Hialeah 2003 Volkswagen GTI
Diagnostic on complicated issues require a bit more persistency to identify root cause. Obviously with a back log of car work, it is hard to spend too much time but it helps in reducing rework. Perhaps review of technical bulletins from VW may help in understanding factory documented issues. Not sure if German has access to that information, but it could help in pointing to the right root cause much quicker. Anyhow, need to take car back for additional diagnostics, will see if this time we get it.