What does code mean in a car?

[JulietLee]

Car code refers to the vehicle anti-theft system. Below are the specific details about the car anti-theft system: 1. Car code is a detection chip in the vehicle. If the chip is not detected, the dashboard indicator will illuminate. When this indicator lights up, the engine cannot be started, and repeated attempts to ignite may lock the engine, commonly known as engine immobilization. 2. For vehicles equipped with a keyless system, pressing the unlock button or the keyless button on the driver's side door handle will open the door and deactivate the vehicle's security alarm. Switching the power to the ON position will complete the engine anti-theft authentication, and the anti-theft indicator on the dashboard will turn off. 3. After unlocking, if any door, window, or ignition switch is not opened within 30 seconds, the doors will automatically lock again, reactivating the security alarm. Do not modify or install other types of anti-theft systems on the vehicle, as this may damage the vehicle's central control unit and affect other electrical equipment.