What does 'Please Service Theft Deterrent System' mean in Chevrolet?

[OAddyson]

Please Service Theft Deterrent System indicates a malfunction in the vehicle's anti-theft system. Below is relevant information about automotive anti-theft systems: 1. Introduction: To enhance anti-theft functionality, some vehicles are equipped with a steering lock. The steering lock is designed to secure the vehicle's steering column. It is integrated with the ignition lock and installed under the steering wheel, controlled by the key. Specifically, after the ignition lock cuts off the ignition circuit to stop the engine, turning the ignition key to the extreme left position will extend the lock tongue into the steering column groove, mechanically locking the steering column. 2. Types: An automotive anti-theft device is installed in the vehicle to increase the difficulty of theft and prolong the time required for theft, serving as the guardian of the car. By connecting the anti-theft device to the vehicle's electrical circuit, it can prevent vehicle theft, intrusion, and protect the car while enabling various functions of the anti-theft device. With advancements in technology, to counter increasingly sophisticated car theft methods, various types and structures of anti-theft devices have been developed. Anti-theft devices can be categorized into four main types: mechanical, transponder (chip-based), electronic, and network-based.