How do you replace Scion xB windshield wiper blades on the front windshield?

To replace the windshield wiper blades on a Scion xB, first lift the wiper arms away from the windshield. Press the small tab on the underside of the wiper blade where it connects to the arm and slide the blade off the arm. Attach the new wiper blade by sliding it onto the arm until you hear a click, indicating it's secure. Finally, gently lower the wiper arms back onto the windshield.