im having a few problems with my car. i have an Audi S3 and my battery keeps going flat.
go to the car in the morning, put the booster on it, go to work about 15-20 min drive, 1 hour later battery dead.
i checked it with a volt meter the alternator is charging it fine (14 volts) and when the car isnt running it stays at around 12.3 to 12.1.
i plugged vagcom into it, a few errors but nothing related.
any ideas? could it be the waterpump that runs after the engine is off?