A vehicle control unit includes an engine switch, an idling stop controller and a power supply controller. When the engine switch is depressed in a state where the engine is automatically stopped by the idling stop controller, the idling stop controller restarts the engine in a case where a relationship between an operating time during which the engine switch is depressed and a predetermined reference time satisfies a predetermined condition, and the power supply controller switches a power supply mode in a case where the relationship between the operating time and the reference time does not satisfy the predetermined condition.