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      04-04-2014, 09:01 PM   #1
BigBoosting
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Water in footwell with A/C on

I have a 09' E92 M3 6MT. On a several hour trip a few weeks ago I noticed that both my front floor mats were soaked. It was raining at that time so I assumed I had a leak that was letting rain water in.

Today with no rain in site and driving with the A/C on I noticed the floor mats started becoming wet again. I could also see where water had run down on the sides of the center console under the radio area.

While searching I have seen some suggestions of a clogged A/C drain tube, but I can still see water dripping from the normal location under my car? Could the drain be partially blocked and cause this problem?

Any other ideas?
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      04-04-2014, 10:16 PM   #2
kenwelch
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A partially clogged drain will cause the overflow and leaks inside the car. With cabin air filters usually the evaporator housing stays clean, no leaves, bugs, and humming birds. There is a chance that somethings came loose inside like a label or evaporator fin. Sometimes kids like to push things in the outlets in the dash and those find their way in to the housing. Then there are also drivers that to send trash down the defrost outlets near the windshield.
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      04-06-2014, 11:44 AM   #3
whats77inaname
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Had this happen on one of my other cars once upon a time. Drain tube was partially clogged = water inside the car & water outside the car.

Not fun.
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      04-06-2014, 01:41 PM   #4
BigBoosting
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Quote:
Originally Posted by whats77inaname View Post
Had this happen on one of my other cars once upon a time. Drain tube was partially clogged = water inside the car & water outside the car.

Not fun.
Thats exactly what it was. I pulled the heatsheild off the bottom and found the drain tube. The rubber valve on the end was partially clogged with junk. Cleared it and so far so good.
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      04-06-2014, 03:00 PM   #5
whats77inaname
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Quote:
Originally Posted by BigBoosting View Post
Thats exactly what it was. I pulled the heatsheild off the bottom and found the drain tube. The rubber valve on the end was partially clogged with junk. Cleared it and so far so good.
Glad you got that squared away. Now you have to get all the residual moisture out. Might want to let the car sit with the windows up with a couple boxes of baking soda or containers of DampRid inside of it.
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