Grantola

Hey @NickWB! Welcome to the home of wet Yetis! Take a look here for the PDF by the very helpful OP: https://www.briskoda.net/forums/applications/core/interface/file/attachment.php?id=112564 I’m still dry after applying the rubber seal above, clearing the drain holes and deleting the wind deflector. No doubt it will be raining inside again tomorrow, but for now I seem to be dry. Let us know how you get on! @Weti’s suggestion above is well worth a try! Cheers, Grantola

@Weti, thanks for confirming and for the further thoughts. I think I may have found another smoking gun this evening. Firstly, scrub what I said earlier. Car sat outside in a different location during the day today and it's soaking as bad as before once again. The only difference between the two locations is a slight camber OS to NS in the location where the ingress happened. Which got me thinking - if it's really the wind deflector transferring to the inboard location we've been talking about, it should leak LESS as the water would have to run uphill. Again, the potential leak area we've been discussing was clearly wet and tracking rearwards along the inner air seal, it was obvious that the water was tracking down to the location from somewhere to the rear. Tracking back, I realised that the water tracked right back to the centre of the sunroof - the underside of the inner air seal was wet right the way along. On inspection, there's a centre sealing joint between the front and rear glass panels of the sunroof with a drainage channel located under the seal. The channel then runs transversely roughly between the B-pillars and terminates in two holes which drain the water which drops between the two glass panels down into the aluminium end channels, obviously leading the water to the front and rear drainage hoses. The NS Torx screw which retains the rear glass panel was obviously wet (the OS screw was dry) and I realised that the NS drain hole was blocked, the water from this channel had obviously been backing up and running over the screw. I stuck a bottle brush into the hole whereby residue plopped out into the drain channel. On further inspection, the hole was mostly occluded at the bottom from excess rubber from the manufacturing process and hence I guess much more liable to blocking. I inspected the OS and the hole was completely clear. Interesting. I used a syringe to drop water onto the screw with the car on the level and I watched the water run from there, along the channel (the outside of the inner air seal) and guess where it went? Straight down the gap that you've been suggesting @Weti. That's potentially our ingress route. Other side was dry. Correlation? I rammed the bottle brush into the hole to try to dislodge the excess rubber in the drain hole, only succeeded to open it up, but the rubber remains. Soggy Yeti owners, I invite you to check your centre drainage holes for blockages! I'll post some images up in the next post. Cheers, Grant

@Weti thanks for the follow up and further thoughts. It's a hypothesis only at this stage, but I think the wind deflector could somehow be channeling the water across the drainage channels where it's supposed to go and dropping it onto the structure we've both highlighted as open to the interior. The leak that I have certainly appears to have wetted the interior right under that structure (can't conclude anything concrete from that though, it could easily be tracking from any of the holes you've identified as suspect). Evidence to muse upon. The surprise I got this morning was that after last night's heavy rain, I came out to a bone dry interior for the first time in months. I applied the paper towel in the dash and all over the floor as suggested by another creative poster. Dry, not one drop. Far too soon to say that we have a potential resolution, but the data point is that I made two changes last night and the outcome is marked. The two changes I made which seem to be the difference between a catastrophic leak and a dry interior were: 1. I fitted the inner tube rubber seal as you suggested at the front (again, nice thinking) 2. I removed the wind deflector/fly screen That's it. I really should have made the changes independently to pinpoint the effect of each, but I can offer that applying both together has resulted in no leak. It could be that we're seeing multiple leaks with different quantities of water. It could be that the wind deflector is a red herring. I'll report back with further updates. My interior is wet, so I'm going to leave this in place until I'm dry. Meantime, if anyone else fancies testing the hypothesis of the wind deflector being a contributor to the woes, that would be fab. Cheers soggy Yeti owners! 🍻 Grant

I've been following this thread for a while now and have tried many of the creative and appreciated fixes suggested by soggy-Yeti owners to date. To me, there's always been something fundamentally wrong that we've not identified as owners yet. My car has got progressively worse over time and the volume of water that's coming in to me implies a direct path, I suspect not (or in addition to) a capillary path. @Wetiwhen I read your post it made a lot of sense to me and hence I popped out this evening and fashioned the seals out of inner tube that you suggested, installed in mine. The design of the OEM seals really is crap as the whole thing depends on the drip pointing down the way otherwise the water is going to potentially run from the seal into that gap. The seals on mine have varible angles and I could see your hypothesis holding water (excuse the pun). Kudos for spotting it and providing this suggestion of a fix. I'll be delighted to test it. I couldn't see how you'd got this concept to work with the sliding roof mechanism, so I simply ran the seal as far as I could around the front before it would start interfering with the roof mechanism. My leak is NSF. While I was in there poking the inner tube in with a cake knife (the extant seal does seal nicely to it - nice thinking!), I spotted something. Has anyone considered the possibility of the wind deflector forming a structure to channel water from the area where it should drip into the tray to the inner part of the assembly? I saw that the inner plastic at the corner of the assembly was wet (highlighted in the image). The only way I could see water getting there was via the wind deflector. So I clipped out the wind deflector/fly screen (dead easy with flat blade screwdriver) and will try this in conjunction with the fix that @Weti has suggested. It's been kept in the garage for the past couple of months, it is out in the Scottish rain tonight.