What is the flashing red dot on a car at night?

[MargaretFitz]

The flashing red dot on a car at night is the anti-theft light, usually located near the car window. Below is an introduction to the function and working principle of the anti-theft light. Function of the anti-theft light: The regular intermittent flashing of the car's anti-theft indicator light indicates that the car's anti-theft system is active, serving to show that the anti-theft device has been activated. Working principle of the anti-theft light: Normally, the anti-theft light flashes at a frequency of once every 1 to 2 seconds, powered directly by the battery and not controlled by the ignition key. The anti-theft light is part of the car's anti-theft system. If it stops flashing, it indicates a malfunction in the anti-theft system, requiring prompt inspection and repair.