Service data recorders in the vehicle are capable of collecting and storing diagnostic information about the vehicle. Potentially, this includes information about the performance or status of various systems and modules in the vehicle. Such systems and modules are the engine, accelerator pedal, steering, or brakes.
In order to properly diagnose and service the vehicle, a retailer/authorized repairer may access the vehicle's diagnostic information. To access the information, a direct connection to the vehicle is required.