okay, so I was defrosting the rear windows and after 2 minutes, I noticed this big crack on my driver side mirror. I touched it and it was really hot. I live in the coast so it was like 54 degrees outside but still is this a factory defect that they didn't think of? Is there an option to turn it off if you are defrosting the rear window?

So now my other problem is, will this be covered with the warranty since I was using the heated defrosting? I also bought the extended warranty.

Anyone else have this issue?

Thanks for the help.