What a very helpful thread, I have just got my new (to me) EOS, a 2008 model, and although it appears to keep dry it had some deforming of the seal by the sun roof and all of the seals are hard, so I went to the local TPS and have got the "special lubricant" arriving tomorrow, so will give all the seals a good clean and treat them ready for the start of the wetter weather.
I can see this forum is going to be a great source of knowledge in the coming years as I intend keeping the car until it is recycled.
Excellent write up. I just picked of a 2009 EOS for my wife as a project car and yesterday during hard rain I received a small drip at the very top of the driver's side A-Pillar where it connects to the center trim. I immediately thought there my be a clogged drain as I went through this in the 5 MKIV VWs I owned in years past. I will investigate this now knowing what you have written here. Thanks again!
09 VW EOS White on Black manual, 01 Audi S4 Nogaro Blue w/Black interior, APR, Stasis, BBS, etc./ 03 Audi RS6 Daytona Gray Pearl w/Platinum interior, 10SecS4 Tune, MTM TCU / 05 Mercedes CLK55 AMG Black on Black, Kleemann, Renntech, BBS, Bistein, etc. / 08 Porsche Carrera S Carrera White, Factory Aero Kit / 16 Audi Allroad Glacier White Black Sport Interior w/Aluminum trim / 91 BMW 318IC (E30)
My 2008 Eos was leaking from the plastic cover on the "A" pillar down on my thigh whenever it would rain, or when in a car wash. I looked up the issue via Google and found that it was due to the connection of the down tube to the fitting on the pillar. I tried blowing it out with compressed air just in case it was full of debris, and heard air whistling out the bottom.
I then thought it was time to address the connection of the tube. To get to it, you must remove the sunvisor base bolt and pull the three pieces of plastic trim away from the windshield. You will see how the tube connects to the drain fitting under there. It appears the down tube becomes oval shaped in the round fitting, allowing water to flow round the outside of the tube. I popped the tube away from the fitting. Then using a Q tip, I applied bathroom caulk around the inside edges of the tube/fitting connection. I also ran some around the outside of the fitting / tube. I reassembled and then did the other side.
A heavy rain the next day and several days later....no leaks!
I know this is an old thread but hoping someone her can help.
I too have a leak on the (UK) passenger side A pillar. I've done what most suggest; lubricated the seals and checked the hose/nipple connection inside the A pillar. Still getting leaks
The top seal above the leaking A pillar doesn't sit as flush as the driver side one-could this be an issue?
Getting more than a little frustrated and the Missus is fed up of getting wet knees
I mentioned this sometime earlier in the thread, but it bears repeating.
I had a "roof" leak on the driver's side front carpet which defied diagnosis. My dealer had gone through and checked or replaced all the roof seals, but I was still getting water under the front carpet after a heavy rain. After much effort, they finally found that the rubber boot in the door hinge that routed wires from body to the door had come detached from the body, and water was running down the gap between the body and door and entering that hole. After replacing that boot the water problem went away. I later checked the passenger side and noticed the same problem, but was able to fix it myself with some sealant.