Of course, the waterlogged backup light has dried and has yet to return to its condensation-filled state, so there’s nothing they can do about it. I even purposely went through a car wash (touchless, of course) beforehand and nothing. Drove it in the rain the other day, too. No moisture buildup whatsoever. It’s like it never happened. Weird.
Anyway, some progress was made. Apparently, this part is broken:
I mentioned that it was loose, so they took a look and apparently the part is held on by several clips and one of the inner clips has broken off. No idea how or why. Either way, I don’t really care since the dealer ordered a new one under warranty.
Let’s hope the mysterious moisture problem doesn’t return!