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    Thread: Have a water leak? - MKIV sunroof drain locations

    1. 03-30-2005 08:14 AM #1
      This topic comes up all too often, so I figured it was about time that these locations got posted. FYI, these locations were photographed on a 99.5 Jetta - the locations may differ slightly on the Golf/GTI and on later model-year cars.

      If you have water leaking into your MKIV, make sure to check that the drain tubes for the sunroof tray (all sunroofs leak - the tray catches the water so that doesn't enter the car and tubes carry is safely away).

      The sunroof tray has 4 drain holes in it, one in each corner, i.e., front left, front right, rear left and rear right. The two pictures below show the location of the front right drain hole. The holes at the other locations are similar.

      NOTE: The rear holes are covered by the roof and are not normally visible.


      Each of the four drain holes is connected to a tube that runs through the A- and C-pillars and end at a nipple. It is common for the nipple to stick closed and not drain the water out of the tube. When this occurs, the water backs up into the sunroof tray and overflows into the car. If you notice a wet headliner in proximity to the sunroof opening, then this is most likely the cause. To drain the tubes, squeeze the nipples and some water and other crap may/should flow out. If you think there may be a tube clog, it's a good idea to carefully pour a cup or so of water into the sunroof tray to flush each of the tubes out. I would do this until the water flows out clearly and easily.

      NOTE: Some repositioning of the car may be necessary to individually place each of the drain holes at the lowest point of the tray ... that is unless you've figured out a way to beat gravity and make water flow uphill.

      The four drain tube nipples are shown in the pics below.

      Gary


      Modified by VgRt6 at 8:25 AM 3-30-2005


    2. Banned melanotaenia's Avatar
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      03-30-2005 08:19 AM #2
      awesome thanks Gary!!

    3. 03-30-2005 08:23 AM #3
      Anytime Jonathan.

      BTW, when are you taking me for a ride in the .:R? We're replacing brakes and flushing brake fluid this Saturday up at my place if you want to stop by. You can take us for a ride in the .:R and you can take a ride in my friend's APR Stage III 1.8T Jetta.

      Gary


    4. Banned melanotaenia's Avatar
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      03-30-2005 11:39 AM #4
      ahh yes I will definately be there, send me a PM where you live and I will come over when you guys are doing the flush

    5. 07-14-2005 02:28 PM #5
      problem solved!

      helpful post, thanks


    6. Member EvilWabbit's Avatar
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      07-14-2005 05:45 PM #6
      Are you supposed to cut those drain tube nipples or leave it as is?


      Thanks


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      07-14-2005 05:47 PM #7
      Leave them as is, or you are gonna get little critters up in them drains or debris and clog them up.
      "If no one has been offended by what you have done, you need a larger audience."

    8. Member EvilWabbit's Avatar
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      07-14-2005 06:30 PM #8
      Oops,
      I cut them.
      I live in an apartment and park the car in an underground garage, so no critters here

      BTW, i thought those were supposed to be cut. How's the water going to drain if the tubes aren't cut?

      Just a curious question


    9. Member Fugee's Avatar
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      07-14-2005 06:33 PM #9
      Thanks god I havent had problems with those...Knock on wood..the car is almost 7 years old now

    10. Member dremhmrk2's Avatar
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      07-14-2005 06:38 PM #10
      You are my hero
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      All the custom, none of the cool.
      "Trying to be the cool kid is so cool." - MkIV Scene

    11. 07-18-2005 06:08 PM #11
      what about the rear drain holes of a gti, are they in the same place? I have water stains on my right rear c pillar from the head liner to the seat noticed it at waterfest, you know how bad it rained there on sunday.

    12. Member sebastianjbauer's Avatar
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      07-18-2005 06:17 PM #12
      Mmmm... nipples.

      Nice work, Gary (as usual). I found out about these drain plugs the hard way this winter during the apocalyptic Southern California rainfall. Came back to my car one afternoon, and the rear passenger side footwell had an inch of standing water in it. Not fun. Particularly since it took a good three months to completely eliminate the odor.

      post count ≠ relevance

      They say you are what you eat, which is funny, because I don't remember eating a ****ing legend.

    13. Banned melanotaenia's Avatar
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      07-18-2005 06:51 PM #13
      Gary always has great threads about little neat things that VW incorporates into their cars.

      And oh yeah, Gary, I still owe you a ride in the .:R, 3000 miles on it and going strong!


    14. 07-19-2005 06:54 PM #14
      i checked for the rear drain nipples(ha ha) on my gti but cant find them anybody have any ideas

    15. 07-19-2005 07:24 PM #15
      Wondering the same here for the GTI.


    16. Member veedub11's Avatar
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      08-29-2005 03:51 PM #16
      good thread, hopefully it will be a fix for my problem.

    17. Senior Member abydielsgli's Avatar
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      08-29-2005 04:07 PM #17
      your the man with helping out

    18. 08-29-2005 04:13 PM #18
      I was wondering what those were for. The body shop that unsmashed my car didn't mask one of them off. Wonder if that one still drains.

      Thanks, you always out do yourself.


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      10-27-2005 07:37 PM #19
      so the gtis dont have rear drains??
      Quote Originally Posted by SLK350 View Post
      Penises have everything to do with science.

    20. Administrator BHB's Avatar
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      10-27-2005 07:44 PM #20
      another good one gary
      Current: 2011 Jeep Grand Cherokee 5.7 Hemi 4x4, 2013 BMW 650GS Sertao, BMW 1150RT
      Gone: 2010 Audi S4; 2008 GTI; 2007 Audi A6; 2004 Audi allroad 2.7T; 2001 Audi A6 2.7T; 1999.5 Mk4 Jetta VR6; 1991 Jeep Cherokee 4.0 4x4

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      10-27-2005 07:48 PM #21
      Quote, originally posted by redgeeteeeye »
      so the gtis dont have rear drains??

      yes they do..and in the same place...

      dang!! talk about "back from the dead"?!?!?!


    22. Member Gorgeous's Avatar
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      10-27-2005 07:57 PM #22
      Who 's Gary?

      I Gary.

      ...and Larry, for clarifying where the tubes are.


    23. 10-27-2005 08:13 PM #23
      so the gtis dont have rear drains??


      Yes they do.

      I had a problem with water getting into my rocker panel.

      They said that the rear window drains were blocked
      which cause water to get in there.

      They had to remove the rear fender liner to get to the drains.


    24. 10-29-2005 10:12 PM #24
      How exactly do these drains get blocked? Couldnt one just blow some compressed air through the holes to blow out all the crap that may build up in the hose?

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      10-29-2005 11:26 PM #25
      Quote, originally posted by Gorgeous »
      Who 's Gary?

      I Gary.

      ...and Larry, for clarifying where the tubes are.


      I love Gary...he's my hero!!!


    26. Member yannerz's Avatar
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      11-01-2005 01:10 PM #26
      Thanks gary my sunroof just started leaking this morn. I dont know you but love you

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      11-13-2005 10:12 PM #27
      i "pumped" the front drains and a whole bunch of nast stuff followed by water came gushing out...ohh those little vw secrets that i learn everytime i come here....ps i has a like almost mildew smell in my car and i could not figure out where it was comming from...a few days after i cleared those drains...GONE
      Quote Originally Posted by SLK350 View Post
      Penises have everything to do with science.

    28. Member vasillalov's Avatar
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      11-13-2005 10:15 PM #28
      Thats one less thing I have to worry about in my Jetta GL!

      This summer I used this DIY to clear the sunroof drains on my GF's Jetta GLS TDI!

      Quote Originally Posted by MAG58 View Post
      Please consider your audience before saying something sensible. 80% of TCL drivers were actually banned from Formula 1 for being too fast.
      A turbocharger is a device in where exhaust gases go in, witchcraft happens, and then you go faster.

    29. Senior Member idwurks's Avatar
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      01-04-2006 03:26 AM #29
      So how do I clear these drains? Is there something I can do easily or do I need to remove interior pieces? If i do, then im dealerizing it.... Someone help me out.
      Hella4 | GermanPlates | Audi TT Bild | Freelance UI/Visual Designer

    30. Member yannerz's Avatar
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      01-04-2006 03:17 PM #30
      i just pinched the nipples a little bit and some gunk and water build up came out. Just pinch the nipples you'll like it.

    31. 01-04-2006 03:29 PM #31
      yea, i've had this problem in the past, but i was out of town for 3 weeks... and it rained almost everyday those 3 weeks. Came back to a soaked carpet and the smell of Mildew. Good thing it was still under warranty! VW replaced all the carpeting for freeeeeee!

    32. Senior Member idwurks's Avatar
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      01-04-2006 04:27 PM #32
      What dealer did you go to in LA?
      Hella4 | GermanPlates | Audi TT Bild | Freelance UI/Visual Designer

    33. 01-25-2006 05:02 PM #33
      to the original poster, do u know how to re-attach the rubber nipple in the door jam to the connecting hose, mine came undone and water builds up in the foot well

      i will seriously paypal someone some money if they give me the cure to this


    34. 05-01-2006 03:06 PM #34
      many thanks for showing me the location of the front nipples- but the rear ones seem to be inaccessible - is this normal on the Mk IV Golf?

    35. 05-01-2006 05:00 PM #35
      Check the link below. It'll tell you how to find the rear drains in Golf/GTI's. For all those having prob's with leaks, you might want to check and make sure the drain tube is still connected to the sunroof drain (see link). It's an easy fix.

      http://forums.vwvortex.com/zerothread?id=2115848


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