The contact owns a 2018 Ram 3500. The contact stated while driving at undisclosed speeds, the brake lights illuminated. There was an abnormal dinging sound detected. The contact received notification of NHTSA Campaign Number: 24V896000 (Service Brakes, Hydraulic); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact called another local dealer, but the vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The approximate failure mileage was 29,999. VIN tool confirms parts not available.