When an abnormality detection unit detects an abnormality in a vehicle brake system, a heat generation suppression unit operates the motor intermittently to suppress heat generation by the motor. A pressure increase determination unit determines whether there is a need to increase pressure to the wheel cylinders of the brake system. When there is a need to increase pressure to the wheel cylinders, the heat generation suppression unit operates the motor. When there is no need to increase pressure to the wheel cylinders, the heat generation suppression unit stops the motor.