The battery was drained and the car would not start. Thought my son, who had driven it last, was negligent in leaving something on. Turns out the interior overhead light which comes on when the door is open, will not shut off automatically. Thus, when you open the door to exit the car, the light is comes on but stays lit when the door is closed and drains the battery. You have to open the door, press the center black button to shut off the light manually, and exit the car. Any thoughts on what part to replace? Was thinking the logical place to start would be to test if the passenger door is any different. Might be something with the trigger on the driver's door?