The contact owns a 2019 Ford Expedition. The contact stated that while driving 50 MPH, the contact heard a loud bang noise coming from the left driver's side, and afterwards her seat belt retracted independently, causing the contact to have bruising to her left collarbone. There was an unknown odor present during the failure. The contact stated that the seat belt performed as if the vehicle were involved in an impact; however, there was no impact. An Independent mechanic was contacted. The vehicle was not taken to an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and offered no assistance. The approximate mileage was 93,672.