The contact owns a 2020 Cadillac XT4. The contact stated that while driving at an undisclosed speed on the highway, the Forward Collision Avoidance feature indicated that there were pedestrians ahead on the road, but there were no pedestrians on the road. The contact stated that later, while pedestrians were present, the Forward Collision Avoidance feature failed to operate as designed. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 73,000.