How do car immobilizers work? Simple Explanation
Direct answer: A car immobilizer checks for a unique encrypted code in the ignition key every time someone tries to start the engine. If the code matches the one stored in the vehicle's computer, the engine starts normally. If the code is wrong or missing, the immobilizer blocks the fuel pump, starter, or ignition circuit, and the engine will not run. Most cars built after 1998 have a factory immobilizer fitted as standard equipment. An immobilizer is one of the most effective anti-theft systems ever fitted to a vehicle. In ........