The contact owns a 2001 Ford Ranger. The contact stated that while the vehicle was parked, it was discovered that the anti-theft system was inoperable and failed to function as designed. The anti-theft warning light was illuminated. The contact had to remove the key fob several times to start the vehicle. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 200,000.