Activate the wiper service position via settings in the centre display.

Fold the wipers up and away from the windscreen.
Pull the lower part of the blade away from the arm until you hear a click.

Press the button on the wiper arm and remove the wiper blade by pulling it upwards.

Make sure that the blade for the driver side is longer than the blade for the passenger side. Slide the wiper blade onto the wiper arm. Ensure that the pin on the wiper arm goes into the hole on the wiper blade. Push the blade into the wiper arm until you hear a click sound.
Push the lower part of the blade towards the arm again until you hear a click.
Check that the blade is firmly attached.
Fold the wiper arms back down against the windscreen.
Deactivate the wiper service position.