A few days ago we turned on our rear defrost on and about a minute later heard a loud crack. Thought it was odd. Then we noticed the rear glass is cracked right along one of the defrost lines and there is a burn mark on the glass on the defrost line. Is there any way the defrost caused this? The outside of the glass is smooth, no crack and you can feel the crack on the inside of the glass and the rear defrost no longer works.
We we not moving or driving when this happened,
Of course our car is out of warranty (57k miles) and Tesla service center estimate is just about $800 to replace.
Thoughts?