I have a 2012 F250 and am having a problem where the interior lights wont come on with the dash switch or when the doors are opened. I have confirmed that it is not a bad fuse, also the lights will come on when the switch on the individual lights is manually pushed, but not automatically like they are supposed to. I dont see it being a door switch issue because the door chime comes on and the stereo goes off when the doors are opened after turning the ignition switch off. I've read that the dealerships will switch out the BCM. I thought maybe the dimmer switch next to the headlight switch but there is no power to it whatsoever, which also I can't dim the instrument panel lights. So, has anyone else had this issue? What did you do to resolve? Thanks in advance!

 

I'm having this issue now on a '12 F350. I've confirmed also that it's not a fuse or door switch. I'll be following along here.

 

2012 f250 with same issue. Done lights work if individually pushed but don’t come on with door. The control button by headlights has power (or at least there is a light on). Can anyone say which relay to check? There looks like only one in the Cabin fuse panel. More options in engine bay.

 

Having the same problem as well. I first noticed them not working about 5 years ago. I've checked & replaced all fuses and relays that I thought could possibly be the reason. Havent changed out the dimmer switch because it will still dim the dash lights. I will be following as well, hopefully someone will have a solution. It seems to me that a recall should be done by Ford

 

Turned out to be fuse 12 on the truck I just worked on. Fuse LOOKED fine, but did not have power on both sides. This is the fuse box on the passenger kick panel. Hope this helps someone else. Don't trust the fuse even if it looks good.