It is not always easy to find a leak and takes a lot of patience to do so. I would recommend puling the rear carpet, place several sheets of disposable paper towels in the bottom of the cargo well, to be able to see if water is coming in as you can see the towel getting wet, but just water in naked is not easy see, than close the hatchback. Using a garden hose and starting around either side left or right rear end corner, and work-up that corner while looking inside to see if any water is leaking in, be patient as it will probably be a small leak and hard to chase down. Starting Continue up the corner (including around the tail light). Once you reach the top corner, go around the hatchback door seal again starting on the bottom and left side until all away to the top left side. Work around the tailgate trim (plastic H, license plate, rear push button release, camera area). Next move over to the right corner bottom and work up just like the left side rear. Next move to the right side of the tailgate and do the same. Now move to the top of the tailgate and go around it seal. Last is to water around the top of the GPS/Radio antennae.
The only areas remaining is if their is a plastic plug missing in the cargo well or possibly if the tailgate vents are blocked up on the bottom of the tailgate and cannot drain out any water that enters the tailgate. The worst area is checking the interconnection sealing material between the rear cargo area (floor level) and the underneath the rear seat area, it seems to me sometime back someone posted a picture of this being a problem on his ODY. You will need to do and advance search on that.
Found lots of water in rear cargo area took to dealership they took out rear seats and all carpet found Black Mold everywhere . They water tested van found many leaks resealed area or I might say goops of sealer, not very neat and not uniform, took taillights out found seals opened up, the...
For those of you with a pond in your new Odyssey, I felt your pain and discounted how minuscule the chance might be that my own EX-L might have water coming in from somewhere due to a quality issue. Then one day about two weeks ago, I decided to do my sound attenuating regimen on my new...
Found water puddle in the trunk. Not sure where it came through. Didn’t drive for a week and it rained light one afternoon. Anyone got any idea?