Why is the car lock icon flashing?
2 Answers
The flashing car lock icon indicates that the anti-theft system is activated. This is the anti-theft system indicator light. It is normal for it to flash after locking the car. The car anti-theft system is designed to prevent the theft of the vehicle itself or items inside the car. The primary function of the car anti-theft system is to prevent unauthorized individuals from using the vehicle's own power to steal it, specifically by preventing illegal engine startup. The vehicle anti-theft system and the engine immobilizer system are essential for vehicle security, consisting of electronically controlled remotes or keys, electronic control circuits, alarm devices, and actuators. The engine anti-theft system automatically activates when the key is removed from the ignition switch or when the authorized electronic key is taken out of the vehicle. If the control indicator flashes when the ignition switch is turned on, it indicates a system malfunction, and the engine cannot be started. Turn off the ignition switch and try starting again. If the control indicator continues to flash, attempt to start the engine with a spare key. If the vehicle still cannot be started, contact a repair shop for assistance.
I noticed that the small car with a lock icon keeps flashing, which actually means the vehicle's anti-theft system is active. The technician mentioned during my last car service that after turning off and locking the car, this light starts flashing to indicate the anti-theft system is engaged, primarily to prevent unauthorized access to your vehicle. If it continues flashing while driving, there might be an issue—like the anti-theft system malfunctioning or a weak signal from the key chip—in which case it's best to pull over and check. Normally, seeing it flash when parked is reassuring, but if it behaves abnormally—flashing irregularly or staying lit during the day—it's likely a sign of sensor or wiring problems, and a visit to the dealership is advisable.
