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2010 Honda Odyssey leak in trunk area #5137750 06/18/19 05:01 PM
Joined: Mar 2004
Posts: 23,133
Donald Online Content OP
OP Online Content
Joined: Mar 2004
Posts: 23,133
My daughter has this vehicle and stuff in the back trunk area is getting wet. I said probably gasket around hatchback lid, but maybe it has a second evaporator in the back and condensate drain is plugged? I know a Suburban of mine had a second evaporator to cool the back area.

2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: 2010 Honda Odyssey leak in trunk area [Re: Donald] #5137771 06/18/19 05:36 PM
Joined: Apr 2013
Posts: 6,375
gregk24 Offline
Joined: Apr 2013
Posts: 6,375
I would think it would be the 3rd brake light cover.

2012 Honda Accord EX-L K24z3
59,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
51,xxx miles
Castrol Edge 0w40 / OEM filter
Re: 2010 Honda Odyssey leak in trunk area [Re: Donald] #5137775 06/18/19 05:38 PM
Joined: Sep 2005
Posts: 6,779
Warstud Offline
Joined: Sep 2005
Posts: 6,779
Have someone get in the trunk with a flashlight and look for leaks while someone else sprays down the trunk area with water.

Re: 2010 Honda Odyssey leak in trunk area [Re: Donald] #5137859 06/18/19 07:11 PM
Joined: Jul 2008
Posts: 374
zfasts03 Offline
Joined: Jul 2008
Posts: 374
`05-`10 (3rd gen.) are known for this. Just fixed my `06 Odyssey EXL a month ago. Check hatch weatherstrip, but mine was the roof seam at the rear, both sides.

Mine was leaking at the cracked roof seam seal at the top of the rear hatch jam. Mine is definitely fixed. I dried out the rear cargo area, and since we have had crazy rainfall and the cargo area has remained dry.

Most of the cracking was visible with the rear hatch open at the very top besides the hinges on both sides. The crack is super small , but cracked/separated in a way that aided the water to run in.

I did remove the roof rack and the black trim pieces to check and seal under there also. But almost all of the cracking was the last ~4-8 inches of the seam. And most/probably all can be sealed without removing the roof rack.

If you need to. Roof rack comes off easily. End caps slide off after pressing release through hole. Then some torx screws and nuts if I remember right. Took longer to clean out the channel than take the roof rack off.

I used GM seam sealer (not easy to work with) after digging out the cracked dried up sealer with a screwdriver and pick. Have paint thinner available for clean up of excess seam sealer.

Make certain area is 100% clean and dry so seam sealer adheres.

Maybe look for a smaller more manageable tube of seam sealer. Only a small tube is needed.

Following day, touched up with Honda OEM touchup paint. Tricky area to get into. Paint won't match because the jams are just base coated with no clear, but at least looks better. Mine is Slate Green Metallic.

Last edited by zfasts03; 06/18/19 07:35 PM.

- 03 Corvette Z06
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