See also:

Battery replacement
Be careful not to allow children to swallow the battery or removed parts. ...

Adjustable headrest (if so equipped)
WARNING: The adjustable headrests supplement the other vehicle safety systems. They may provide additional protection against injury in certain rear end collisions. Adjust the headrests prope ...

Advanced Safety Systems, A Variety of Models and Packages
The 2009 Frontier includes a long list of safety equipment, including Zone Body construction with front and rear crumple zones, Nissan Advanced Air Bag System (which includes dual-stage front supp ...