Activate the wiper service position via settings in the display.
Fold the wipers up and away from the windscreen.
Press the button on the wiper arm and pull the blade straight out so that it's parallel with the wiper arm.
Make sure that the blade for the driver side is longer than the blade for the passenger side. Slide the new blade into the wiper arm until you hear it click into place.
Check that the blade is firmly attached.
Fold the wiper arms back down against the windscreen.
Deactivate the wiper service position.