Mercedes-Benz E 320 Wagon 1999 ASR - Manual (Page 44)

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Replacing Wiper Blade Insert
For safety reasons, remove electronic
key from steering lock before replacing
the wiper blade, otherwise the motor
can suddenly turn on and cause injury.
Notes:
Do not open engine hood with wiper
arm folded forward.
Do not allow the wiper arm to contact
the windshield glass without a wiper
blade inserted. The glass may be
scratched or broken.
Make certain that the wiper blade is
properly installed. An improperly
installed wiper blade may cause
windshield damage.
Removal:
Fold wiper arm forward. Press safety
tab down (1), push wiper blade
downward (2) and remove.
Place wiper blade on firm support.
Slide (direction of arrow) the wiper
blade insert out of the retainer claws.
Installation:
Slide (direction of arrow) wiper blade
insert into retainer claws until tabs are
engaged.
Insert wiper blade between tabs (3) on
the wiper arm, and slide into end of
wiper arm. Press safety tab upward
until it locks in place.