How do you reset the factory anti theft security system on 2004 Chrysler pacifica?

To reset the factory anti-theft security system on a 2004 Chrysler Pacifica, first ensure the vehicle is unlocked. Insert the key into the ignition and turn it to the "On" position without starting the engine. Leave the key in this position for about 10 minutes until the security light turns off, then turn the key to the "Off" position and attempt to start the engine. If the system is still not reset, consult the owner's manual or a professional mechanic for further assistance.