Activate the wiper service position via settings in the centre display.
Fold the wipers up and away from the windscreen.
Carefully pull the lower half of the wiper blade upwards until the blade is horizontal.
Remove the wiper blade from the wiper arm.
Make sure that the blade for the driver side is longer than the blade for the passenger side. Whilst keeping the wiper blade horizontal, slide the wiper blade onto the wiper arm. Ensure that the pin on the wiper arm goes into the hole on the wiper blade.
Grasp the lower part of the wiper blade and move it back down so that the blade is vertical. Push the blade into the wiper arm until you hear a click sound.
Check that the blade is firmly attached.
Fold the wiper arms back down against the windscreen.
Deactivate the wiper service position.