistance.
The wiper blade disengages with an audible
click and is freely movable again.
Make sure that the wiper blade is seated
X
correctly.
Fold the wiper arm back onto the wind-
X
shield.