if the car equiped with after market security system installed then open door with sparekey....car security alarm will go off.....open hood and disconnect battery terminal (if there is no trakker installed) now go back in the car and look for black/white/beige plastic box under the dashboard with wiring harness attached to it...most probably its the security system control box....remove wiring harness and attach battery terminal again..security system disable turn the ignition key and run away