The contact owns a 2015 Acura MDX. The contact stated while driving at an undisclosed speed, the tailgate lid lights did not function as intended. The contact was pulled over by the local Police and was informed that the taillights were not operating. The vehicle was taken to another local dealer where the vehicle was diagnosed with failed tailgate lid lights. The contact was informed that the tailgate lid lights needed to be replaced. The vehicle was not repaired. The contact was advised that the manufacturer had denied the repair under warranty or unknown recall repairs. The contact stated that the vehicle was previously serviced by the dealer, and the previous dealer performed a recall repair under NHTSA Campaign Number: 19V256000(Exterior Lighting); however, the failure reoccurred. The manufacturer was made aware of the failure and a case was filed. The manufacturer denied the repair under warranty because of the failed recall repair. The failure mileage was approximately 185,000.