I have a 2003 A4 quattro, I know that when I lock or unlock the doors there is supposed to be a beep that follows shortley after, and also when i press the paninc button the alarm is supposed to sound. It was working about half a year ago, but suddenly stoped. I am wondering what the problem is? I heard that the problem might either be a fuse located in the trunk or the actuall 'beep' itself? can anyone help me?