Any advice or assistance...I have leak in passenger side backseat floor. The carpet is wet and the rubber floor mat has water on top. No visible signs of leaks from sunroof or other interior components of car. My mechanic looked at it and blew out the tubes...seems like an improvement but after a heavy rain it is wet again. Any ideas? I posted exploded parts diagrams below...do you think replacing tubes would fix and what is approximate cost? Do it yourself? I see water repair kit in other diagram? Any advice or assistance would be appreciated?
