A scan tool is used to check for any diagnostic trouble codes that may be present in a vehicle in for service or repair. James Halderman photo

Reader asks why car was scanned at body shop

By performing a complete module scan, the body shop not only protected themselves against possible legal action, it was a case where it was helpful to you to know that one of the modules in your vehicle had flagged a fault that was not yet serious enough for the on-board computer to turn on a dash warning light. Look for this to become more and more common throughout the automotive service industry.