How do you reset the anti theft system on a 2003 Hyundai Santa FE?

To reset the anti-theft system on a 2003 Hyundai Santa Fe, first, ensure that the vehicle's doors are closed. Insert the key into the ignition and turn it to the "On" position without starting the engine. Leave it in this position for about 10 minutes, then turn it off and try starting the vehicle. If the system is still engaged, you may need to consult the owner's manual or a professional for further assistance.