A vehicle control system includes a terminal including a storage unit to store additional function information generated by software configured to add a new function to functionality of at least one electronic device mounted on a vehicle and a first communication unit to output the additional function information, and a vehicle control device including a second communication unit to communicate with the terminal through the first communication unit and configured to add a new function to the at least one electronic device based on the additional function information obtained from the terminal through the second communication unit.