The windshield wiper and blade assembly should be inspected periodically for damage, loose components and cracked or worn blade elements.
Road film can build up on the wiper blades and affect their efficiency, so they should be washed regularly with a mild detergent solution.
If the wiper blade elements are cracked, worn or warped, or no longer clean adequately, they should be replaced with new ones.
Lift the arm assembly away from the glass for clearance, press on the release lever, then slide the wiper blade assembly out of the hook in the end of the arm.
4a To release the blade holder, push the release pin . . .
4b . . . and pull the wiper blade in the direction of the arrow to separate it from the arm.
Attach the new wiper to the arm. Connection can be confirmed by an audible click.