My wipers on less than a year old Model X were completely warped leaving huge steaks. Called Tesla and got a mobile tech. Car was not at the house so he just dropped the new wipers and I installed them. Then they call me asking for payment. I told them I thought it was a warranty replacement. After a while I get that they will “Goodwill it”. Thanks I guess. But is it a warranty item? Original wiper lasted less than a year. When I had my BMW M3 they replaced it without any questions.