The contact owns a 2006 Mercury Milan. The contact stated that while depressing the brake pedal, there was an extensive amount of time between depressing the brake pedal and when the vehicle would come to a stop. Occasionally, the contact had to pump the brake pedal to assist while stopping the vehicle. There were no warning lights illuminated. The vehicle was included in NHTSA Campaign Number: 19V904000 (Service Brakes, Hydraulic,) and the vehicle was repaired; however, the failure persisted. The vehicle was taken to the dealer, who diagnosed the vehicle and determined that the HCU had failed and needed to be replaced. The vehicle was not repaired. The vehicle was taken to another dealer, Ray Skillman Ford (1250 US 31 S, Greenwood, IN 46143), who confirmed the diagnosis. The vehicle was not repaired because the vehicle was no longer covered under the recall. The manufacturer was informed of the failure, and a case was opened. The failure mileage was approximately 166,230.