Fitted on the surface of internal plastic trim on the edge of the foot well, between the hood release lever and the drivers door (this is a right hand drive UK car) is a small button shaped object, about 15 mm in diameter and stands about 5 mm proud. There is a little red light near the top of this button, and a small round switch near the bottom. If you push the switch, the top red light illuminates. Anybody know what this does? I have never seen anything like this on a car before.