Kudos to Lake City for properly diagnosing a strange problem I was having with my Ford Explorer. The vehicle went into limp mode, all the warning lights in the instrument cluster came on, it was undriveable. Lake city diagnosed it as a bad battery (which I found hard to believe), which was under warranty. So I took it back and got a new one, all the issues went away! I also had a non-functional A/C unit, which they checked and refilled and it works better than ever.