There are two lights for lighting up the ground ("puddle lights") in the front front doors.The two door control units detect the status of the doors, notify the Body Computer and directly control the switching on of the bulb in the door.The opening of one of the front doors causes the relevant light to come on for a maximum of 3 minutes; when this time has expired the light can only be switched back on again after the door has been reopened.The closing of the driver''s door causes the two lights to go out immediately.