The distance threshold to be used in vehicle control such as the time constant, the unlocking of the door, so that can be easily customized to match the desire of the user.
The vehicle control system 100, the vehicle as the first mobile device 2, and a vehicle control unit (1) mounted on a (V), for performing the vehicle control system 1 to communicate with the first mobile device 2, and It consists of a second portable device 3 performs communication. A first mobile device 2, the second portable device 3 from the user (P) on by the first operation is performed binary basis to a second vehicle control apparatus a first signal requesting the transmission of the signal (1 ) to the. The vehicle control system 1, the first when receiving the first signal from the mobile device 2, and intermittently transmitted in a second signal to the first mobile device 2. A first mobile device 2, the second on the basis of that binary performing a second operation by the user (P) after the first operation in the portable device 3, a second signal received from the vehicle control unit (1) the signal strength is measured. The vehicle control device (1) or first mobile device 2 sets the first distance to the portable device 2 and the vehicle (V) is calculated from the measured signal strength as the distance threshold.