Water ingress in passenger footwell

clarker63 · 12-09-2016, 01:52 AM

Oh dear, during my new seat install I noticed the floor was wet on the passenger footwell... I didn't notice it when I looked under the dash for the fuse box - I wonder if something has dislodged up there, or its just a door seal that has failed.

I can't find any threads on this, so I'm guessing it must be rare!

Anyone else had a similar problem? Car is a 2010, but very low miles.

paris1 · 12-09-2016, 10:38 AM

Typically when this occurs (on most A/C equipped cars), it is caused by the A/C evap tube (which normally discharges condensation underneath the car when A/C is in use) being plugged and the flow backs up into the passenger compartment. I don't know exactly how all this is plumbed on a Z4, but that would be my guess as the cause of your problem.

NoQuarter · 12-09-2016, 12:27 PM

Another place to look is to make sure the drains in the windshield cowl are not plugged.

Open the hood, and inspect the whole area where the black plastic is and where the water drains to.

And...

door drains. If you lay on the ground and look on the under side of the door with it open, there will be openings for rain water to drain out.

Bleen · 12-09-2016, 03:56 PM

Quote:

Originally Posted by clarker63

Oh dear, during my new seat install I noticed the floor was wet on the passenger footwell... I didn't notice it when I looked under the dash for the fuse box - I wonder if something has dislodged up there, or its just a door seal that has failed.

I can't find any threads on this, so I'm guessing it must be rare!

Anyone else had a similar problem? Car is a 2010, but very low miles.

Happened to me on a long trip, water ingress in passenger foot well, on the left side (transmission tunnel). Carpet was damp. AC had been on for a while, no rain. So I imagine it had to do to where the AC drained... but I honestly forgot and never looked. Curious what you find out, take pics if possible.

clarker63 · 12-12-2016, 02:22 AM

Thanks guys, I'll have a look and post the results. I tend not to run the air conditioning as it makes a bit of a racket (I think I need to get that sorted first).. I'm guessing its rain (as I'm in the UK!).

NoQuarter · 12-12-2016, 07:34 PM

It may be rain.... But still should not get inside your car. There is a reason.... Just track it down. Good luck!

12-09-2016, 01:52 AM	#1
clarker63 New Member 0 Rep 9 Posts Drives: Z4 E89 2.3i Drive Join Date: Dec 2016 Location: Devon UK iTrader: (0)	Water ingress in passenger footwell Oh dear, during my new seat install I noticed the floor was wet on the passenger footwell... I didn't notice it when I looked under the dash for the fuse box - I wonder if something has dislodged up there, or its just a door seal that has failed. I can't find any threads on this, so I'm guessing it must be rare! Anyone else had a similar problem? Car is a 2010, but very low miles.
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12-09-2016, 10:38 AM	#2
paris1 Captain 90 Rep 745 Posts Drives: 2013 35i Space Grey over Coral Join Date: Oct 2014 Location: Northern Calif. iTrader: (0)	Typically when this occurs (on most A/C equipped cars), it is caused by the A/C evap tube (which normally discharges condensation underneath the car when A/C is in use) being plugged and the flow backs up into the passenger compartment. I don't know exactly how all this is plumbed on a Z4, but that would be my guess as the cause of your problem.
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12-09-2016, 12:27 PM	#3
NoQuarter Captain 164 Rep 906 Posts Drives: 2008 535xi / 2011 Z4 35Is Join Date: Jan 2011 Location: Indiana iTrader: (0) Garage List 2018 BMW X2 [0.00] 2008 535xi [0.00] 2011 Z4 35is [0.00]	Another place to look is to make sure the drains in the windshield cowl are not plugged. Open the hood, and inspect the whole area where the black plastic is and where the water drains to. And... door drains. If you lay on the ground and look on the under side of the door with it open, there will be openings for rain water to drain out.
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12-12-2016, 02:22 AM	#5
clarker63 New Member 0 Rep 9 Posts Drives: Z4 E89 2.3i Drive Join Date: Dec 2016 Location: Devon UK iTrader: (0)	Thanks guys, I'll have a look and post the results. I tend not to run the air conditioning as it makes a bit of a racket (I think I need to get that sorted first).. I'm guessing its rain (as I'm in the UK!).
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12-12-2016, 07:34 PM	#6
NoQuarter Captain 164 Rep 906 Posts Drives: 2008 535xi / 2011 Z4 35Is Join Date: Jan 2011 Location: Indiana iTrader: (0) Garage List 2018 BMW X2 [0.00] 2008 535xi [0.00] 2011 Z4 35is [0.00]	It may be rain.... But still should not get inside your car. There is a reason.... Just track it down. Good luck!
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