I have a 05 AG 3.2 Quattro (63K) and now after I shut the car off there is a nosie that sounds like a relay opening and closing.. which sounds like it could be coming from the drivers side rear wheel well ..it lasts for approx 30 seconds or so... I don't seem to notice it when the car is running. There are no warning lights on inside the car so I am totally stumped on what this could be. Any help on what this could be or be greatly appreaciated.