I had the same problem with my 1999 a8, took it in to be serviced and they had to replace a vacuum hose which is shaped like a Y,and they had to replace the brake and abs sensors total cost was eleven hundred dollars
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no still did not work any more suggestions
I had the same problem with my 1999 a8, took it in to be serviced and they had to replace a vacuum hose which is shaped like a Y,and they had to replace the brake and abs sensors total cost was eleven hundred dollars