As with others here and this time of year, I have a wet pass. foot well. Here's the different then normal drainage question.
I got to the top of the front pass tube with the A pillar removed, Oh **** handle removed, and pulled down head liner. Blew compressed in, and it sounds like it (air) is coming out behind the lower golve box inside the vehicle. Is that tube 2 pieces that have a joint at the firewall near or behind the fuse panel. I did repeat the air test from the outside end of the drain tube in, and heard the same air sound behind the glove box. Could the joint seperate? And if there is a joint, is it directly behind the fuse panel?
'07 LR3 SE

 

the end is behind the outside intake cover. Pull it off and the rubber hose behind it and you will see the cover.

 

So it's one piece all the way to "outside". I have seen the outlet and blew air back from there, and the air noise hiss comes from behind the lower glove box, near the cabin filter. Maybe mine is torn there? I just can't see it.

 

its in there under all that crap but chances are you blew it off the hose when you applied air pressure to it.