Mercedes-Benz M-Class Operator's Manual page 136

Windshield wipers
134
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the wiper arm without a wiper blade and it
falls onto the windshield/rear window, the
windshield/rear window may be damaged
by the force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified
specialist workshop.
! To avoid damaging the wiper blades,
make sure that you touch only the wiper
arm of the wiper.
Changing the windshield wiper blades
Removing the wiper blades
Remove the SmartKey from the ignition
X
lock.
Fold the wiper arm away from the
X
windshield.
Firmly press release knob : and pull wiper
X
blade ; upwards from the wiper arm in the
direction of the arrow.
Installing the wiper blades
Position new wiper blade : in the retainer
X
on the wiper arm and slide it into place in
the direction of the arrow.
The wiper blade audibly engages.
Make sure that the wiper blade is seated
X
correctly.
Fold the wiper arm back onto the
X
windshield.
Replacing the rear window wiper blade
Removing a wiper blade
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