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Old 10-19-2013, 06:24 PM   #1
sgoldste01
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Default Water leak on front passenger floor mat

2012 Sport Premium hatchback. No sunroof.

Just went through the car wash, and then discovered a puddle of water on the passenger-side front floor mat. When I reach behind the glove box, I can feel that the outside of the blower motor is wet, so that gives you an idea of where the water is flowing. Since it happened after the car wash, we can rule out a leak from the heater core, and we can also rule out A/C condensate because I didn't have the A/C running today.

I guess that's one advantage of all-weather mats--I probably wouldn't have noticed this problem if the water was able to soak into carpeting.

Has anyone else experienced this? Is there a drainage path that I should be checking for blockage?

Just thought I'd ask here to see if there's an easy solution before I schedule an appointment with the dealer.
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Old 10-21-2013, 11:50 AM   #2
flyboy1100
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the only drainage path i can think of is the bottom right corner of the windshield, where all that water is supposed to drain. if it is plugged, then it will get under the plastic cover and into the air intake
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Old 10-21-2013, 12:59 PM   #3
sgoldste01
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the only drainage path i can think of is the bottom right corner of the windshield, where all that water is supposed to drain. if it is plugged, then it will get under the plastic cover and into the air intake
Could be. I have an appointment at my dealership to drop off the car tomorrow night for a Wednesday repair. I'll report back and let everyone know what they found.
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Old 10-23-2013, 09:24 PM   #4
sgoldste01
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Well, dealer couldn't reproduce the leak, so they cleaned out the A/C drainage tube even though I told them that the leak occurred after driving through the car wash, and that I didn't have the A/C running all day (including not putting the car in any of the defog modes).

So I'll pick up the car tomorrow, and then drive directly to the car wash to see what happens. Not optimistic about this.
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Old 10-30-2013, 08:48 AM   #5
sgoldste01
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Well, three trips through the car wash did not cause the leak to re-occur, so I can't explain how that water got into the passenger compartment via a path behind the glove box.

Perhaps it was an A/C drainage clog, but I'm very skeptical of this. Is it possible that if the car wash attendent who hand-sprayed my car caused this? Let's say my front bumper had a lot of bugs on it, which cause the attendent to heavily spray water in through the grill. Is it possible for water to get into the air intake that leads to the cabin air filter and ultimately the blower motor? Where does the outside air come from that gets blown into the cabin? I thought it was at the base of the windshield, but that must be blocked well from water or our interiors would get wet every time we drive through a rain storm.

I just can't figure out how the water got there, and the dealership and I can't reproduce it.

Anyway, the water damaged the blower motor, causing it to hum loudly, so the car is back at the dealer today getting the blower motor replaced. My loaner car is an Impreza Limited sedan with CVT. I'm sure if I wasn't determined to drive a stick, this car could satisfy my needs. It's nice.
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Old 10-30-2013, 09:59 AM   #6
flyboy1100
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Quote:
Originally Posted by sgoldste01 View Post
Well, three trips through the car wash did not cause the leak to re-occur, so I can't explain how that water got into the passenger compartment via a path behind the glove box.

Perhaps it was an A/C drainage clog, but I'm very skeptical of this. Is it possible that if the car wash attendent who hand-sprayed my car caused this? Let's say my front bumper had a lot of bugs on it, which cause the attendent to heavily spray water in through the grill. Is it possible for water to get into the air intake that leads to the cabin air filter and ultimately the blower motor? Where does the outside air come from that gets blown into the cabin? I thought it was at the base of the windshield, but that must be blocked well from water or our interiors would get wet every time we drive through a rain storm.

I just can't figure out how the water got there, and the dealership and I can't reproduce it.

Anyway, the water damaged the blower motor, causing it to hum loudly, so the car is back at the dealer today getting the blower motor replaced. My loaner car is an Impreza Limited sedan with CVT. I'm sure if I wasn't determined to drive a stick, this car could satisfy my needs. It's nice.
The air intake for the cabin is the "mesh" built into the plastic fairing under wiper arms.
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Old 10-30-2013, 10:57 AM   #7
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The air intake for the cabin is the "mesh" built into the plastic fairing under wiper arms.
OK. Do you see any way for a car wash (or attendant with a spray wand) to flood that mesh area to the point of pushing water into the passenger compartment?
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Old 10-30-2013, 11:35 AM   #8
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OK. Do you see any way for a car wash (or attendant with a spray wand) to flood that mesh area to the point of pushing water into the passenger compartment?
Yes, if the stream is directed that way, the evap drain is really small so it could over fill that area, then it runs into the rest of the ducting and the blower.
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Old 10-30-2013, 12:08 PM   #9
sgoldste01
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I wonder how that doesn't happen every time I go through the car wash, or drive through a downpour.
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Old 10-30-2013, 01:28 PM   #10
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Originally Posted by sgoldste01 View Post
I wonder how that doesn't happen every time I go through the car wash, or drive through a downpour.
there must be drain in there, but I'm guessing the angle was just right and there was enough water directed in that it happened.
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Old 02-11-2014, 08:56 AM   #11
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This water leak happened again after driving through the car wash. If it's just a defect in the car's design, then I don't think there's a fix. But I can imagine a lot of blower fans getting destroyed over time, since they aren't designed to get wet.
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Old 02-11-2014, 09:31 AM   #12
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Quote:
Originally Posted by sgoldste01 View Post
This water leak happened again after driving through the car wash. If it's just a defect in the car's design, then I don't think there's a fix. But I can imagine a lot of blower fans getting destroyed over time, since they aren't designed to get wet.
Did you look under there, is the fan wet? Pull your filter too.

If those aren't wet, not sure what else it could be since the evap drain is under the carpet
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Old 02-11-2014, 09:50 AM   #13
sgoldste01
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Did you look under there, is the fan wet? Pull your filter too.

If those aren't wet, not sure what else it could be since the evap drain is under the carpet
Yes, when I reach under the passenger-side dash, the outside of the fan motor is wet. I didn't take the time to remove the glove box and see if the cabin air filter was wet too.
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Old 02-11-2014, 10:37 AM   #14
flyboy1100
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Originally Posted by sgoldste01 View Post

Yes, when I reach under the passenger-side dash, the outside of the fan motor is wet. I didn't take the time to remove the glove box and see if the cabin air filter was wet too.
If the fan is wet, the car wash is directing water just perfectly to get into the cabin intake. Other than covering it before the car wash or finding a different car wash, I don't know what you can do
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Old 02-11-2014, 01:04 PM   #15
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Ice causing a temporary blockage, defrosted while in the service bay maybe.
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Old 02-15-2014, 06:21 PM   #16
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maybe it's coming through your firewall?
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Old 02-15-2014, 06:27 PM   #17
sgoldste01
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maybe it's coming through your firewall?
Maybe, but not likely. I think it's coming through the ventilation system.
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Old 02-20-2014, 09:16 AM   #18
flyboy1100
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Any chance you want to pull your hvac control and see what this plug looks like? I'm curious since both of our fans have been wet, they may be drawing more current than designed and you might also be burning out your controls too


http://forums.nasioc.com/forums/show....php?t=2602104
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Old 02-20-2014, 09:42 AM   #19
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There is a drain and it has happened to me before. look where your windshield wipers start and see if that is clear
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Old 02-20-2014, 10:42 AM   #20
sgoldste01
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Originally Posted by flyboy1100 View Post
Any chance you want to pull your hvac control and see what this plug looks like? I'm curious since both of our fans have been wet, they may be drawing more current than designed and you might also be burning out your controls too


http://forums.nasioc.com/forums/show....php?t=2602104
If my car was out of warranty, I'd be more motivated to do this. But for now, I'm still covered (car is 20 months old with 25k miles), so if my car develops an electrical problem I'll just let the dealer take care of it.
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