2002 Nissan Sentra Owner's Manual - Page 12
2002 Nissan Sentra Manual
Page 12 highlights
LRS0058 PD1319 WRS0096 When using the fold down rear seatback, the rear center seat belt retractor may lock up and prevent folding down the seatback. If the rear center seat belt retractor has inadvertently locked up, push the seat belt webbing toward the retractor as shown in the above illustration. This will unlock the seat belt retractor and allow the rear seatback to fold down. HEAD RESTRAINT ADJUSTMENT To raise the head restraint, pull it up. To lower, push and hold the lock knob and push the head restraint down. WARNING Head restraints should be adjusted properly as they may provide significant protection against injury in an accident. Do not remove them. Check the adjustment after someone else uses the seat. Adjust the head restraints so the center is level with the center of your ears. Seats, restraints and supplemental air bag systems 1-5