ONBOARD ECU, INFORMATION PROCESSING METHOD, AND ONBOARD SYSTEM

Provided is an onboard ECU communicatively connected to a plurality of onboard apparatuses installed in a vehicle and a vehicle control apparatus that performs priority determination relating to control of the onboard apparatuses that includes a control unit that executes processing relating to the control of the onboard apparatuses, wherein in a case where there is conflict in control targeting one onboard apparatus from among the plurality of onboard apparatuses or an associated onboard apparatus group, the control unit executes priority determination for the control; and an onboard apparatus which is a target for priority determination by the control unit and an onboard apparatus which is a target for priority determination by the vehicle control apparatus overlap at least at a portion.