Why doesn't the car door open when pressing the unlock button?

[LeKylie]

If the car door doesn't open when pressing the unlock button, it may be due to a damaged door lock actuator. Here's an introduction to door lock actuators: 1. Definition: A car door lock actuator is a specialized term, essentially referring to the car door lock controller. 2. Device: It serves as the control device that provides locking/unlocking pulse current to the door lock actuator. 3. Function: Regardless of the type, all door lock actuators control the left-right movement of connecting rods by changing the direction of electrical current, thereby achieving door locking and unlocking. The worm gear fixed on the motor output shaft meshes with a gear, while the gear's inner chamber meshes with a swing arm. Its working principle is: the vehicle's current source powers the motor, whose rotation is converted into the swing arm's oscillation, thus completing either an opening or closing cycle.