Supplemental restraint system
Nissan Altima / Nissan Altima Owners Manual / Safety—Seats, seat belts and supplemental restraint system / Supplemental restraint system
See also:
Components
1. Head restraint
2. Adjustment notches
3. Lock knob
4. Stalks
5. Release knob ...
Center armrest (if so equipped)
Pull the armrest down until it is horizontal. ...