I got a little carried away today and gutted my interior fromm the backseat back for the track this weekend. When I pulled off the passenger-side panel there is a 3/4 in clear tube back in there it goes from the top of the car down to the wheel-well. I figure it is some kind of drain for something. I know it isnt for my wiper sprayer that is on the other side. Does anyone know what it is?

 

Thats the sunroof drain line.

 

Either the sunrof drain line or the hose for the rear squirter that sits on the hatch.

 

I don't think it's the hose for the rear squirter because when I gutted my RS which has no moonroof, I didn't see a clear hose. So chances are, it's the moonroof drain line.

 

Drain line.