A control system includes a hydraulic pressure control valve and an electronic control unit. The hydraulic pressure control valve includes a spool configured to be moved inside a sleeve. The hydraulic pressure control valve is configured to control a hydraulic pressure by moving the spool between a first end and a second end of the sleeve. The hydraulic pressure control valve includes a stopper configured to transmit vibration to the sleeve. The electronic control unit is configured to control the spool to vibrate in the first end or the second end when foreign matter is stuck in the hydraulic pressure control valve, such that the spool or a member that moves the spool repeatedly hits the stopper.