I know this is an older thread and sorry to revive it, but i'm having the same issue every time I take my truck out of park. I get the passenger rear brake light is out. I have the LED tail lights from the factory, as that's what came with my 2013 1500 Sport. I've checked it and the bulb clearly works fine and the turn signal never flashes fast. I've inspected it and everything seems tight. I took it apart and the connectors all look good. I even blew it out to make sure there was no dirt in there, and then when I was sure there wasn't, I added a little dielectric grease just to make sure no moisture was getting in there. I put everything back together tightly. I'm still getting that damn ding every time. Is there a place where the wiring harness likes to short out or something common that I can look at and maybe tape up or fix so that this stupid message goes away?? I'm tempted to get an AlphaOBD but I don't want the light going out and then not know about it until I get a ticket. Any help is appreciated!