I'm glad Honda doesn't make convertibles (anymore)!
I don't think it is a strength issue. If you look at the body-in-white diagrams and pictures released when the truck was new:These rear cab leak threads are troubling. Just speculating here. Maybe it's more than a manufacturing issue? Isn't that a vulnerable part of the unit body design that they had to beef up when they changed the bulkhead (fortress) around from the G1?. Is it a flex issue? Remember that gentleman that had the body creak so he dumped his RL for a Ram. I wonder if that one had a noticeable leak. It's kind of strange that water doesn't easily dissipate of a vertical surface like the back of a cab. Window seals and grommets I can understand but body seams they miss so many? I think there's more to the story and if Honda ever gets around to it maybe they'll do the good old countermeasures until a redesign. Other than the shared issues between the Pilot and RL (injectors, frozen fuel fillers) the remaining pattern issues stemmed from design elements and parts mutually exclusive to the Ridgeline like the tailgate harness and the harness that had a splice outside the cab on early 2017's. Hopefully, the problem is not as widespread as these forum posts suggest. Honda should investigate this.
Ok pulled them out being careful not to bend the panel pins. Saw the two grommets that seemed to be tight and dry. Also found the subwoofer speaker right behind the first small panel on the passenger side just above the rear floor. Hope this does not enter into the water problem equation!!
Nah...the sub box is above the carpet and seems pretty protected. It connects to the back wall with 4 bolts and does not introduce any holes for water.Also found the subwoofer speaker right behind the first small panel on the passenger side just above the rear floor. Hope this does not enter into the water problem equation!!
I was going to wait to post the following photo until I got a direct visual look. Maybe appropriate if looking for a passenger side leak near that's rear speaker. This was taken on the passenger side looking upwards toward the front of the truck, fuel tank is to the left. I had a lousy blind photo angle, need to get the truck elevated and crawl underneath for a better perspective. Likely the speaker is on the other side of the sheet metal. Notice the 3 exposed body holes in the yellow circles. Maybe the body plug guy had the day off? That's also water dripping from them from my water in the bed test.Damp but not totally bone dry. Some light moisture on the floor. Not yet sure where it is coming from. The carpet padding is damp but not soaked.
How long until you just cave in and pull the bed out? And thanks SOOOOO much for doing this work. We have to get traction on this issue up the Honda chain somehow...I'm going to let my truck dry out while trying to figure out how to gain access to that seam without dropping the fuel tank. Thinking maybe working through the fuel pump access panel, but that's working blind and not much room to work.
A huge part of the problem actually getting this fixed is hyper-focusing on the most visible body seam that has all that sealant. Why??? most likely because some over-educated engineer already said to goop it up while on the assembly line, followed by a dealer service tech chasing down an owners complaint that looks at the seam covered in goop and applies more goop. They are totally distracted and missing the problem. And why the heck didn't they seal that forward seam at the factory? It makes absolutely no sense, almost to the point of product liability type nonsense.How long until you just cave in and pull the bed out? And thanks SOOOOO much for doing this work. We have to get traction on this issue up the Honda chain somehow...
i've been told by my dealer that this seam can be accessed by moving the rear wheel well linersCurrently have my rear seat removed and the carpet folded back to expose the bare floor across that entire seat frame riser. Then water tested only the unsealed forward seam with the hose pointed only at the seam. Bingo, it leaks. Then repeated the hose in the bed and let gravity work to drain out the forward drains. Holy cow what a flood inside. This time on both sides of the cab, entering the cab entirely from the drain slots along the bottom of the seat frame riser, and it was all I could do to catch the water with a bath towel at the rate it was infiltrating. I'm also gaining a sense that Honda knows all about this leakage because they placed a foam blocker seal about 3" inside the ends of that seat riser. That blocker diverts any water into the carpet foam and keeps it from flowing out the ends of the riser toward the door sills.
I'm going to let my truck dry out while trying to figure out how to gain access to that seam without dropping the fuel tank. Thinking maybe working through the fuel pump access panel, but that's working blind and not much room to work.
After getting this deep into the problem, I'm convinced there are 2 types of Ridgelines... The ones that are known to leak, and the ones where it hasn't been noticed yet. This is a shame.
Not the unsealed seam that's leaking on mine. My fender liner is already out, it's much further forward. Your dealer is talking about the seam at the top of the photo. Look way in the back of the photo inside the yellow box. That's forward of the fuel tank.i've been told by my dealer that this seam can be accessed by moving the rear wheel well liners
I think my investigation syncs with yours on the source of the leak. It appears my moisture is more from the area ahead of the tank you discuss above (aka in the forward portion of the yellow box in your pic). I'm trying to provide as much guidance as possible to the techs for my June 2 dealer visit (still under warranty).