See also:

Troubleshooting guide
Verify the location of all Intelligent Keys that are programmed for the vehicle. If another Intelligent Key is in range or inside the vehicle, the vehicle system may respond differently than expect ...

Key positions
LOCK (0) Except for the Intelligent Key equipped model: The key can only be removed from the ignition switch at this position. For the Intelligent Key equipped model: PUSH OFF - The ignition ...

New for 2010
The Frontier receives only minor changes for 2010, centered around safety improvements and greater availability of driveline features. ...