Hey guys, I'm stumped. I have water leaking in the rear of the truck, collecting in the small left well, adjacent to the gas tank.
I have cleaned out all the drain routes, sunroof, windshield, and even the gas tank. And it's still collecting after a hard rain.
I cant source the location, The dealer thought it was the sunroof, but the assembly is intact and there isnt any water unless its a hard rain.

Any ideas?

 

Pull the interior paneling and inspect the sunroof drainage tube connections. In my old Civic, the drainage tube worked it's way off it's lower connector and was dumping water into the inside after rain.

 

check the alignment of your tailgate. look at how the glass lines up near each taillight. i've seen many RDXs with one side sticking out a bit further than the other, which creates a poor seal in the bottom corner of the tailgate on that side

 

I have the same problem. Did you find a solution?