Water outlet hose loose in A-pillar?

[rogerkiu]

Hi all! I need your help here!

For about half year, my X has been generating clicking sound from the bottom of A pillar of right side (driver side of RHD) when the car is moving, I already checked everywhere including right side door and the space under the instrument cluster on right side, I also secured everything that was loose or possibly movable, but the clicking sound is still there. One thing is very wierd, after car wash or heavy rain, the clicking sound disappears for a while, which means the clicking sound goes away when the car is wet, but it comes back after drying up. I tried the test if the clicking sound would go away by pull the windshield washer, but it was still there. So my conclusion is that it could be something loose in A pillar and, since the clicking goes away when the car is heavily wet, so I guess it might be the water outlet hose in A pillar is loose.

Now the question is that, according to your experience, is it possible the water outlet hose in A pillar got loose? How can I tighten it up? Thanks for help! The clicking sound makes me crazy and it is really annoying when having fun with my X!!!!