<p>There is provided a vehicle steering system which includes an electric motor (M) for imparting a steering force to a steering mechanism (1) of a vehicle and an automatic parking controller for executing an automatic parking control by controlling the electric motor (M), wherein the automatic parking controller controls an energizing voltage of the electric motor (M) by imparting a square wave to the electric motor (M) and increasing/decreasing a neutral point voltage of a winding of the electric motor.</p>
