AUTONOMOUS DRIVING DEVICE, AUTONOMOUS DRIVING METHOD, AND NON-TRANSITORY STORAGE MEDIUM

An autonomous driving device (21) includes a plurality of driving function ECUs (211; 212) having a function of driving a vehicle (20) in place of an occupant, and a driving function switch ECU (214) configured to individually change operating states of the driving function ECUs (211; 212) according to a route to a destination and remaining power. The driving function ECUs (211; 212) include an autonomous driving ECU (211) configured to autonomously drive the vehicle (20), and a remote control ECU (212) configured to operate the vehicle (20) according to remote control from outside.