Occasionally, one should check the elements of a windshield wiper blade for cracks and weakening. This can be achieved by lifting the wiper blade assembly away from the glass. Then, press the release lever and slide the blade assembly out of the hook at the end of it. Alternatively, you may do this by depressing the release lever and sliding down the wiper assembly along its arm thus exiting through its tip. After which, reinstalling it onto the arm; wetting your windshield to check if the wipers are functioning properly will be in order.