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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 07-08-2013, 03:31 PM   #1
xDLXSFx
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Join Date: May 2012
Location: MN
Posts: 50
My Ride: 2002 325xi
Wet floor; stupid cause.

After several nights of rain; I noticed some paper work of mine that was wet sitting in the back floor of my Xi. The whole driver-side rear floor was soaked and ONLY that side. First assuming I have a leak, I did the research and checked everything from Vapor Barriers to sun roof leaks, etc. Didn't find any leaks. Another night, same thing; only this time I had my car parked inside; drove home and it was wet again! Hmm.. So i decided to lift up the carpet and see what the hell is going on; sure enough, first thing I see, a rubber grommet thing loosely plugging a hole in the rear foot-well - just dangling there. I am very sure that this is where water is seeping through when I drive. My question is though, why the hell would BMW put these damn plugs here and not just have it sealed off?! To drain your car after you drive in a foot of water?! Who wold do that? I love BMW's to death, but somethings just don't make sense what they do. (Breather hole in the ATF cap?)

Don't know if anyone else on here encountered this lovely predicament, but is quite an inconvenient thing to have there. Just gonna clean-up and use silicon sealant to seal that b*tch right up.
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Old 07-09-2013, 10:28 PM   #2
CK325
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Join Date: Sep 2012
Location: Philadelphia, PA
Posts: 488
My Ride: 323Ci, 325xi
don't remember exactly what they're for, but my old 240 had 'em as well as my friend's toyota...forgot which one. So I'm assuming a decent amount of cars have them.
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Old 07-15-2013, 11:32 AM   #3
Hogan773
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Join Date: Jul 2009
Location: Chicago
Posts: 790
My Ride: 2002 325xi
IIRC they are supposed to be "one way" drains so if water somehow got down there it would go out, but it is supposed to protect from water splashing up from below.

Our 325xi had one that was cracked/broken and one time when I was an idiot and did a "splash through" on a big puddle during a flood, my rear carpet was soaked for days. Had to open it up and put fans on it. All that nice soundproofing foam makes a good sponge.

I don't drive through puddles on purpose any more!
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