A control device for a vehicle (1; 9), the vehicle (1; 9) including an electric power storage device and configured to charge the electric power storage device with an electric power supplied from a charger provided outside the vehicle (1; 9), the control device comprising: an input and output circuit configured to input a predetermined signal and to output the predetermined signal, the predetermined signal being a signal transmitted and received between the control device and the charger; and a control circuit configured to, prior to starting charging of the electric power storage device, prepare for charging of the electric power storage device by controlling transmission and reception of signals through the input and output circuit according to a predefined communication sequence, wherein the predefined communication sequence is defined in that a second signal is transmitted to the charger in response to the control device receiving a first signal at a predetermined timing, the first signal being one of (i) a signal that establishes a communication link between the control device and the charger and (ii) a signal for notification of the electric power suppliable from the charger, characterized in that the control circuit is configured to determine whether the first signal is received at the predetermined timing, and to proceed with the predefined communication sequence by transmitting the second signal to the charger when the control device has not received the first signal after a time defined in the predefined communication sequence has elapsed. the control device comprising: an input and output circuit configured to input a predetermined signal and to output the predetermined signal, the predetermined signal being a signal transmitted and received between the control device and the charger; and a control circuit configured to, prior to starting charging of the electric power storage device, prepare for charging of the electric power storage device by controlling transmission and reception of signals through the input and output circuit according to a predefined communication sequence, an input and output circuit configured to input a predetermined signal and to output the predetermined signal, the predetermined signal being a signal transmitted and received between the control device and the charger; and a control circuit configured to, prior to starting charging of the electric power storage device, prepare for charging of the electric power storage device by controlling transmission and reception of signals through the input and output circuit according to a predefined communication sequence, wherein the predefined communication sequence is defined in that a second signal is transmitted to the charger in response to the control device receiving a first signal at a predetermined timing, the first signal being one of (i) a signal that establishes a communication link between the control device and the charger and (ii) a signal for notification of the electric power suppliable from the charger, characterized in that the control circuit is configured to determine whether the first signal is received at the predetermined timing, and to proceed with the predefined communication sequence by transmitting the second signal to the charger when the control device has not received the first signal after a time defined in the predefined communication sequence has elapsed.