2010 F150 Rear Window Leak solved!!

Hey guys it's FORREAL!!
Had this leaking problem in my ford 5.4l f150 crewcab and thought I might as well make a video to help you guys out there with the same problem. After tearing it all out I found that it was not the window itself but the third brake light that wasn't water tight, letting water into the cab. I took it off and put silicone on the brake light fixture (not on the truck), let it cure till lightly hardened, then put back on the truck. Hasn't leaked ever since. I hope this video helped you guys. You can also share with anyone who might have this problem.

Credits;
Background music - Valesco - Cloud 9
Brother - who helped me film this video.

[joecarreon]

I would recommend a wet vac with a small tip and suck all that water or blow it out with and air tip. Don t let water sit like that. I did this same same job on my 2002 F150. The plastic was cracked on the left side causing the brake light to be loose . I used crazy glue to fix the plastic trim it was the inside side piece that broke. Then I screwed the back plastic part to the cab with a self tapping screw then resealed the area mounted a new smoked 3rd brake light and gasket and it feels solid now and no more leaks.

[jamesharper]

Thanks for posting this but why did you remove all that just to work on this brake light

[txnaf]

Thanks for posting. I had the exact same issue in the exact same place. Common sense would lead you to conclude that the leak was coming from the seam in the back corner of the cab. It was several months before I came across a video that said Ford had cheaped out on the gasket which caused the leak. I used silicone and it has never leaked since.

[warrenself]

For anyone watching and considering this method, I highly encourage you purchase the upgraded Ford lamp or a quality aftermarket lamp. If you use silicone and for whichever reason have to remove the lamp again, you’ll end up destroying in and marring up the mating surface. Previous owner of my truck removed the foam gasket and used a lot of silicone but the lamp wasn’t sealed and cracked which allowed water to still enter. I also just used a screwdriver and not a drill or impact to re-install. I spent hours using disposable plastic scrapers and WD40 to help melt and scrape off all of the silicone, then did a little bit of straightening out of the metal before washing the area with dish soap and water. Just installed an aftermarket LED lamp with the upgraded style gasket this time around. A couple weeks and so far so good. If this one leaks I’ll try to track down the new style Ford lamp that the official TSB outlines.

[MrRussell]

I just clean the light seal periodically and it seems to reseal OK. I don't want to buy a new light etc soII just carry on..Also don't want to reseal with silicone. searching for a third option. I suspect intentional obsolescence on the part of Ford to sell the fixit part. and I don't like rewarding such with more of my money...Good video. Good job taking everything apart etc.

[matthewwert]

Ford upgraded the gasket seal on a new light....no need to remove anything in the the cabin area. All you need is to remove the third brake light, clean sealing surface and install new light. I did the repair in five minutes and another 15 minutes cleaning the rear portion of the headliner with a Ford cleaning shampoo. If using sealant as your video, you will destroy the light when removing in the future. Good video identifying the leak.

[wooddawg]

I replaced my old 3rd brake light before it started leaking with a new LED one. Even with the new 3M gasket it still clear siliconed it all the way around after installation. Stay as a bone. I would also silicone after install like I did.

[deesel]

How do you replace the bulbs, when they fail?

[thehappytexan]

Just did the same thing on my ram 1500. Used 5/16 by 19/32 weather stripping from Home Depot. Works perfect and cost $7.99.

[mattsnavely]

Thanks for the video. No doubt it will fix my issue.

[johnwelsh]

I had the same problem with my 2004 crewcab. Now I need to do it on my 2010. ugh

[michaeldean]

Great job. I am doing this fix in the morning myself.

[nmhsk]

Hoping this is all I need as well! Thanks for the vid!

[mayday]

I have a 2012 f150. I have replaced the third brake light and had the rear window resealed by a glass company. The roof still has a leak in the corner on the passenger side. Does anyone know what it could be?

[ashleyb]

So if I wanted to fix this same issue, theoretically I wouldn't have to take my entire back panel apart, I could just unscrew the third brake light and silicon caulk it and put it back? It's nothing urgent so I wouldn't mind trying to fix it and it not working the first time... I could always go back in if I need to, but I don't want to take everything apart if I don't have to.

[devildog]

Thanks for the video. It did help me out with the same issue...

[Tholo-syoh]

Dude keep the camera still for a minute. I stopped cause I couldn’t see what you

[johnstoyak]

Not to criticize but you don’t use silicone on a vehicle it could cause rust it eats into the paint

[paulvaughn]

Bro you don't have to tear the back out of it use some gutter sealer around that light and that's a permanent fix also clean your door hinges and put that sealant around it bro

[ItsThePrzybysz]

Be aware when doing this fix... I just spent 2 hrs peeling off this garbage because I did this 2 years ago and now the bulb burned out.