passenger side mirror exxploding

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. No, this is not a "known defect". This is impact related. Something hit it. Whether you know or don't know, or don't suspect it -- that's the only possible scenario here. I'm sorry it happened for you, but it's a physical damage situation. Certainly reach out to a shop near you if you'd like a quote to fix it!