TL*THE CONTACT OWNS A 2007 UNITED MOTORS MATRIX 170 SCOOTER. WHILE ATTEMPTING TO MAKE A LEFT TURN AT APPROXIMATELY 20 MPH WITH PRESSURE APPLIED TO THE FRONT END BRAKE, THE HANDLE BAR LOCKED UP WITH A LOUD NOISE. THERE WAS ALSO A JERKING SENSATION AND THE CONTACT EXPERIENCED DIFFICULTY STEERING. HE WAS EJECTED FROM THE SCOOTER. THE FAILURE OCCURRED WITHOUT PRIOR WARNING. THE CONTACT SUSTAINED MINOR INJURIES. THE SCOOTER WAS TAKEN TO THE AUTHORIZED DEALER ON THREE SEPARATE OCCASIONS FOR THE FAILURES. THE FAILURE AND CURRENT MILEAGES WERE 215.