A windshield wiper entire blade replacement should be done when the wiper blade no longer adequately removes rain or snow from the windshield. Worn out or damaged windshield wiper blades can cause restricted visibility and permanent damage to the windshield.
To replace the wiper blade, remove it from the wiper arm and replace the old wiper blade with a new one.
Some manufacturer factory warranties cover the cost of a windshield wiper entire blade replacement under a limited warranty. The windshield is sometimes covered as well, but if a wiper blade replacement is not performed according to manufacturer specifications, and the windshield is damaged, the the warranty on the windshield is null and void. There are maintenance plans available that will cover the cost of a windshield wiper entire blade replacement.