An on-vehicle electronic device that includes a front chassis that is arranged near a front surface of the main unit of the on-vehicle electronic device such that the front chassis is capable of tilting and from which and to which a panel is detachable/attachable, and a drive mechanism that makes the front chassis tilt with respect to the front surface of the main unit of the on-vehicle electronic device, the on-vehicle electronic device comprising: a power supply unit that performs power supply to the main unit of the on-vehicle electronic device; a drive control unit that performs drive control on the drive mechanism such that the front chassis is tilted from an initial position, in which the front chassis lies along the front surface of the main unit of the on-vehicle electronic device, to a panel attachment waiting position, in which the front chassis forms an angle with the front surface of the main unit of the on-vehicle electronic device, the drive control being triggered to tilt the front chassis by starting of the power supply performed by the power supply unit; a panel attaching detection unit that detects whether or not the panel is attached to the front chassis, after the front chassis has been tilted to or while the front chassis is being tilted to the panel attachment waiting position by drive control performed by the drive control unit; and a start-up control unit that, in the case where the panel attaching detection unit has detected that the panel is attached to the front chassis, starts up the main unit of the on-vehicle electronic device and makes the on-vehicle electronic device enter a state in which the main unit of the on-vehicle electronic device is usable and that, in the case where the panel attaching detection unit has detected that the panel is not attached to the front chassis, puts the main unit of the on-vehicle electronic device on standby until the panel attaching detection unit detects that the panel has been attached to the front chassis at which point the main unit of the on-vehicle electronic device starts up. a power supply unit that performs power supply to the main unit of the on-vehicle electronic device; a drive control unit that performs drive control on the drive mechanism such that the front chassis is tilted from an initial position, in which the front chassis lies along the front surface of the main unit of the on-vehicle electronic device, to a panel attachment waiting position, in which the front chassis forms an angle with the front surface of the main unit of the on-vehicle electronic device, the drive control being triggered to tilt the front chassis by starting of the power supply performed by the power supply unit; a panel attaching detection unit that detects whether or not the panel is attached to the front chassis, after the front chassis has been tilted to or while the front chassis is being tilted to the panel attachment waiting position by drive control performed by the drive control unit; and a start-up control unit that, in the case where the panel attaching detection unit has detected that the panel is attached to the front chassis, starts up the main unit of the on-vehicle electronic device and makes the on-vehicle electronic device enter a state in which the main unit of the on-vehicle electronic device is usable and that, in the case where the panel attaching detection unit has detected that the panel is not attached to the front chassis, puts the main unit of the on-vehicle electronic device on standby until the panel attaching detection unit detects that the panel has been attached to the front chassis at which point the main unit of the on-vehicle electronic device starts up.