Hi, I recently bought my Audi from auction around 2 months ago. Since the first day there has been problems with the battery running flat even though the battery itself is good. The driver's management light has never worked and there was problems with the stereo unit (not sure if the problems are connected). Now, everytime I drive the car I need a booster pack, it drives well until the engine is turned off. I make sure nothing is left on however even after a couple of hours I go to start the car and the battery is completely dead.

It seems something is draining power from the battery even when the engine isn't on. The alternator has been checked and deemed okay, do you have any ideas as to what might be causing the problem ?

Cheers in advance