Patent ID: 8666607

Claim:
A steering control system of a vehicle, which includes driving force providing means capable of providing at least one of an input shaft and an output shaft that are involved in transmission of a steering input, with driving force for rotating the input shaft and the output shaft relative to each other, and locking means capable of placing the input shaft and the output shaft in a locked state in which the input shaft and the output shaft are unable to rotate relative to each other, comprising: first control means for controlling the locking means so that the input shaft and the output shaft are placed in the locked state when a given lock condition based on a load condition of the driving force providing means is satisfied; acquiring means for acquiring an actual steering angle index value of a rotational angle of the output shaft corresponding to an actual steering angle of the vehicle; and second control means for controlling the locking means so as to release the locked state if the acquired actual steering angle index value corresponding to the actual steering angle of the vehicle is equal to or smaller than a lock release threshold value that prevents the input shaft and the output shaft from being immediately brought back into the locked state based on the load condition of the driving force providing means.