If the seat belt tongue is deformed, it will likely need to be replaced entirely.

Items like paper clips, coins, and even small toys can get lodged inside the buckle, impeding the releasing and latching of the tongue.

Make sure the ignition is off and the key is removed.

Torque the bolts to 30 newton meters (or 20 pounds per foot). If torqued any harder, the bolts might be under too much tension to distribute force properly in the event of a crash. [12] X Research source