Why does the Ford Focus anti-theft light flash and fail to start?

[VanLaila]

This is because the engine anti-theft function is activated, and the computer system data is lost. Below is some introduction about car anti-theft (car security lock): 1. Introduction: A car security lock is a type of car safety lock used to secure the vehicle's steering wheel, consisting of a lock rod, lock body, and lock handle. 2. Principle: Bent rods are welded on the lock rod and lock handle respectively, and threads are set at the right end of the lock body, connecting with the lock handle via threads. When in use, the bent rods clamp the inner side of the steering wheel, aligning the lock handle part with the seat, thus preventing unauthorized drivers from operating the steering wheel and thereby preventing vehicle theft. The security lock features simple structure, ease of use, safety, reliability, and strong anti-theft capabilities, making it an ideal lock for vehicle self-security protection.