The door lock actuator is a motor that can reverse the direction of gears. This component locks and unlocks your car's door by pushing a button.
Door lock actuator functionThe actuator operates alongside the other car door parts similar to the door lock switch. Most modern vehicles have a control module that transmits power to the actuator once it receives a signal from the switch. So when you press the power lock switch to unlock the door, the motor moves the lock to the unlocked position.
Common problems with a faulty door lock actuatorA faulty door lock actuator can act erratically or not work properly when you press a button.