Right i have my car over the pit just now as iam doing a check and undersealing it at same time. However i came across a broken part! its a small black box with an arm which is then conected to the suspension arm of the passenger real wheel. the box is fitted to the body to the side of exhaust and has an electrical connector. Part Number is - 4B0 907 503 looks like its been broken for a while and car is running ok no warning lamps but i want too fix this now anyone know where i can source this part at a reasonable price?? i guess i will mail order it as iam in shetland however if anyone can recomend somewhere in Aberdeen?? Audi in Aberdeen dont have a good reputation!! The Car is a 2002 S3 with 225 engine Anyone help??