Water Leak into cabin?

Who? · 01-01-2015, 06:22 AM

Hey guys,

it rained heavily last night, and this morning as I was cleaning my interior, I noticed both rear passenger carpet (and floor) were really wet. Has anyone come across this?

Is this a common problem, any fixes I can try before I head to the dealer?

Pretty crappy for a less than 2 year old car with no accidents

Thanks

RoundelM3 · 01-02-2015, 08:55 AM

Just make sure your sunroof is completely closed. Aside from that, it's not a common problem.

USC2000 · 01-02-2015, 10:21 AM

Also double check that the rear windows were all the way up. A couple of times I've hit the button which lowers the windows slightly but they look like they are still closed. Then when I'm driving I hear more wind noise and end up pulling up on all the switches and I find the window that was barely open.

bri1042 · 01-02-2015, 01:29 PM

Also, make sure you haven't angered any magicians lately...someone may have conjured a minor water elemental to harass you.

Lost Horizon · 01-02-2015, 05:04 PM

Quote:

Originally Posted by SJ00

Hey guys,

it rained heavily last night, and this morning as I was cleaning my interior, I noticed both rear passenger carpet (and floor) were really wet. Has anyone come across this?

Is this a common problem, any fixes I can try before I head to the dealer?

Pretty crappy for a less than 2 year old car with no accidents

Thanks

[Edit for clarity] > Is there an SB for the Drain Grommet on your build? If so, sounds like that could be the problem as that's the symptom for it, especially if you live in a humid fungus growing climate.

See this thread..

Want the thrill · 01-02-2015, 09:31 PM

If you have a sunroof it could be clogged sunroof drains. If not, then you probably have a door or two with bad vapor barriers. Both are very common problems with BMW's. Google it.

live4wknds · 01-03-2015, 05:16 AM

I had this problem when I would wash my car. Rear foot well carpet behind driver seat would get very damp. Dealer found a tear in the plastic sheet (vapor barrier?) inside the door and did warranty replace. Problem solved.

geoff7877 · 01-04-2015, 06:28 PM

If it's on the floor only, the moisture barriers in the doors have failed and water leaks in.

davkar · 07-17-2015, 11:49 AM

Having the same issue. Did you get it fixed?

Who? · 07-18-2015, 06:51 AM

Quote:

Originally Posted by davkar

Having the same issue. Did you get it fixed?

I had 2 issues:

1) AC water pipe was leaking, and got a new ac unit
2) door seal was replaced

not sure which was the cause

Haven't really rained that heavily since, so I'm not 100% sure the problem was resolved

davkar · 07-23-2015, 03:25 AM

Removed the door panel yesterday and found that the vapor barrier was the reason in my case. I reheated the adhesive stuff with a hairdryer and stuck it back. Hopefully this will be the end of the wet carpet..

01-01-2015, 06:22 AM	#1
Who? Colonel 485 Rep 2,197 Posts Drives: F87 LCI Join Date: Nov 2012 Location: Brisbane iTrader: (0)	Water Leak into cabin? Hey guys, it rained heavily last night, and this morning as I was cleaning my interior, I noticed both rear passenger carpet (and floor) were really wet. Has anyone come across this? Is this a common problem, any fixes I can try before I head to the dealer? Pretty crappy for a less than 2 year old car with no accidents Thanks __________________ So far: 200cell downpipe, custom exhaust, lifhtweight splitter, m4 comp seats
	Appreciate 0 Tweet Quote

01-02-2015, 08:55 AM	#2
RoundelM3 Major General 1834 Rep 6,989 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	Just make sure your sunroof is completely closed. Aside from that, it's not a common problem. __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
	Appreciate 0 Quote

01-02-2015, 10:21 AM	#3
USC2000 Lieutenant Colonel 127 Rep 1,604 Posts Drives: F30 328i M Sport Join Date: Jul 2007 Location: El Paso, TX iTrader: (10)	Also double check that the rear windows were all the way up. A couple of times I've hit the button which lowers the windows slightly but they look like they are still closed. Then when I'm driving I hear more wind noise and end up pulling up on all the switches and I find the window that was barely open. __________________ 2014 Alpine White 328i M Sport \| M Performance Exhaust \| M Performance Front Splitter \| M Performance Carbon Fiber Spoiler \| M Performance Grills \| M Performance Pedals[/SIZE] ______________________
	Appreciate 0 Quote

01-02-2015, 01:29 PM	#4
bri1042 Brigadier General 5921 Rep 3,286 Posts Drives: 2021 IOMG M3 6MT Join Date: Mar 2013 Location: Portland, OR iTrader: (0)	Also, make sure you haven't angered any magicians lately...someone may have conjured a minor water elemental to harass you.
	Appreciate 0 Quote

01-02-2015, 09:31 PM	#6
Want the thrill Lieutenant Colonel 330 Rep 1,560 Posts Drives: 2022 X4M40i, retired ‘11 X3 Join Date: Mar 2011 Location: MI iTrader: (2) Garage List 2022 X4M40i [10.00]	If you have a sunroof it could be clogged sunroof drains. If not, then you probably have a door or two with bad vapor barriers. Both are very common problems with BMW's. Google it.
	Appreciate 0 Quote

01-03-2015, 05:16 AM	#7
live4wknds Private First Class 10 Rep 155 Posts Drives: 2012 328i Join Date: Apr 2012 Location: So Cal iTrader: (0)	I had this problem when I would wash my car. Rear foot well carpet behind driver seat would get very damp. Dealer found a tear in the plastic sheet (vapor barrier?) inside the door and did warranty replace. Problem solved.
	Appreciate 0 Quote

01-04-2015, 06:28 PM	#8
geoff7877 Private First Class 18 Rep 98 Posts Drives: 428i M Sport 6MT Join Date: Jan 2015 Location: Northern CA iTrader: (0)	If it's on the floor only, the moisture barriers in the doors have failed and water leaks in.
	Appreciate 0 Quote

07-17-2015, 11:49 AM	#9
davkar New Member 5 Rep 16 Posts Drives: F31 320D -14 Join Date: Jul 2015 Location: Sweden iTrader: (0)	Having the same issue. Did you get it fixed?
	Appreciate 1 Quote

07-23-2015, 03:25 AM	#11
davkar New Member 5 Rep 16 Posts Drives: F31 320D -14 Join Date: Jul 2015 Location: Sweden iTrader: (0)	Removed the door panel yesterday and found that the vapor barrier was the reason in my case. I reheated the adhesive stuff with a hairdryer and stuck it back. Hopefully this will be the end of the wet carpet.. Last edited by davkar; 07-28-2015 at 05:53 AM..
	Appreciate 0 Quote