2009 - 2014 F-150

Water leaking into my cab!

  #46  
Old 12-31-2015, 10:00 PM
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Originally Posted by RedWoodsMan1
I didn't like the idea of gluing the OEM one with factory bulbs to my paint so I used Frost King brand rubber foam weather seal 3/4"x7/16" (Got on Amazon but HD has it) to replace my factory one per what I saw on another site. Tons of rain this winter in CA NW so I replaced mine as insurance against a potential problem couple months ago with my truck closing in on 3yrs old for "winterization". I have never had a leak.

I also dabbed clear rtv silicon with a cue tip into those rivet holes above rear glass and in the seam segment in adjacent track that looked like a "dimpole".

You are correct though in that you will never need to pull the light again especially if you switch to LEDs so silicon is an option as well for 3BL repair.

Haven't touched Sat Ant but moonroof seems to direct flow away from it....but maybe I'll do it to.

Oh, happy near year
To clear things up, if you let it "set" you won't be epoxying it to the truck. I learned the hard way the first time. Applied silicone and installed right away. When I went to open the TBL next time, it was stuck to the paint and I ended up cracking open the housing.

Ordered a new housing, completely removed the foam gasket it came with, applied a thick bead of clear silicone and let it set for 24 hours before reinstalling. I replaced all bulbs with LEDs, so I haven't tried to open it. But I doubt it's epoxied to the truck like before. I also put a dab on top of both of the screws to seal that area.
 

Last edited by 2008_XL; 01-01-2016 at 12:54 PM.
  #47  
Old 01-01-2016, 01:46 PM
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Originally Posted by 2008_XL
.......I also put a dab on top of both of the screws to seal that area.
Forgot to mention that, I also put a dab in the screw holes when reinstalling too. Can be another source of entry.
 
  #48  
Old 01-01-2016, 05:12 PM
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Its sad that with 40-50K $ trucks in 2015-16 we have to worry about foolish leaks. I've seen the same complaint in the Ram forums from the 3rd brake light. Crazy in this day & age.
 
  #49  
Old 01-01-2016, 05:27 PM
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Originally Posted by risupercrewman
Its sad that with 40-50K $ trucks in 2015-16 we have to worry about foolish leaks. I've seen the same complaint in the Ram forums from the 3rd brake light. Crazy in this day & age.
You'd think they would have figured that out by now, huh? Could be worse. My girlfriend has an 08 Subaru Legacy. Those all need need head gaskets around 100k. They're bad from 1992 all the way till 2012. That's just pathetic.
 
  #50  
Old 01-01-2016, 10:19 PM
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Originally Posted by 2008_XL
You'd think they would have figured that out by now, huh? Could be worse. My girlfriend has an 08 Subaru Legacy. Those all need need head gaskets around 100k. They're bad from 1992 all the way till 2012. That's just pathetic.
I known a couple folks who have had subaru's including my sister and they all blew them between 100-150 k. $1200-1500 to fix....which seems cheap compared to fixing say a 5.0 out of warranty! Every Manu has its issues though.
Agreed on the leak issues I read....yet same basic light design and gasket for 10 years plus with no real revisions.
 
  #51  
Old 01-20-2016, 08:49 PM
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Originally Posted by 2008_XL
The leaking third brake lights go all the way back to 2004. Just remove the foam gasket and apply a bead of silicone and let it set before reinstalling. Replace the three bulbs in there with LEDs while you're at it. It'll fix the leak and you'll never have to open it again.

I know some are under warranty, but it's very easy and you can do a better job than the dealers will do.
Thats funny because both my 1997 and 2001 have leaked. Thought it was sliding glass but I just siliconed the hell out of my 3rd brake light.
 
  #52  
Old 01-20-2016, 08:50 PM
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Originally Posted by FloridaFordF150
Thats funny because both my 1997 and 2001 have leaked. Thought it was sliding glass but I just siliconed the hell out of my 3rd brake light.
Well, guess it goes back to at least 97! You'd think they would have solved that by now. I guess we will wait and hear about the 2015+.
 
  #53  
Old 01-25-2016, 10:42 PM
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Originally Posted by 2008_XL
Well, guess it goes back to at least 97! You'd think they would have solved that by now. I guess we will wait and hear about the 2015+.
I had a rental 2015 F150 XLT last summer and the 3BL design looked better from the outside but, who knows what gasket material is being used. Time will tell.

130% of normal rainfall here and heavy too in storms.....my homemade gasket going strong!
 
  #54  
Old 04-18-2017, 10:08 PM
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My 2010 supercab started leaking at the third brake light about a month ago. I'm going to dry it out and see what I can do to seal it.
 
  #55  
Old 04-24-2017, 05:54 PM
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New housing

Originally Posted by wjfawb0
My 2010 supercab started leaking at the third brake light about a month ago. I'm going to dry it out and see what I can do to seal it.
My 2010 started doing the same thing. Problem was the housing and seal is all one piece and over time it had warped. No way to seal it. My mechanic said the best solution was to just buy a whole new assembly and put on rather then try to seal the old one.
 


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