Hi Bob

I have encountered the same four beeps in my 52 plate A6 2.5 TDI. I was very puzzled as to what beeping sound meant. Sometimes it happened when just a few seconds after the car was started - sometimes it didn't happen at all. However, it has since stopped beeping - I didn't have any work done on the car and I didn't find any problems - it just stopped all by itself.

Sorry I haven't been able to offer an explanation, but hopefully it is not a sign of a costly problem.

SS