The most likely cause for your interior lights not going off is that one or more of the door switches is not working properly. When a door is opened, the switch is activated and the light turns on. When the door is closed, the switch is deactivated and the light turns off. If a switch is damaged or malfunctioning, it may cause the light to stay on even when the door is closed.
Fuse
Another potential cause is a blown fuse. The interior lights are connected to a fuse that protects them from electrical surges. If the fuse has blown, it will need to be replaced in order for the lights to work again.
Wiring
Finally, it is also possible that there is a problem with the wiring that connects the lights to the switches or the fuse. If this is the case, you will need to consult with an automotive electrician to have it diagnosed and repaired.
