I have a similar problem in my 2012 Challenger. The living room overhead lights, outdoor porch light sometimes doesn't work. There is no reason to be found why they sometimes work and sometimes don't. Well I found the problem being in the fuse panel. I can take the fuse out and then put back in and everything will work fine. That is until I am driving motorhome and then when we stop or even while driving they might or might not work. Go to fuse box and take that fuse out and put back in it will start working once again. Taking into shop this week to get the fuse box change out.