The contact owns a 2021 Lincoln Navigator. The contact received notification of NHTSA Campaign Number: 23V598000 (Back Over Prevention) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had experienced a failure. The contact was in reverse (R) and backing up at approximately 2 MPH into her garage when the camera failed she crashed into the side of the garage entrance with the outer edge of the left rear bumper. The contact stated that the damage was minor and there were scratches on the left rear bumper edge only. The failure mileage was approximately 19,700. VIN tool confirms parts not yet available.