Why does the car's center console button light stay on?

[Cassandra]

Some cars have a red indicator light flashing on the dashboard or center console after locking. Generally, as long as the light is not constantly on, there is no problem. A constantly lit light is usually the door-open indicator, which means a door might not be properly closed. In this case, the car cannot be locked, and you need to check the doors and trunk. Introduction to the Engine Immobilizer System: Many modern cars are equipped with an engine immobilizer system. This system includes a security chip in the car key that stores a unique code matching the vehicle. When a valid key is used to start the engine, a coil in the ignition switch reads the key's code. If the code matches the vehicle, the engine starts; otherwise, it remains immobilized, preventing theft. System Operation Status: After locking the car, the engine immobilizer system automatically activates and illuminates an indicator light, which typically flashes at 1-2 second intervals. Some vehicles may also have the engine immobilizer system enter operation immediately after turning off the engine, with the indicator light flashing continuously.