TL* THE CONTACT OWNS A 2008 LINCOLN MKX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THE BRAKE PEDAL SEIZED WHILE TRYING TO DECREASE VEHICLE SPEED. THE CONTACT WAS ABLE TO DECREASE VEHICLE SPEED BY APPLYING EXCESSIVE FORCE TO THE BRAKE PEDAL. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS CONFIRMED THAT THE MASTER CYLINDER FAILED, WHICH CAUSED THE RUBBER TO HARDEN ON THE BRAKE PEDAL. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS CONTACTED ABOUT THE ISSUE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS APPROXIMATELY 71,000 AND THE CURRENT MILEAGE WAS 72,500.