See this story as well as
See this story as well as Scotty is going to get someone hurt. I work in a service department and depending on what the issue is, it can take time. We've had a car for months trying figure out a battery drain. Most vehicles brakes and accelerator is computer controlled. So it's not just a quick diag. All those computers are tied together so if the problem is intermittent. It will take a while. No the issue is customers who listen to this and tries to rush us through the diag or say my mechanic said it's this. Well if your mechanic doesn't have the manufacturer specific computers, then he is in fact taking a guess. If that wasn't the case, well your mechanic would have fixed the problem.