I have a 99 A6 Avant and my car alarm was going off for no reason every 5-10 minutes. I unplugged the positive part of battery and was able to disarm the alarm. Then my radio was in safe mode, I put the code in and got that back. But now my power windows don't work, how do I get those back? And my back windows have never worked, I don't know why. I'm not too worried about them, but I would like my front power windows back!