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Discussion Starter #1
I just picked up a new to me 2017 Hybrid Ioniq for my 16 year old. Love the little car, but in heavy rain the deck lid is leaking water into the spare tire compartment. For the life of me I can't figure out where its coming from. I had it in at the dealer since its CPO but of course they couldn't re-create it. I took apart the plastic on the lower end of the trunk and the water seems to be pooling into the metal seam that holds the weather stripping in place. I have to imagine this is coming from either a misaligned deck lid, or maybe one of the inner tail lights? Ive had most of it apart and can't seem to find the source.

I did some searching on the forums and found lots of stuff for Elantras but not for the Ioniq. Wondering if someone else may have had this problem and solved it.

Thanks!
 

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Sometimes roofs leak. The water can come down interior trim and be completely non-obvious. There are specialists that can track such leaks and fix them. Your repair shop will know how to find them - usually independents and will come to the repair shop to fix. Had this happen to a two year old car in 2003 - perhaps you can bypass repair shops with a Google. Year warranty on the fix, but lasted 18 years until I sold the car.
 

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Sometimes roofs leak. The water can come down interior trim and be completely non-obvious. There are specialists that can track such leaks and fix them. Your repair shop will know how to find them - usually independents and will come to the repair shop to fix. Had this happen to a two year old car in 2003 - perhaps you can bypass repair shops with a Google. Year warranty on the fix, but lasted 18 years until I sold the car.
It seems pretty localized to the hatch area. Given that there is the big rain channel there that runs down each side im assuming something there is leaking. Maybe im best to go back to the dealer and let them try again. Thanks for the reply.
 

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The hatchback is aluminium rather than steel. Brutal mishandling could have distorted it
 

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My favorite way of tracking hard to find leaks is to use paper towels as a leak source detector. It may require removing interior lining until problem is found. I just stuff a piece of paper towel into any area that looks like a source/drain path for the leaking water. After a rain/water event check on the paper towels. Dry indicates no leaks, wet indicates on the right track. Often it takes some time as water leaks can be tricky; as often what looks to us as uphill, actually looks to the water as down hill.
 

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check the hatch lid catch is adjusted properly,

also have a look at the rear light clusters, if someone has taken them out to change a bulb they may not of put them back right leading to a poor seal

to get an idea of where the water is coming in, try putting white masking tape round the inside of the trunk/ boot lid seal and anywhere you think may be linked, then draw a line with NON waterproof marker pen, and then rinse the car with a hose for 5-10 minutes, let it drain off and open the boot / trunk and see if you have any marks on the pen lin where water has run over it
 

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Discussion Starter #7
Alright, if anyone is following along I figured I would post this here for future people if they were curious.

I spent the morning chasing this leak and finally found the culprit. First I thought it was both inner tail lights since I could see some dripping coming from the tops of them. (I removed all of the plastic panels to get down to bare metal). So, I took them both out and applied clear silicone sealant around each and re-installed them. At this point, I had removed all of the paneling and could see that water was actually coming in much higher. I noted it appears to be coming in from under the spoiler and riding the tail light connector (the middle tail light) then dripping into that panel and pretty much going everywhere.

So, I removed the spoiler and found that the pass through from where the tail light passed through the body panel and connects seemed to be our leak. So, I clear silicone sealed all of the screw entry points and the entry point for the tail light and so far at, least I'm dry as a bone. I don't know if all Ioniqs have this spoiler, but it's a pretty poorly designed part. Mine is a 2017 Ioniq Limited with pretty much all the options.

Hope this helps someone in the future if they have the same issue.

Thanks everyone for your responses.
 
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