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I found a swimming pool in my trunk when I was pulling out the spare tire. I was thoroughly impressed and I can not wait to go to Hyundai to thank them.

I never went searching but after finding this thread, I feel better that I'm not alone.
 

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I'm new to this forum but I figured I can help since I refuse to take it to the dealership who charges a ton to fix nothing.

Trunk and passenger foot well leak -
I found many and probably wont find them if your not looking. The tail light gasket is the easy one but will cost the most since you will replace tail light. Hyundai keeps those in stock. The issue to due to a Vein pass in gasket that allow water to pass thru as a stream or at least on mine. Had to really look for that reason.

Also once you gut the trunk, you will find 1 seam in each fender well. I just use silicone caulking on those (Top to bottom).

Last is the hard one is the trunk itself. It leaks but the cloth cover in front does a great job of absorbing it. It's either bad trunk seal, bad spoiler gasket or bad seal on spoiler light gasket. IF you don't have a spoiler, LUCKY! SO far I've swapped out spoiler gasket. About $30 each, and sad when you see what you spent your money on. Cheap and I wish I had made my own.

The passage foot well was a pain. Lots of trial and error just to figure out that the Hyundai mechanic with photos on page 6 was right. Problem is, no real explanation.
I can explain it simple. Remove cowl and fender & buy silicone caulking. Don't remove deflector plate in front of fresh air intake vent cause you will break your windshield. Socket and wrenches are no help. Instead, get 2 flat head screwdrivers. Put the silicone on the end and smear it on these seam and opening behind seam to make a silicone wall of some sort. Head at fender and hand at cowl. You got to see what your doing. It seems like their are 3 vent to the a/c for fresh air but only 1 leaks


Sorry for the rant but I love this car but hate the BULL!

Hyundai ended up replacing my entire front windshield and weatherstripping after I took the car in 2x for passenger foot well leaks in 2 months. It seems to have solved the problem but now my sunglass holder rattles.......
 

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I heard it was the tail lights? hmm.. idk.. I just know it is coming from the left side
Mine had water in the trunk. I used Black Thermoplastic Caulking above both my tail lights and 2 little spots at the top left and right corners of where the trunk sits when closed. You can hardly tell I put it there and my trunk has been dry ever since.
 

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I just found a leak like Obyone's. Right behind the drivers seat. Unfortunately it's between 10-20 degrees outside and the pool behind my seat is frozen over. I'll be taking her into the dealership this week and I'll post what they say. According to you guys it should be the welds. Lets see what the come up with.

5 minutes later:
Just checked the trunk and found an inch of ice under the spare.
Did any one get this repaired under warranty?
Update:

After 2 years, the leak has not returned. And yes, this was completely covered under warranty.
 

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No more water leaks

Update: It rained it's ass off here in HOUSTON, TX and happy to say car is no longer leaking.

Parts Replaced:
Tail light gasket L/R : $40
Spoiler Gaskets L/R : $60 (Make your own. It's very sad to see what you paid for)
Trunk Weather stripping: $80 (didn't have too but I ran the paper test to check for a good seal and it failed)
&
Silicone to fix foot well leak: $7

I will recommend hyundaipartszone is pretty good overall on price but I recommend calling dealer after you check online for prices and shipping. The dealer can sometimes throw out a good price without the shipping cost.
 

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I took mine in after finding a 1/2" of water behind the driver's seat. The dealer said I should keep my windows up. I told them wrong answer. That day another GC came in with the same problem but much worse. Then they blue out the drain lines from the sunroof and adjusted the rails. It's been good for about a year and now is leaking again. I'm pretty sure Hyundai is very familiar with this problem, but refuses to issue service bulletins, recalls, etc. I'm getting very upset having to vacuum the water out of my car.
 

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I took mine in after finding a 1/2" of water behind the driver's seat. The dealer said I should keep my windows up. I told them wrong answer. That day another GC came in with the same problem but much worse. Then they blue out the drain lines from the sunroof and adjusted the rails. It's been good for about a year and now is leaking again. I'm pretty sure Hyundai is very familiar with this problem, but refuses to issue service bulletins, recalls, etc. I'm getting very upset having to vacuum the water out of my car.
Check the trunk. If the tail lights are leaking badly enough or depending on how the car is parked, the water could be making its way under the back seat cushion and onto the floor behind the front seats.
 

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At 110k now. I feel like I hear water somewhere on the right side whenever I start the car up. The other week there was a huge rainstorm and my passenger side floor was flooded. Will need to get this looked at soon.
 

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ig @2point0_tj
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sorry, I'm really digging up an old thread here but,
recently I took out my back seats in my 2013 for a wood floor. the day of, i realized that the bottom of the seat was damp. didn't really think anything of it at the time, but after driving around for a few days, i saw a pool forming in the bucket of the seat about an inch deep. in each bucket is a black rubber plug leading outside. needless to say, i unplugged it and the pool no longer forms but there are still puddles.
Heres the kicker: i believe the water drips from behind that black plastic piece behind the back seats (the plastic arch that the seats lock to). The water drips from the bottom of the arch.
Its not very consistent, but when it rains, sometimes ill see water. i washed my car the other day and just hitting it with the hose made puddles in the back.
Braked hard the other day and i heard water flow and saw it drip down into the seat.
Also, I've seen water near my spare. the whole compartment is covered in beads of water. I've heard this may be from the tail light, not positive.

This weekend (weather permitting) i may strip the interior liner of the trunk and try and find the source of the water in the backseat.
 

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This weekend (weather permitting) i may strip the interior liner of the trunk and try and find the source of the water in the backseat.
Sounds like tail light gaskets. The water gets past the tail lights into the trunk and depending on how the car is sitting it can flow forward into the seat area. The gaskets are covered for 5 years 60k miles but they're cheap and easy to replace if you want to do it yourself.
 

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When I first got my Genny I had water in the trunk too. Once I took the tail light assemblies off and used regular household $6 at Walmart weather stripping around the taillights, it never came back. Cheap and easy to fix for that problem.

I haven't had water anywhere else but the trunk. This thread is starting to scare me a little bit! :|
 

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Gasket maker works well also
 

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ig @2point0_tj
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Thanks for the advice!
anyone have any info on potential holes near the wheel wells? If not, again, I'm sure I'll find any this weekend
 

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Your drain tubes for the sunroof...pull out the jack I bet there is water in that tub. Can only be accessed if the jack and plastic is removed
 

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ig @2point0_tj
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Your drain tubes for the sunroof...pull out the jack I bet there is water in that tub. Can only be accessed if the jack and plastic is removed
could you elaborate on this some more? a little confused.
 

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On either side if you remove the trunk cover there are plastic holders one has your jack the other is where the tow hook bag is. Remove the screws and remove it. Look behind and stick your hand in you will feel a cavity where water can sit and not drain out. Your sunroof hose goes here but its sealed to the outside.
 

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ig @2point0_tj
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So this happened the other day, first time ever. Still think it could be that sunroof drain? Still having trouble finding it
 

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I just bought a white Genesis Coupe 3.8 Track about 2 months ago and i love it, but there's one design problem, water leaks in on the passenger side foot well. The first time i noticed this was after we had a pretty good rainstorm and there was about a cup of water on my passenger side floor mat(they're rubber mats so i could see it). And I didn't think much of it but i would keep an eye on it. After our latest storm i could obviously tell water was dripping in. So i immediately took it to the dealership where i bought the car where they could check it out. They ran it through the car wash 3 times and it never leaked, but when they put water hose on the windshield so the water could run down into the area where the fresh air for the a/c is taken in and it leaked. The fresh air intake for the a/c is located at the base of the windshield area. If you open the hood and look at the back of the engine compartment you'll see a rubber seal that seals the rear of the hood and directly behind that seal in the middle of the car are about 20 or 30 little holes, and that is where your fresh air is being taken in. Now the area around this intake does not adequately drain water, which leads to a back up of the water and causes the leaking to occur(the leak only occurs when the car is parked, not moving). People with carpet mats probably dont notice this because the water is a limited amount, but its still water coming into your car. Hyundai said that they had no fix to this problem yet, but it's a factory defect and they need to come up with one soon. Keep your eyes out for water guys!
Thank you for posting this.... I've dealt with water issues with my 3.8 Track since I bought it... first was the defective taillights, allowing water into the trunk that leaked into the back floorboards of my car. My entire driver side tail light was condensating. Needless to say, the dealership wanted to replace them with new stock taillights... my question to them was, "What is to prevent this from happening again?" to which they could not answer. So I fixed them myself, and I haven't had a problem with water since (in the car, or the tail light condensating). All it took was a good seal to prevent that water from coming in.

Then came the condensating driver side headlight... I have already had it replaced twice, and it keeps coming back. My best friend has a 2011 2.0T RSpec, and her driver side headlight had to be replaced because of condensation... They informed her that this was a common problem, and was a manufacturer's defect.

And today, I go outside (it rained heavy earlier), and there is standing water on the passenger floorboard on the mat... obviously where water has leaked in.

I feel like my car wants to be a boat for as much water that has leaked into it. It's nice to know what the cause of this is though, so thank you!

But, all of these issues have really made question.... Anyone want a 2011 black 3.8 Track? I'll sell it to you!
 
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