Yes. Just did this repair on my 2011 a week ago. The gasket surrounding the third brake light was shot. I removed the upper hatch interior trim panel getting access to the two retaining nuts on the light bar, removed the light, cleaned the old gasket off of the back side of the light and the gasket material stuck to the outside of the hatch surrounding the opening for the light.
I used a RTV silicone gasket maker. I found mine leaking about three hours before the car was heading out to start a new life in my daughters possession. I didn't have anything else to use for a gasket on hand so the RTV will do until I see the car again and can install the proper gasket.

 

Check YouTube there are a few videos that show the repair process. Did mine a few years ago, used gasket maker shown in the video and no leak since.

Sent from my motorola one 5G ace using Tapatalk

 

Fix it yourself for $10 or less:

Third Brake Light Leak - FIXED

I found water in my rear cargo area and on the inside of the rear windshield after a recent hard rain. A search around this site found a few other threads (like this one), but no good solutions, so I decided to make one myself. The total time for this repair was about 30 minutes. Most of that...

www.subaruoutback.org

 

Had the exact same issue,
Use a window sealer like the auto glass shop uses.
Clean the area including the recessed area with a tooth brush, Put a masking tape on the glass and the breaking light edge and run inside the recessed area marked in the picture.

 

Just to close the thread. I followed the video and pic tutorials that others provided and after a car wash, I can say it is fully resolved (though no I have a leak on my windshield).

Thanks to everyone for your help!

 

Has anyone seen a similar leak in a Gen 5? ( I have a '17). Occaisionally there is water leaking down the inside of the rear hatch window. I do not believe this is from the 3rd brake light as in the Gen 5 that light is outboard of the glass at the end of that overhang spoiler. But there is a separet piece on top of that rear spoiler on the top of the rear hatch extending from the roofline - but it is on the hatch - not the roof. Never could figure out why that kinda insert piece is there - but I think that is where the water leaks in a Gen 5. I think that gasket is shot. Anyone familiar with this on a Gen 5?

 

Hi there.
Please post some pictures of the area of the leak so we can figure out a way to help.
10X

 

Any piece on the exterior that is installed at the factory using a foam gasket behind it will eventually leak. These lousy foam gaskets on automobiles date back at least to the 1990s. They all eventually break down and allow water leakage.

 

i have the same issue.... need to fix it also