So I have had my 2018 xc90 r-design for 2.5 months and now there is a crack in the sunroof! I took it to the dealer today and am being told the crack was caused by some type of impact. Hard to believe since we haven't noticed anything while driving and the car otherwise has been in a garage. I'm so frustrated! Has anyone else experienced this? Any advice since the dealer is saying it will not be covered under warranty?