Porsche Cayman Owner's Manual page 206

Changing rear window wiper blade
Caution!
Risk of damage. If a wiper blade is not
changed properly, it can come loose when
the car is moving.
Check whether the wiper blade is seated
securely. The wiper blade must engage the
wiper arm properly.
1. Apply the handbrake.
2. Switch the rear window wiper off (position 0)
and remove the ignition key.
204
Maintenance, Car Care
3. Fold wiper arm away from the rear window.
4. Press together the plastic spring of the wiper
blade.
5. Pull wiper blade upwards out of wiper arm.
6. Insert new wiper blade into the wiper arm from
above.
7. Press together the plastic spring of the wiper
blade and engage it in the wiper arm until it
snaps into place.
8. Carefully fold wiper arm back on the rear
window.