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E46 Convertible
The E46 vert forum. Talk about dropping your E46 top here.

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Old 03-30-2015, 12:01 PM   #1
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Join Date: Jul 2014
Location: New Jersey
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My Ride: '01 325Ci Vert
Water Leaking into Trunk

Hey guys, I've been having a problem with water getting into the trunk of my vert. The water collects in the spare tire compartment and underneath the battery. It's a huge pain to vacuum out.
I have no idea where the water is getting in from. I have checked the compartment that stores the top, and it's always completely dry. Has anyone else experienced this?
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Old 03-31-2015, 10:43 AM   #2
///Motorcepts ///Maintained
Join Date: May 2009
Location: Hempstead, NY
Posts: 1,945
My Ride: '02 330 Vert-'06 4.4
Not as of yet, Knock on wood. Check your weather stripping. Make sure its clean and clear of all debris or anything causing it not to make 100% contact. Clean out any debris if any in the drain areas. If that doesnt solve your problem pull out as much of your trunk lining on the battery side, close the trunk and spray some water on the trunk and look to see where it may be leaking from. Hope that helps. Also make sure your roof is seated cleanly on the base in the back.

Last edited by SMUUUUUV; 03-31-2015 at 10:51 AM.
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Old 03-31-2015, 05:29 PM   #3
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I had this exact same problem and it was the gasket on the taillights!!!

2002 Carbon Black ///M3 - current
2002 Stahlgrau ///M3 - RIP
2001 325i - sold

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Old 03-31-2015, 06:23 PM   #4
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My Ride: 2006 E46 M3 Vert
Could be the drains. http://forum.e46fanatics.com/showthr...vertible+drain
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Old 03-31-2015, 10:29 PM   #5
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mrich, that sounds like it could be the problem. Thanks a ton!
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Old 03-31-2015, 10:33 PM   #6
The Thomas J
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My Ride: 2002 325Cic
My leak was from the passenger tail light.
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Old 04-01-2015, 03:28 PM   #7
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Location: Switzerland/Poland
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My Ride: E46 Cabrio
I got the same problem last year, I found out it were drain holes, but i didnt clean them like the man from mrich777 link have. try to go to petrol station and use a tire compressor, pressure should be strong enough to clean the top, mostly the are old leaves or just sticky dirt. For me it worked, after a year no water in trunk.
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Old 04-03-2015, 06:52 AM   #8
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I've had simular problem with my previous 323ci ragtop leaking water into the boot/ trunk, I found that the horse-shoe cover/parcel shelf was clipping/dislodged the boot rubber seal ever so slightly when the softop was being operated in either direction. I simply reseated/popped the boot rubber seal back in to place and I never had the problem of water leaking into the boot/trunk again! Hope this is helpful?
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Old 04-03-2015, 10:31 AM   #9
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Theres 4 plugs in the donut area.....pull 1 of those to @ least get the standing water out while U track the leak down.
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Old 04-19-2015, 09:45 AM   #10
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Location: Roanoke, VA
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My Ride: 2002 325Ci Conv
I've had 2 different leak issues. The first was the rear seats were soaked following heavy rains. I tracked this down to issues with the drain holes in the convertible top boot. These are the holes that are toward the front portion of the boot, underneath where the roof attaches to the frame. Getting to them is difficult so I poured some mild Draino type product in there, let it sit for a few minutes and flushed it with not water. Worked like a charm and have't had the issue since. It was amazing how much muck come out of there when I flushed it out. Probably a good, simply preventative measure to take. Some may say it's a bad idea to pour Draino in there but oh well.

I had the same issue you are describing and could never track down the source with certainty. I have inspected everything as others have described in this post except the taillight issue (that's a new one since I last had the problem). I cleaned all the debris out, checked all the gaskets, etc. The problem goes away for awhile and them randomly comes back. Next time it happens, I'll check the taillights.
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