The contact owns a 2018 Ram 2500. The contact stated that the vehicle failed to start as intended. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact received notification of NHTSA Campaign Number: 24V896000 (Service Brakes, Hydraulic); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was 100,000. VIN tool confirms parts not available.