2003 Nissan Altima Owner's Manual - Page 34

● 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. WRS0170 WRS0171 Center of rear seat Selecting correct set of seat belts: The center seat belt buckle is identified by the CENTER mark. The center seat belt tongue can be fastened only into the center seat belt buckle. Shoulder belt height adjustment (For front seats) The shoulder belt anchor height should be adjusted to the position best for you. (See "Precautions on seat belt usage" earlier in this section.) The belt should be away from your face and neck, but not falling off your shoulder. Release the adjustment button to lock the shoulder belt anchor into position. To adjust the shoulder belt anchor height: 1 Push in the adjustment button. 1-28 Seats, restraints and supplemental air bag systems