Hello all. I recently bought an A8 2.8 sport (nov 2000) after years of uming and aring. I was hoping that some one may have an answer to a small niggle. I am getting a ticking/cliking sound from behind dash centre console area. The mechanic at the garage I bought the car from said it could be somthing to do with aircon. This seems to hold as if I have diffenant vent controls on (next to temp setting) the noise moves or is quieter/louder. It does not seem to affect any opperations its just starting to get on my nerves.