The contact owns a 2011 kia optima. The contact stated that while driving 55 mph and coming to a stop, there was an abnormally loud sound coming from the steering wheel. There was no warning light illuminated. The contact stated he was able to continue to drive the vehicle back to the residence. The contact received notification of nhtsa campaign number: 23v652000 (service brakes, hydraulic) however, the part to do the recall repair was unavailable. The dealer was not contacted for a diagnostic test or repair. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure but was unable to confirm when parts would be available. The failure mileage was approximately 128,000. Vin tool confirms parts not available. The vin was not provided.