The contact owns a 2021 Hyundai Palisade. The contact stated while driving 30 MPH, the contact became aware that the seat belt had independently unbuckled from the seat belt buckle. The contact stated that the failure had occurred twelve times. The vehicle was not taken to a dealer to be diagnosed; however, a dealer was contacted. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The approximate failure mileage was 35,000.