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My floorboards, both on the drivers side and the passengers side have been wet for 6 months now. First thought it was my heater core but mechanics say no. they think it is the wind shield. Took it to a windshield place and they could find nothing. Could it be coming from around my side doors? Maybe coming up from the floorboard? Thanks for any help. You guys are very good at solving problems.
 

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I had a similar problem with my 2003. In my case it turned out to be a clogged drain path down through the body from the area of the windshield. You need to remove the cover from under the windshield in the engine compartment to access the area in question. When you get the cowling off you will see a trough that extends from one side of the compartment to the other and at the side of the car there are several paths for the water to take down through the interior of the fender to drains at the back of the wheel well. If you pull the carpet back then put a bit of water down the drains you should be able to figure out which one is clogged. In my case it was a narrow drain right at the bottom corner of the windshield that I ended up plugging with silicon sealant. I'm assuming that the drain path clogged with debris causing water to back up far enough to allow it to enter through one of the bolt holes or wire ways through that part of the car.
 

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Someone in some other thread mentioned to check the drain port at the bottom of the front mud flaps.
 

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Hey guys, after heavy rains in my wife’s 2018 Pilot I noticed wet drivers side floor board as well as second row. I’m going to contact the dealer tomorrow but at 24,000 miles I may be out of luck. Hopefully they work with me because I want it fixed obviously and maybe new carpets because of mold issues. This is crazy if they didn’t seal this car properly and she had been smelling a funky smell periodically for a while, but though a dead animal may have crawled up into it in the driveway. Damn I may want a new Pilot under the lemon law in CA if the dealer can’t fix this and from reading these forums it sounds like most of the time they don’t fix it.
 

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Hey guys, after heavy rains in my wife’s 2018 Pilot I noticed wet drivers side floor board as well as second row. I’m going to contact the dealer tomorrow but at 24,000 miles I may be out of luck. Hopefully they work with me because I want it fixed obviously and maybe new carpets because of mold issues. This is crazy if they didn’t seal this car properly and she had been smelling a funky smell periodically for a while, but though a dead animal may have crawled up into it in the driveway. Damn I may want a new Pilot under the lemon law in CA if the dealer can’t fix this and from reading these forums it sounds like most of the time they don’t fix it.
It's kinda nuts it's happened so early in its 2018 life, but have you tried unclogging the AC drains as explained in post #3?

2005 Pilot Wet Floorboards

On the other hand, if it's still under warranty, let the dealer handle it and pay for it, if that's possible. Just watch them while they work on it in case it happens again out of warranty so you know what to do.
 

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. . . but though a dead animal may have crawled up into it in the driveway.
This gave me my morning laugh. I didn’t think this would be possible.?

Welcome to the forum. Your Pilot is definitely below the 36k mile bumper-to-bumper warranty expiration, so it’s a matter if it’s also below 3 full years in service. Chances are that it is since the 2018 models would have arrived at dealerships in fall 2017 at the earliest. I would take the Pilot to the dealer and have them figure it out since it’s likely a warranty issue. If they tell you it’s not covered, then try what plplplpl mentioned.
 
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