Start by removing the two screws holding the brake light to the cab.
F150 third brake light leak repair.
Lift the housing away and twist the light sockets out of the brake light housing.
You ll know if this happens because you start to see water accumulating above the rear passenger seat on the headliner.
Dealer told me two years ago it was third brake light.
3m double sided tape razor blade cutting tool rubbing alcohol hand towel water source for water leak testing.
Examine the foam rubber gasket where you saw bubbles and you may see why it was leaking.
This is a very common problem there is even a ford tsb technical service bulletin issued yet unless you have under 36 000 miles ford will not repair and the leak causes damages to roof liner seats and carpet.
Remove the old foam gasket from the third brake light assembly.
Fortunately i caught this problem early and it is a fairly easy fix.
Changed light twice and two years later still not fixed.
2004 2008 ford f150 3rd third brake light lamp high mount updated design new genuine duration.
The 3rd brake light on the back of the cab is leaking water on newer ford trucks knows this and should do a recall to fix all and make repeat customers smile for once.
Brake light was dry when cover was removed i now believe it is the small black trim piece that is riveted to the roof above rear window.
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The fix is simple and will only take about 20 minutes.
Gets headliner all wet.
Sealed light completely and it rained on 11 2 2015 headliner still got wet.
1a auto shows you how to repair install fix change or replace a broken damaged burned out cracked faded cloudy or chipped third brake light.
Wipe down the brake light assembly with rubbing alcohol where the old gasket was removed.
The 2010 ford f 150 has 12 problems reported for 3rd brake light cargo light leaks.
This guide is for a 2009 2014 f 150 but the same concept applies for.