2002 Ford F-250 Electric door locks, headlights, dome light

2 weeks ago I went to lock the truck (XLT)with the key fob and nothing happened. The same for the electric door locks inside. Also the dome light won't come on when opening the door. The thing that's not related to the doors is the automatic headlight postion (to the left) doesn't work either. The "door is ajar" light is always on but the dome does come on normally when the truck is shut off. Windows, and all other electrical works and I see no bad fuses connected to any of these issues. Could this be a computer issue? (Funny that it's junk that shouldn't be on a truck anyway.)