After a heavy rain, my passenger rear seat is all wet. I don't see any water marks on the head liner. Any ideas?

Factory moonroof, no roof rack. It's like the wetness comes from where the back meets the seat.

 

Sorry my Depends leaked! :O ! Have you had any heavy Rain lately?My guess would be your moon roof,I dont have one so dont know how close it is to the rear seat! I had a sun roof on another car a way back and it would leaf at the seal! I would try and hose the roof down with someone inside, holding a paper towel on the moon roof! look for it to get damp,If all is ok I would go to a car wash,maybe the more water pressure would show up a leak. Do you have kids who may have spilled something?
Please post what you find!

 

There's probably a moonroof channel drain clogged somewhere. Open the mooroof and look around up there. The tracks for the glass extend back to over the back seat, so maybe the water is travelling back along the track and then dripping through the headliner somewhere. I've got a moonroof too, but no troubles with it ever.

 

Turns out that the passenger side drain hose disconnected from the back of the moonroof. Figure I'll caulk it to stay in place.

 

Moral of the story is, never buy a vehicle with a hole in the roof!

 

I thought somebody was being immigration status insensitive. Does anybody have a snow back seat?