Quote:
Originally Posted by redfred
Late last year my 2013 BRZ taillights were replaced under warranty. They leaked again, and were replaced yesterday; again under warranty.
The service tech explained that the boss where one of the mounting studs is located cracks. He showed me the pictures he sent to Subaru NA. The cracking is due to expansion/contraction of the unit during freezing months, I'm told. Here in Pittsburgh this year, we've seen our share of freezing temps.
The new replacement units have a redesigned foam gasket that allow the taillight housings to expand/contract without causing stress to the boss. Makes sense, just hope it works.
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This is definitely not the issue mine had, and replacing the lights themselves would've done nothing to fix the root cause as it is a design flaw.
The root cause is that the gasket is thin, not adhered well, and the top of each light is the drain path for the entire back window of the car. That's a LOT of water able to flow right onto the poorly sealed top of the lights. You can tell how much junk drains there when you pull off the lights and see all the dirt, leaves, and gunk piled up on top of the gaskets.
The GasketNinja replacements, with good sealant all around, and some removable putty along the top edge of the lights where the water drains solved it permanently.