In a complex machine such as a vehicle, the apparatus and control system notifies the machine or vehicle electronic control unit, if present, as well as maintaining a post event timer or counter that is specifically designed to help the component or subsidiary system OEM determine fault detection, failure diagnosis, and time dependant post event actions that are or are not taken by the operator of the machine or vehicle. The information that is kept by the onboard OEM datalogger is designed for their use first, as well as for the vehicle manufacturer.

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