Need Help: Passenger front floorboard water leak

[Clayton]

Hi all, looking for some help from someone who may have had a similar issue. Every time it rains I am getting water accumulation on the front passenger floorboard both on and under the floor mat. I put down some plastic and can tell its coming from dash/ floorboard area, NOT the door or the A/C. Anybody had a similar issue? I've checked several times myself and dealer has had the vehicle 4 times already and can not find an issue. I park on a slight elevation with the front end higher than the rear. Any thoughts or similar experiences/ fixes would be greatly appreciated.

Vehicle is 2020 Expedition

 

[99WhiteC5Coupe]

Hi all, looking for some help from someone who may have had a similar issue. Every time it rains I am getting water accumulation on the front passenger floorboard both on and under the floor mat. I put down some plastic and can tell its coming from dash/ floorboard area, NOT the door or the A/C. Anybody had a similar issue? I've checked several times myself and dealer has had the vehicle 4 times already and can not find an issue. I park on a slight elevation with the front end higher than the rear. Any thoughts or similar experiences/ fixes would be greatly appreciated.

Vehicle is 2020 Expedition

https://static.nhtsa.gov/odi/tsbs/2019/MC-10168762-0001.pdf

 

[JUST4FUN]

Sunroof drains clogged

 

[wakeboarder]

Hi all, looking for some help from someone who may have had a similar issue. Every time it rains I am getting water accumulation on the front passenger floorboard both on and under the floor mat. I put down some plastic and can tell its coming from dash/ floorboard area, NOT the door or the A/C. Anybody had a similar issue? I've checked several times myself and dealer has had the vehicle 4 times already and can not find an issue. I park on a slight elevation with the front end higher than the rear. Any thoughts or similar experiences/ fixes would be greatly appreciated.

Vehicle is 2020 Expedition

I believe somebody else had a similar issue and it turned out that Ford left some plugs out. I think the discussion was about a year ago.

 

[Skmcclain]

I'm dealing with the same thing right now. So I'll be following to see what your outcome is. I have smart liners in and when I took mine out to clean the other day I noticed it was wet. I cleaned my carpets and let dry. When I checked again today it had the same condensation on the bottom side of my mat. I'm gonna take it to dealership and show them.

 

[Alwaysthinkin]

I'm dealing with the same thing right now. So I'll be following to see what your outcome is. I have smart liners in and when I took mine out to clean the other day I noticed it was wet. I cleaned my carpets and let dry. When I checked again today it had the same condensation on the bottom side of my mat. I'm gonna take it to dealership and show them.

Be sure to print out the TSB in post ( @99WhiteC5Coupe ) #2 and take with you.

 

[Yupster Dog]

Ford left some plugs out.

I remember that as well I have searched some and can't find it. Anyone else remember the missing plugs post?

 

[99WhiteC5Coupe]

I remember that as well I have searched some and can't find it. Anyone else remember the missing plugs post?

I recall the post (and it had pictures). Can’t find it....

 

[DWs-TTEB]

Check these threads out, has pics & such:

2020 expedition water leaks

I have been working on alot of ford water leaks lately just wanted to post this so others can be informed. as some of us know there is a problem with the ac system leaking into the vehicle on 2018-20 Ford f150s and a few other models I just found a new one on a brand new 2020 expedition I...

www.expeditionforum.com

Interior water leak?

Anyone else developing water in the front passenger floor of their 4th Gen? Backstory I didn't notice the wet floor during the test drive, but on the way home my son said the floor was really wet. I brought it back to the dealership and they insisted it would be mitigated. They applied the...

www.expeditionforum.com

 

[Yupster Dog]

Check these threads out, has pics & such:

That's it! 2020 expedition water leaks.
Thanks DW and Happy Birthday!!!

 

[DWs-TTEB]

That's it! 2020 expedition water leaks.
Thanks DW and Happy Birthday!!!

Thanks @Yupster Dog

 

[jandrews]

https://static.nhtsa.gov/odi/tsbs/2019/MC-10168762-0001.pdf

I have been battling this same issue with a 2019 expedition. Passenger floorboards wet when it rains. First trip to the shop they said it was a faulty AC condenser line and they replaced it. I’m still having the issue so I took it back to the original dealership I bought it from. They said they couldn’t duplicate the leak but believed the AC condenser line to be installed incorrectly and “fixed it”. I feel like this is another shot it the dark because they have no idea where it’s coming from and I’ll continue to have the issue. Following in hopes I can bring ideas to them. My floor gets moldy under my weather tech mats and I constantly have window fog due to the internal moisture.

 

[5280tunage]

I would double check the plugs. Seems a little more rampant than it should be. I believe I even saw similar issues on an F150 forum. I think you have to pull the fender liner out to see in there adequately.

 

[Chromo]

I had issues with water on the passenger floorboard and it was not from rain but a bad "T" connection in the windshield washer line on the firewall.