According to the bulletin, one cause might be an aftermarket r | USA car news 🚘 sell buy car. 🚘 Private group of friends :

According to the bulletin, one cause might be an aftermarket radar detector hardwired into the inside rear-view mirror. The detector could cause a higher voltage to go to the side-view mirror, resulting in the unsightly damage. If there is damage, then the radar detector is likely tapped into the inside mirror’s X1 connector, located behind the mirror’s front cover. The fix requires disconnecting the jumper harness and replacing the damaged outside mirror. Sadly, the warranty doesn’t cover any damage caused by aftermarket devices, so owners will have to foot the bill.