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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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  #1  
Old 06-03-2013, 07:12 PM
750driver 750driver is offline
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2007 BMW x3 water on floor of rear passenger carpet

Had a lot of rain today and when I got in my wife's x3 she noticed when she put our son on the car seat that there was water on the carpet of the rear passenger side floor. Upon further inspections noticed everything else in the car was dry but that spot was the only place that had water. Does anyone know how in the world water would get there? All windows were up, no water on the door or anything else n that side just on the floor and have no clue how it got there, any help would be greatly appreciated, thanks
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  #2  
Old 06-03-2013, 07:24 PM
Want the Thrill Want the Thrill is offline
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Bad vapor barrier on the door. Very common on BMW's. That and clogged sun roof drains cause 99% of the leaks in them.

Last edited by Want the Thrill; 06-03-2013 at 07:25 PM.
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  #3  
Old 06-03-2013, 07:29 PM
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cagui1223 cagui1223 is offline
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Also had a lot of rain in CT and water pooled up in the passenger foot-well. Turns out the drain plug was clogged. Locating it is easy, explains where it is is difficult. Hmm, if u stand directly in front of the passenger side-view mirror, get underneath the car and you'll find the soft rubber plug. No need to jack the car up. Search the forums because this topic has been covered extensively.
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  #4  
Old 06-04-2013, 02:32 AM
Burning2nd Burning2nd is offline
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  #5  
Old 06-04-2013, 06:57 AM
Grabby544 Grabby544 is offline
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Re: 2007 BMW x3 water on floor of rear passenger carpet

Anyone have any pics of the drains?

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  #6  
Old 06-04-2013, 09:45 AM
750driver 750driver is offline
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Took door panel off and vapor barrier was halfway peeled off, where do I get a new vapor barrier? Called dealership and they have to order it,any local auto parts store have them in stock?
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  #7  
Old 06-04-2013, 10:25 AM
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cagui1223 cagui1223 is offline
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Some users said they were able to reactivate the original adhesive by using a heat gun or blow dryer. Others have used 3M tap to seal it back up.

Last edited by cagui1223; 06-04-2013 at 10:26 AM. Reason: Grammatical error
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  #8  
Old 06-04-2013, 11:30 AM
750driver 750driver is offline
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My vapor barrier is cracked in the middle which is why I needed a new one or am I wrong?
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  #9  
Old 06-04-2013, 01:01 PM
al_macaroni al_macaroni is offline
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The vapor barrier will have some cuts in it approximately 3" long so the power window wires and the door handle release cable can make their way to the interior door panel.

If the rips or cuts are greater than 3"- 4" and there are no wires or cables coming through them, then maybe you need to replace the vapor barrier. This is a part that is made specifically for BMWs. I would not expect an auto parts store to carry it.

I have read that some people have made their own using thick plastic sheeting. I would be more inclined to try to patch the torn vapor barrier. Duct tape might work or 3M automobile molding tape. Another option might be to try Xtreme Dynamat (speaker kit) to seal the crack. It runs anywhere from $15 - $25 for the speaker kit. This is a 10" x 10" sheet of very thin, very sticky rubber material that seems to stick to everything. It should be able to stick to the vapor barrier. If you don't want to order from the dealer, you could also look into using the Xtreme Dynamat door kit to make your own vapor barrier.

I had a similair leak and was able to use a heat gun to reactivate and make sticky the exitsting butyl tape that holds the vapor barrier to the door. If you need to replace the butyl tape, 3M Window Weld looks like it is the exact same product.
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Last edited by al_macaroni; 06-04-2013 at 01:02 PM.
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  #10  
Old 06-04-2013, 01:08 PM
al_macaroni al_macaroni is offline
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This is what my front door vapor barrier looks like. I would think that your rear door should look similiar.
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  #11  
Old 06-04-2013, 02:34 PM
PSUEng PSUEng is offline
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I had a leak in my rear driver door vapor barrier. It was at the bottom of the barrier, the sealant had separated from the door metal. I repaired it by using a 3M window install kit sealant bead and a hair dryer, in the area where the original sealant disbonded. I would NOT suggest tearing out the vapor barrier unless it is torn--even then, I'd try a repair before replacement. Before you take the door panel off, open the door and pour water down the outside of the door where the window meets the door frame and see if you are leaking water between the the door liner and door--that will tell you you have a leaky vapor barrier.
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  #12  
Old 06-07-2013, 10:48 AM
750driver 750driver is offline
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Just an update, replaced vapor barrier sprayed a ton of water on the window from outside of car but all is dry inside, no water which I assume problem is fixed. However I was curious because that same window gets a little foggy at the bottom of it when I was spraying water on it, I tried it on the other three windows and they didn't get foggy at all. Does anyone know why it could be getting foggy and not the other ones, as I said its only a little bit at the bottom of it when you spray water on it but the inside of the door and car is completely dry? From my understanding the little bit of foggy ness is condensation but the inside is dry, should I even worry?

Last edited by 750driver; 06-07-2013 at 10:50 AM.
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  #13  
Old 06-07-2013, 03:08 PM
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sixspeedz sixspeedz is offline
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I've got water in the right side storage compartment located in the trunk. I see that it's coming out of the side removable lid which covers up the drainage tube... water is dripping from up top somewhere though, i'm guessing clogged drains by the glass panels, but i don't know where they are or how to clean them.

Anyone with experience on this one?
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  #14  
Old 06-08-2013, 05:40 AM
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X3emist X3emist is offline
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Body Shop

Any good body shop can fix this for you. Had mine done for about $50 way back when.
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  #15  
Old 09-07-2013, 02:47 PM
FensterB FensterB is offline
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Vapor Barrier

Can someone explain this to me please? my '04 was suffering from the same problem on my rear driver side door. After some research I was able to confirm that water was indeed leaking from my vapor barrier. It turns out that if I spray water on the "smaller window area (the part of the glass window that does not roll down), water would trickle out between my door and my door panel. When I took the door panel off I was able to see that in several places, especially the hole near the top, the vapor barrier had come loose. The water was coming into the door via the window, and then trickling out the top hole in the door frame. I took some Gorilla tape and just tapde up over that hole, and then taped the vapor barrier on top of that. What I dont understand is why this is assumed that water is supposed to enter the door like this. There are electronics in the door frame, And there is no drain for the water to come out of the bottom of the door once it is in the door. On my X3 actually, it looks like somebody punched a hole in the bottom of the door in order for this water to drain. None of the other doors have these holes.

So can anyone confirm that water is supposed to come in the door or is this a malfunctioning window seal that people are just assuming is supposed to leak. By sealing the vapor barrier, we are essentially just sealing this water in the door frame.

Thanks for the help!

Last edited by FensterB; 09-07-2013 at 02:48 PM.
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