The contact owns a 2010 BMW X5. The contact stated while starting the vehicle, after several minutes the vehicle failed to turn off as needed. There was no warning lights illuminated. The vehicle was towed to an independent mechanic where it was diagnosed that metal shavings were found in the engine, and the oxygen heat sensor had failed. The vehicle was repaired. The contact advised the previous owner was notified of NHTSA Campaign Number: 16V746000 (FUEL SYSTEM, GASOLINE). The contact was not aware of the recall notification. The contact stated that the prior owner had the recall repair performed; however, the failure occurred. The manufacturer was not notified of the failure. The failure mileage was 127,911.