3rd brake light 2013 Ram 

Thanks, man!!! I think this fixed mine. The 3rd light was out (got pulled over) replaced it with a LED. Saw this video and swithed that light back to a regular bulb. My problem is fixed... So far. Nevermind, it came back on. Ram/Dodge really needs to fix this. It should be a recall or a class action suite against it. Too many people having the same problem. It's super annoying!

Good job on the goofy Ram wiring and faulty self diagnostics that the Ram trucks splash onto the dash at start up. My 2015 has the same passenger “Brake Light Out” message at start up even though the brake lights, flashers and turn signals ALL work perfectly. Hopefully I can check my third brake light and solve this issue. The error message should have been programed to be “Right or Third Brake Light Out”. There are loads of Ram truck guys dealing with this issue. Thanks for posting.

Just changed mine today in 2015 Ram Bighorn. Message said right rear, it was 3rd light. Put in led, message cleared and light working (for now).

i give this the hazel whitlock seal of approval!