Hi va-terps4. Apologies for the multiple threads.
Welcome to the forum. I'm sure there are LOT of people here who are interested in the racetrack tail lights on Durangos.
Water incursion has been going on since they first started using this design element - I think it goes all the way back to 2014 models. There doesn't seem to have been any meaningful design change since then, despite water intrusion being a well known issue in the community - that includes owners, dealers, and everybody who sees them on the street.
People are reporting $1200-1400+ bills to replace the entire unit, since there is really no way to perform a simple bulb replacement in the design. A few industrious folks have attempted to repair broken units themselves, to varying degrees of success. But for all intents and purposes, it is not a serviceable item.
So those who have had problems in the past, those who currently have problems, and those who will eventually end up having problems with water in this component are all very interested in seeing two things: 1) an engineering solution that stops the water problem, and 2) some sort of acknowledgement and/or coverage for the replacement or repair to this unit.