Q4: You said you fixed my Audi and it has the same problem. Why did you not fix it right the first time?
A4: Most of the time, these issues are software or device communication issues. It is rare that a hardware (part or driving condition) cannot be resolved the first time. When your Audi has a software or device communication issue, we install a software update and test the devices that are having the communication issue. Sometimes these devices will work correctly when tested individually, but when working together they just don't like each other. In that case we have to guess which device is causing the problem. Most of the time we guess correctly. We then perform a full systems test and will not return your Audi until the system indicated that there are no problems with your Audi.
In other cases, we know there is a problem, but the root cause may be one of six or seven parts or conditions that are causing the problem. Because money is money, we always start with the cheapest solution. In the case of rotors, these means sanding them, this is much cheaper than replacing one for $850. It can be a long process until the final issue is resolved.