Hi Fran, thanks for the message. Its been a while since I was lurking around here! I did have the alarm and the battery, think that it was about £80 from Audi... People kept coming up with the alarm problem (beeps from the back of the car, right ?), but nobody took it. For some reason, mine struggled in teh very cold weather once over Christmas then for some reaon, cured itself hence the fact I never fitted it. It was a bit of a faff as it was under the Bose speaker stuff AFAIK.
Unfortunately when I sold the car it went too.
Hope you get sorted.
All the best. Rick