The present invention relates to an external module comprising: an interface physically connected to a vehicle so as to exchange data with the vehicle; and a processor for receiving peripheral information of the vehicle and state information of the vehicle through the interface, acquiring the ADAS information, on the basis of the peripheral information of the vehicle and the state information of the vehicle, and performing control so as to allow a display inside the vehicle to display the ADAS information by transmitting the ADAS information, through the interface, to the vehicle.