Hi there boys and girls. Just picked up a second hand S4 Cabrio on a 54 plate, with just 45K on the clock. Love the car immensely but I have a couple of problems and queries. 1.) Occasionally when I take the roof down, the Radio stops working (just white noise). Anyone know what this could be? 2.) The Climate control decides to reset itself sometimes when i start the car up. Any ideas? My last question is, roughly how many miles are left in the tank when the reading says '0' miles left? Many thanks.