Does anyone know what that flap/visor is for, that is located just in front of the interior light unit above the rear view mirror on the Audi A3, 8P? It has a small circular recess/opening on the front of the flap, maybe a sensor of some sort. I had this flap/visor on my '04 A3 & i have it on my '12 A3 Black Ed. but i have no idea what it's for??