Toyota PRIUS Owner's Manual page 560

560
6-3. Do-it-yourself maintenance
Pull the wiper rubber out past
3
the stopper on the wiper blade,
and then continue to pull until it
is completely removed.
Lightly grasp between the claws of
the wiper blade to allow the wiper
rubber to lift up, making it easier to
remove.
Remove the 2 metal plates from
4
the old wiper rubber and install
them to the replacement wiper
rubber.
Insert the wiper rubber starting from the claw at the center of the
5
wiper blade. Pass the wiper rubber through the 3 claws so that it
sticks out from the stopper, and then pass the wiper rubber through
the final remaining claw.
Applying a small amount of washer fluid to the wiper rubber can make it
easier to insert the claws into the grooves.
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