Last post on Aug 25, 2013 at 2:23 PM
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Toyota Sienna, Auto Body, Van
#54 of 128 '01 Sienna XLE Leak Sources and Fixes
Dec 17, 2009 (5:46 pm)
I found 2 sources: 1. There is a gutter under the edge of the sunroof that collects the water that makes it around the seal. It is drained by 4 tubes connected to the 4 small holes in the corners. Try carefully pouring water in this gutter on a slight downhill slope to check that the 2 front drains drain under the car and on an up hill slope to check to see it drain out towards the back under the car. The air dam helps collect more water on the roof so that it will run in. My front holes were plugged. The gutter overflowed inside the interior plastic molding of the headliner, down the columns beside the windshield, under the front side trim at the interior front of the doors, then out onto the floor. I removed the air dam and left it off. I cleaned the gutter and the holes, and ran thin stiff oxygen tubing (tygon) down the holes about 5 feet and ran water down the tubing. This reduced but did not eliminate the leak. I tightened the lift gate by moving the metal strike ring attached to the body toward the front and this helped the rear leak some. I removed the carpet, pulled and raked off the backing and washed it in the driveway. I replaced the backing with carpeting in the places it had been and should have used indoor-outdoor to reduce mold when it leaked again. This helped but did not completely stop the leak.
#55 of 128 Re: '01 Sienna XLE Leak Sources and Fixes [beards]
Dec 18, 2009 (5:02 am)
Hey beards thanks,
We don't have a sunroof in our Sienna, but I am definitely going to try moving the strike plate as you suggest. This sounds most promising.
I went into the service manager's office and he asked me to take it in. He keeps telling me that they will not be able to repair this for free as my Sienna is out of warranty. I insisted that it was a problem that had started within my warranty coverage. He reluctantly said for me to take it in and they would "have a look at it and go from there". Not much faith in them at this point that I would have them tear out the inside again, but charge me for the labor, only to tell me that they still can't get my water problem resolved. I have a couple of things I want to try before I let them at it again.
#56 of 128 Re: Mystery leak in Cargo area 04 Sienna [gail17]
Jan 22, 2010 (3:43 pm)
I bought a 04 toyota seinna in december 07. I was having the same problem in the rear cargo area. Every time it rain I would get a pool of water. It looks like fish can swim in there. I would vacuum all the water out, nice and clean. When it rain I would have the same problem again. It happen 3 or 4 times. I'm really piss of now. Finally I took the trim panel in the rear with the three hook out. I remove the carpet, this time time everything was dried. Took it to the car wash and wash the car. I found out that the lower and upper sheet metal sealant was not sealing the two panel together in some area. It was dripping slowly along some area where the sealant was not sealing. Solution, I went to home depot and bought some clear sealant silicone II. reseal all along on top of the cheap manufactured sealant. I have never have pool of water in the rear cargo trunk again.....
#57 of 128 Re: Mystery leak in Cargo area 04 Sienna [supra95tt]
Jan 22, 2010 (4:11 pm)
I have the same problem with my '01 Sienna.
My friend put adhesive (it looks like some kind of glue) around the rubber trim on the rear hatch and the leak is fixed. He didn't replace the trim because the rubber on the trim is fine so it looks like the fitting of the trim may not be very good.
Waiting for the Spring/Summer to come around to dry up my carpet...still a bit damp as the water leaks to the front of the van.
#58 of 128 Cargo area leak
Jan 23, 2010 (9:58 am)
My cargo area still has some leakage. Where are the sheet metal seams you sealed?
#59 of 128 Re: Cargo area leak [beards]
Jan 23, 2010 (5:30 pm)
I had the rubber trim around the opening on the back where the cargo hatch door meets the opening re-sealed. Looks like the water was leaking through the rubber trim.
#60 of 128 Re: Waterleak in the storage area [jmbuddies]
Mar 06, 2010 (1:04 pm)
had same problem with my moms 2006 sienna thought rear seal was leaking also took off seal and applied vasoline to seal reinstalled.re water tested still leaking. thought it was coming from tail light sealed re water tested still leaking.water running along seal and in through bumper bolt grommet removed bolts one on each side. removed both grommets on this particular year the grommets are yellow i dont know if the color varries from year to year. but i removed grommets and removed little black seal gasket dried off grommet really well and its mating surface used goop sealant around grommet and inserted in hole and fingered sealant around grommet.let sit overnite re water tested no leaks. i use goop for all sorts of things this fix cost me $3.50 for the goop. my mom is really happy no soggy carpets.
#61 of 128 Leak: Another problem w/07 AWD Sienna!
Apr 12, 2010 (10:09 am)
I had been dealing with the crazy "no traction in inclement weather - particularly light SNOW" with the AWD run flat tire issue. I finaly resolved that thanks to the tire forum where Run flat peeps were getting run flat SNOWS so that they didn't lose a passenger seat to the Toyota spare fix issue...... when low an behold...Now this metal pot LEAKS! I carry electronic equipment as a performer and travel the region. I can't have a leak in the CARGO area - my amps/PA etc are $$$$ and dear to me. I had a Toyota Camry that was 22 years old an still running when I donated it to CARS for KIDs and I had no real problems. I had a Dodge AWD Grand Caravan that lasted 10 years and then croaked. I of course, decided to go all TOYOTA. What a drop in quality! So, the van is in the shop with rust marks in the carpet in the cargo area from the seats mechanism. I am not enthused to see all the problems listed here. I'm under warranty until August. We'll see!
#62 of 128 Same Tailgate seal problem
Jun 22, 2010 (8:06 am)
We had the same problem – water seeping and pooling into the front seat driver and passenger foot wells and soaking the carpets. The final solution was the same – replace the tailgate seal. The car is “raked” forward for style, and water was being channeled down the rear floor corrugations to the front seat foot wells. To verify the problem, you can stick your hand down under the front carpet and padding via the open flap below the glove compartment and also behind the brake pedal. If you remove the rear seats, there are small cutouts around the seat brackets where you can also stick your hand under the padding. If both are damp it has to be from the seal problem.
You have to replace the seal and remove the carpet to dry it. The carpet has a waterproof base, which will prevent the inch of padding under the carpet to dry without removing it. If the padding remains wet it will create a horrible mold problem. You can remove and dry the carpet yourself, but allow an hour or two to remove the carpet, and an hour to reinstall it.
To remove the carpet: Remove the backseats, pull the little screw covers off the back seat bracket covers and remove the screws under them, remove the front seats by removing the 4 big screws holding each of them down (carefully unplug the passenger seatbelt sensor beneath the front passenger seat first), pull the plastic driver foot rest plate, and pull the carpet out from under all the plastic scuff plates and trim plates.
Hang the carpet up in your garage. I draped mine over a horizontal beam with the padding side facing out and set a big fan up under it. It took a day to stop dripping, and 3 more days to dry out the 1 inch thick padding. I then sprayed it with Lysol, Oust, and mold order remover.
We were able to work the carpet back under the plastic scuff and trim plates without removing them, but there are still a few minor wrinkles in it.
Note – I had originally tried drying the carpet while it was in the car by propping up some of the wet areas and sticking hair dryers under it for 2 days. I gave up and removed it.
The official Toyota response was the same: “so sorry – we know of no common problems - please take it to your dealer for repair”.
One of the other responders suggested removing the carpet and just driving with the floor mats. This was an excellent suggestion. If the padding is wet and you have to wait for a repair appointment or seal delivery, then remove the carpet and start drying it now.
#63 of 128 leaking seinna 06
Jul 31, 2010 (6:30 pm)
I have a leak causing passanger floor to be soaked. My mech checked a/c drain and said it was OK . Can't figure out where the water is coming from. Afraid to take it to dealer could cost a fortune at 90 / hr labor. Looking for help. Only on passanger side.