Nissan LEAF 2023 Owners Manual
5.2.1. Adjustable head restraints
The adjustable head restraints supplement the other vehicle safety systems. They may provide additional protection against injury in certain rear end collisions. Adjust the head restraints properly, as specified in this section. Check the adjustment after someone else has used the seat. Do not attach anything to the adjustable head restraint stalks or remove the adjustable head restraint. Do not use the seat if the adjustable head restraint has been removed. If the adjustable head restraint was removed, reinstall and properly adjust the head restraint before an occupant uses the seating position. Failure to follow these instructions can reduce the effectiveness of the adjustable head restraints. This may increase the risk of serious injury or death in a collision.
The illustration shows the seating positions equipped with adjustable head restraints.