Someone installed an aftermarket security system , and that would be the 'code/signal' source to 'unlock' it.
Thanks for the answer. Can I easily disconnect this kill switch? Key fob for alarm is missing. No key fob for keyless entry as well.
Don't know without knowing the system and how it's hooked in. If you have the skill/experience to dig into the wiring and determine what doesn't belong , and how to put it back to factory , then , yes it could be removed.