- The dome light switch is in the "on" position. This is the most common reason why the interior lights stay on. The dome light switch is usually located near the front of the vehicle, above the driver's seat. Make sure that the switch is in the "off" position when you are not using the interior lights.
- A door is not fully closed. If a door is not fully closed, the interior lights may stay on as a safety feature to alert you that the door is open. Make sure that all doors are fully closed when you are not using the vehicle.
- The liftgate is not fully closed. The same principle applies to the liftgate as to the doors. If the liftgate is not fully closed, the interior lights may stay on to alert you that the liftgate is open. Make sure that the liftgate is fully closed when you are not using the vehicle.
- A faulty door switch. If one of the door switches is faulty, it may send a signal to the body control module (BCM) that the door is open, even when it is closed. This can cause the interior lights to stay on. You can test the door switches by opening and closing each door and checking to see if the interior lights turn on and off accordingly.
- A faulty BCM. The BCM is responsible for controlling the interior lights, among other things. If the BCM is faulty, it may cause the interior lights to stay on even when they are not supposed to. You can try to reset the BCM by disconnecting the battery for a few minutes. If this does not work, you may need to replace the BCM.
