Frequently in the Hyundai Sonata NF salon, with a high mileage at the seat belt anchorage, a Luft appears. They were chatting away from the vibration, and they started making noise. The reason for the sound is too small a gap between the lining and the torpedo. On the rough road, the body vibrates, and the two parts are in contact.
Many owners prefer simply to consute, for example, a strip of skin. A more robust approach involves the removal of the lining and the gluing of its internal vibration-proofing material.