Two years ago I was driving into work and all of a sudden my interior dome lights popped on. No matter what I do they stay on constantly. The only way they will turn off is if the battery saver feature kicks on, but once you unlock the door or open it they will stay on again. The car is also equipped with the digital driver information center which shows the status of the doors. It illuminates which door is open and that has been operating as it should. Replaced the headlamp/dimmer switch which is one unit, replaced the BCM still no good. Spent many many hours of diag between two different shops as well as research on my own & no solution can be found. My only solution was to pull the courtesy lamp fuse which left me with no dome lights. Its very annoying at night when you can't see anything.