I've had my car for just over two years the abs light was on when I bought it. I took it to an Audi dealer just outside of Glasgow for a service and to check abs system,was told when I went to pick car up they would need one hour to check problem.Booked it in for the next day only to turn up and be told they need 3 hours to check fault. when I went to book it in the next day for this the time required to check had jumped to almost 12hrs at a cost of£60per hour and they could not promise to find the problem,as you can imagine I told them where to shove thier dealership .Can anyone help with ideas wat may be wrong they did tell me the abs system is not comunicating with their computer