I have owned my 2002 Volkswagen Passat 1.9 TDI with a Tiptronic gearbox for a few months. Recently I have noticed a rattle noise coming from, I believe, the auto box or thereabouts. I know this because when Drive “D” is selected and I pull up at the lights, with my car windows down I can hear the rattle. When I select Neutral “N” the noise goes away. If I select the lower gears i.e. 4, 3 or 2 it rattles, even when the car is not moving. When I start to drive off the rattle remains, say up to 10 to 15mph, and then the noise goes away. As I slow back down to below 15mph and when then I come to a stand still again, I can hear the rattle. When I select Reverse there is no noise.