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Sienna Water Leaks

53 messages,  Last post on Nov 17, 2009 at 4:40 AM

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What is this discussion about? Toyota Sienna, Auto Body, Van


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#1 of 53
Sienna Water Leaks by dkp
Apr 17, 2007 (11:51 am)
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My 2002 Sienna has water pooling in the front passenger side. We pulled up some of the front carpet and it's soaking beyond the passenger side. We need to find out where the water is coming from. It correlates to rain, but we tried hosing the passenger door and front windshield but didn't see any water coming in. Anyone have a similar problem?
#2 of 53
Re: Sienna Water Leaks [dkp] by rayngal619
Apr 30, 2007 (6:58 am)
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Replying to: dkp (Apr 17, 2007 11:51 am)

I have the exact same problem. Took it to a dealership and they are saying they can't get it to leak and don't know where it is coming from. Did you ever get resolution to your leak?
#3 of 53
Re: Sienna Water Leaks [rayngal619] by dkp
Apr 30, 2007 (7:19 am)
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Replying to: rayngal619 (Apr 30, 2007 6:58 am)

We're still working on figuring this out. So far, we have removed the carpeting from the entire car to dry it out. It was soaking wet from front to back. We're driving without carpeting now and can more easily observe what is going on. We suspect that the water is getting in from the rear hatch, and sloshing around to cause everything to be wet. Rainy days are more helpful than the hose test. But the hose test in the rear hatch seemed to show a little water getting in...but possibly most of the water is hidden between the door and plastic molding and only becomes visible when the car is in motion. If you find out anything, let me know and I'll do the same. Good luck!
#4 of 53
Sienna Vent Smells by jimlee
Jun 21, 2007 (4:14 am)
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We got an 05 sienna that just started having a fruity, rotten smell coming from the dash vents. It worst when we first use the van and then seems to get better after driving awhile, but still there. I have checked the interior filter behind the glove box and although it's not that clean it doesn't smell bad, any ideas? heater core leak? Fluid in radiator overflow is mid range between hi/low.
#5 of 53
Re: Sienna Vent Smells [jimlee] by ateixeira
Jun 21, 2007 (6:01 am)
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Replying to: jimlee (Jun 21, 2007 4:14 am)

My Miata has that smell, though it's much older, 1993 model. Someone suggested spraying in Lysol in the cowl intake with the fan on high in the fresh air mode.
 
Haven't tried it yet, though.
#6 of 53
Re: Sienna Vent Smells [ateixeira] by taxesquire
Jun 21, 2007 (12:43 pm)
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Replying to: ateixeira (Jun 21, 2007 6:01 am)

My wife's cars always develop a kind of stale-air smell because she leaves the interior circulation on all the time. From what I understand, the car should almost always bring in outside air initially.
 
I usually let my automatic climate control decide how to do those things and none of my cars have had a similar problem.
#7 of 53
Re: Sienna Vent Smells [taxesquire] by ateixeira
Jun 21, 2007 (12:44 pm)
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Replying to: taxesquire (Jun 21, 2007 12:43 pm)

Yep. Fresh air also lets is breathe when parked, I was told once.
#8 of 53
Re: Sienna Water Leaks [dkp] by spdsk8tr
Sep 21, 2007 (2:18 pm)
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Replying to: dkp (Apr 17, 2007 11:51 am)

I have exactly the same problem on my 2004 Sienna -- water pooling in the front passenger side + MEGA-mold.
 
The hose test works for me. I removed the rug, and can see the water trickling down right behind the wire harness by the door. I can't tell where it is getting in, though (yet).
 
I'll let you know when I have it figured out.
#9 of 53
Re: Sienna Water Leaks [spdsk8tr] by bearlurker
Jan 06, 2008 (6:56 am)
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Replying to: spdsk8tr (Sep 21, 2007 2:18 pm)

I'm having the exact same problem on my 2000 Sienna XLE -- water pooling on the front passenger and driver sides.
 
Anyone have any success in addressing this problem?
#10 of 53
Sienna water leaks resolved!!!!! by carpool6
Feb 28, 2008 (4:25 pm)
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I too have water leaking into the front drivers and passenger side of my 2001 Sienna. Turns out that there is an A/C vent located in the rear quarter panel of the van, that can be cracked if any one backs into your bumper there. We found out the hard way after our neighbor hit our van, the body shop repaired the damage to the body but did not replace and reseal the vent that had been cracked they just glued it back into place
Water has leaked in for the past five months, pooling up to a half of an inch in the front of the vehicle. My carpet and interior are now trashed over a $67.00 vent.
This took hours of research by a competent dealer, no body shop including the one that did the repair would look at this problem. Finally no more leak, I hope to save any one else the expense.

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