Wet Floor!

ChiefTingle · 01-24-2019, 08:26 PM

The F80 has a problem with being wet under the floor mat in the rear passenger spot. I thought it was a water bottle busted under the seat or a Red Bull can letting loose, but the car was sitting for a while with no use at all. It rained real good on the east coast today and the floor is wet. Door closed, windows closed and door seals seem to be in good shape. Where should I be looking for the inflow of water? I need help.

Monteblueem5 · 01-24-2019, 08:52 PM

Does the car have a sunroof

ChiefTingle · 01-24-2019, 08:54 PM

No sunroof.

jailonacs99 · 01-24-2019, 09:34 PM

Sunroof was my first guess too, I used to get clogged drains on my old E46 and it leaked into the cabin and trunk.

I imagine somewhere along the roof lines or upper window seals still must be the problem. Double check there's no water in the trunk too.

Pauldunlop13 · 01-25-2019, 04:21 PM

Has the windshield been replaced? That is when it happened to one of my previous cars. Got the rear floor wet which made it even harder to troubleshoot

BzsBimmer · 01-26-2019, 08:15 PM

Is the car under warranty, is the first question I’d ask. If so, take it to dealer. If not, remove all of the flooring and dry it out.

Once dry, start looking for source. You’ll need to dry it out regardless or you’ll have a higher chance of mold setting in.

ChiefTingle · 01-26-2019, 09:01 PM

it's frozen right now.

sandwi54 · 01-26-2019, 11:56 PM

You may have an AC drain line leak or clogged so the water goes into the passenger footwell.

damageprone · 01-28-2019, 12:59 AM

Quote:

Originally Posted by Pauldunlop13

Has the windshield been replaced? That is when it happened to one of my previous cars. Got the rear floor wet which made it even harder to troubleshoot

This happened to me on one of my other car's windshields as well. They didn’t seal the windshield properly and had to replace the new windshield again with another one.

Danny271 · 01-19-2022, 08:58 AM

Reviving an old thread.

I just purchased an F83 M4 from a BMW dealer in Memphis. They replaced the windshield prior to shipping the vehicle to me. I replaced the floor mats the other day and noticed that the bottom of the passenger front mat had ice on it.

How do I determine if the water is entering the vehicle from the windshield OR a blocked side skirt drain?

Thanks!

BzsBimmer · 01-19-2022, 09:21 AM

F83 have had issues with roof seals as well

damageprone · 02-02-2022, 01:42 PM

Quote:

Originally Posted by Danny271

Reviving an old thread.

I just purchased an F83 M4 from a BMW dealer in Memphis. They replaced the windshield prior to shipping the vehicle to me. I replaced the floor mats the other day and noticed that the bottom of the passenger front mat had ice on it.

How do I determine if the water is entering the vehicle from the windshield OR a blocked side skirt drain?

Thanks!

You can take compressed air to the inside of the windshield seam. Place a piece of tissue on the opposite side on the outside and blow. If air is getting through the paper will indicate a leak.

Danny271 · 02-02-2022, 04:37 PM

I took it to the dealer. The vapor barrier behind the passenger door panel had come unglued in some spots. They charged $800+ to air out the carpet for a few days and apply new sealant to the vapor barrier.

This was covered by the selling dealer as I just took delivery of the car very recently.

01-24-2019, 08:26 PM	#1
ChiefTingle Enlisted Member 7 Rep 41 Posts Drives: 15 F80 MW, DCT Join Date: Jul 2014 Location: Philly Philly iTrader: (0)	Wet Floor! The F80 has a problem with being wet under the floor mat in the rear passenger spot. I thought it was a water bottle busted under the seat or a Red Bull can letting loose, but the car was sitting for a while with no use at all. It rained real good on the east coast today and the floor is wet. Door closed, windows closed and door seals seem to be in good shape. Where should I be looking for the inflow of water? I need help.
	Appreciate 0 Tweet Quote

01-24-2019, 08:52 PM	#2
Monteblueem5 Second Lieutenant 85 Rep 284 Posts Drives: 13 m5 Join Date: Oct 2017 Location: Brooklyn ny iTrader: (0)	Does the car have a sunroof
	Appreciate 0 Quote

01-24-2019, 08:54 PM	#3
ChiefTingle Enlisted Member 7 Rep 41 Posts Drives: 15 F80 MW, DCT Join Date: Jul 2014 Location: Philly Philly iTrader: (0)	No sunroof.
	Appreciate 0 Quote

01-24-2019, 09:34 PM	#4
jailonacs99 Captain 484 Rep 793 Posts Drives: 2022 M4 xDrive Competition Join Date: May 2014 Location: Mid-Atlantic iTrader: (2) Garage List 2022 BMW M4 MxDrive ... [0.00]	Sunroof was my first guess too, I used to get clogged drains on my old E46 and it leaked into the cabin and trunk. I imagine somewhere along the roof lines or upper window seals still must be the problem. Double check there's no water in the trunk too.
	Appreciate 0 Quote

01-25-2019, 04:21 PM	#5
Pauldunlop13 Second Lieutenant 425 Rep 286 Posts Drives: M4 Convertible Join Date: Sep 2017 Location: Colorado iTrader: (1)	Has the windshield been replaced? That is when it happened to one of my previous cars. Got the rear floor wet which made it even harder to troubleshoot __________________ 2019 YMB ZCP convertible with Dinan Exhaust 2011 Ducati Diavel Carbon Edition 2015 BSM M4 Convertible - 2018-2019 2016 228Xi - 2017-2018 2003 Acura RSX Type S 2003-2017
	Appreciate 0 Quote

01-26-2019, 08:15 PM	#6
BzsBimmer Major General 3267 Rep 6,722 Posts Drives: '23 G80 FO M3, M3 & MY Tezzy's Join Date: Mar 2006 Location: Nor. Cal iTrader: (32)	Is the car under warranty, is the first question I’d ask. If so, take it to dealer. If not, remove all of the flooring and dry it out. Once dry, start looking for source. You’ll need to dry it out regardless or you’ll have a higher chance of mold setting in.
	Appreciate 0 Quote

01-26-2019, 09:01 PM	#7
ChiefTingle Enlisted Member 7 Rep 41 Posts Drives: 15 F80 MW, DCT Join Date: Jul 2014 Location: Philly Philly iTrader: (0)	it's frozen right now.
	Appreciate 0 Quote

01-26-2019, 11:56 PM	#8
sandwi54 Major 538 Rep 1,201 Posts Drives: G07, F90 Join Date: Sep 2014 Location: California iTrader: (1)	You may have an AC drain line leak or clogged so the water goes into the passenger footwell. __________________ 2022 X7 M50i Phytonic Blue 2019 M5 MBB (wife's DD)
	Appreciate 0 Quote

01-19-2022, 08:58 AM	#10
Danny271 Second Lieutenant 18 Rep 201 Posts Drives: 2009 E93 M3 Join Date: Jun 2008 Location: Scarsdale, NY iTrader: (0)	Reviving an old thread. I just purchased an F83 M4 from a BMW dealer in Memphis. They replaced the windshield prior to shipping the vehicle to me. I replaced the floor mats the other day and noticed that the bottom of the passenger front mat had ice on it. How do I determine if the water is entering the vehicle from the windshield OR a blocked side skirt drain? Thanks!
	Appreciate 0 Quote

01-19-2022, 09:21 AM	#11
BzsBimmer Major General 3267 Rep 6,722 Posts Drives: '23 G80 FO M3, M3 & MY Tezzy's Join Date: Mar 2006 Location: Nor. Cal iTrader: (32)	F83 have had issues with roof seals as well
	Appreciate 0 Quote

02-02-2022, 04:37 PM	#13
Danny271 Second Lieutenant 18 Rep 201 Posts Drives: 2009 E93 M3 Join Date: Jun 2008 Location: Scarsdale, NY iTrader: (0)	I took it to the dealer. The vapor barrier behind the passenger door panel had come unglued in some spots. They charged $800+ to air out the carpet for a few days and apply new sealant to the vapor barrier. This was covered by the selling dealer as I just took delivery of the car very recently.
	Appreciate 0 Quote