The contact owns a 2023 Ford Maverick. The contact stated that while reversing, the back over prevention camera display failed to function as intended. The contact stated that the back over prevention camera display screen had frozen. The dealer was made aware of the failure; however, the contact was advised that a diagnostic test fee was required. The contact received notification of NHTSA Campaign Number: 24V684000 (Back Over Prevention); 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 not made aware of the failure. The failure mileage was approximately 14,939. VIN tool confirms parts not available.