Just picked up a 2003 S4 Avant and driven it 200 miles back from London. The car is great, loads of power and on a slow journey back from London I got 30MPG from it which I was astounded at. Admittedly the M1 was clogged up badly and I rarely got over 70MPH but still good I thought.
However a couple of things I have now noticed that I wondered if anyone can help with. The climate control does not seem to have the air con working. I have put both sides on Auto but the Econ button is lit. Pressing the button causes the light to go out and then immediately come back on again. The engine has been out for a clutch / top end rebuild and I wonder if they just didn't regass the air con and maybe the Audi is clever enough to know the air con doesn't work so won't switch of econ mode???
Secondly the rear parking sensors don't seem to be working properly. Sometimes I get a single beep and then they seem to work, other times I don't get anything not even the initial beep when it goes into reverse and other times I get a constant beep. Is there a way to diagnose the problem?