The contact owns a 2021 Hyundai Palisade. The contact stated while the vehicle was parked, the safety belt on the rear driver’s and passenger’s side seats would unintentionally unlatch. No warning light was illuminated. The vehicle remained at the place of residence. A dealer was contacted however, the diagnosis was pending. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 58,000.