I picked my new A3 up on Saturday and for some reason the clock has stopped working! anyone know how I can fix it? is the display faulty? This may sound stupid, but my other question was - When does the fuel gauge light up to let me know I'm in the reserve tank? Is it when the needle hits the 1st red line? (arrow) As you can see from the photo, I've got 1/4 of a tank left, and the trip computer estimates 100miles left - does this seem pretty accurate? (2.0 TDi) I just wanted to clarify... Thanks.