2017 Kia Cadenza Brakes Problems

The contact owns a 2017 Kia Cadenza. The contact received notification of NHTSA campaign number 21V137000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was contacted and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

I WAS BRAKING APPROACHING A LIGHT ON A STATE ROAD, WHEN THE BRAKE WENT ALL THE WAY TO THE FLOOR SUDDENLY AND IT FELT AS THOUGH THE WHEELS LOCKED UP. THE VEHICLE SLOWED BUT DID NOT STOP, I REAR ENDED A VEHICLE IN FRONT OF ME.

BRAKE ISSUE: I HAD AN ACCIDENT DUE TO A BRAKE FAILURE ON THIS CAR. I WAS DRIVING VERY SLOWLY GOING DOWNHILL (SPEEDS 0 TO 10 MPH) IN A LINE OF CARS STOPPING AND GOING, STOPPING AND GOING MANY TIMES. AT FIRST THE BRAKE PEDAL FELT NORMAL AS PRESSURE WAS APPLIED THE CAR SLOWED THEN PETAL RESISTANCE WOULD DROP AND THE CAR WOULD SPEED UP DUE TO THE DOWNHILL GRADE. I APPLIED FOOT PRESSURE TO PETAL AGAIN AND THE SAME THING HAPPENED OVER AND OVER AGAIN. I SLOWLY RAN INTO THE BACK OF THE CAR IN FRONT OF ME. I HIT THE CAR IN FRONT OF ME MANY TIMES AS IT MOVED FORWARD. THIS CAR HAS AN AUTONOMOUS EMERGENCY BRAKING (AEB) EQUIPPED ON IT. THE AEB IS SUPPOSED TO APPLY BRAKES WHEN YOU'RE ABOUT TO HIT SOMETHING. IT'S SUPPOSED TO TURN OFF AT ABOUT 6 MPH, IN THIS TRAFFIC MY SPEED VARY THROUGH THIS POINT MANY TIMES. I FEEL THE CONSTANT ON AND OFF OF AEB CONFUSED THE CONTROL SYSTEM ON THE CAR AND CAUSE THE BRAKES TO MALFUNCTION. THE ROAD CONDITION WAS WET BUT NO STANDING WATER. THE ACCIDENT WAS NOT A SKID. THE TIRES ARE IN GREAT SHAPE THE CAR ONLY HAS 14000 MILES ON IT.