2006 Nissan Sentra Owner's Manual - Page 28

To increase your confidence in the seat belts, check the operation as follows. ● Grasp the shoulder belt and pull forward quickly. The retractor should lock and restrict further belt movement. If the retractor does not lock during this check or if you have any questions about seat belt operation, see a NISSAN dealer. WRS0139 WRS0140 Unfastening the seat belts 1 Center of rear seat Selecting correct set of seat belts: The center seat belt buckle is identified by the word "CENTER." The center seat belt tongue can be fastened only into the center seat belt buckle. To unfasten the seat belt, press the button on the buckle. The seat belt automatically retracts. Checking seat belt operation Seat belt retractors are designed to lock seat belt movement by two separate methods: ● When the seat belt is pulled quickly from the retractor. ● When the vehicle slows down rapidly. 1-12 Safety-Seats, seat belts and supplemental restraint system