How Auto Door Locks Work

In some cars that have power door locks the lock unlock switch actually sends power to the actuators that unlock the door.

How auto door locks work.

Key fobs such as this one activate the power door lock mechanism. Here s how the power door locks and latch works on your car. When locked the latch will be depressed and the mechanism will be connected to prevent the door from being opened. The door latch on a car door is responsible for keeping the door shut against the body of the ca.

Centrifugal clutch on the drive gear when the motor spins the gear the clutch swings out and locks the small metal gear to the larger plastic gear allowing the motor to drive the door latch. A rod con nects the actuator to the latch and another rod connects the latch to the knob that sticks up out of the top of the door. On activation the actuator unit moves a rod attached to the rear of the latch door lock mechanism. This will allow the door to be opened and closed as necessary.

See more pictures of car gadgets. This method should work on most pin and tumbler locks that people normally use. But in more complicated systems that have several ways to lock and unlock the doors the body controller decides when to do the unlocking. When the actuator moves the latch up it connects the outside door handle to the opening mechanism.

Between the keypads keyless entry systems and conventional locks some cars today have four or five different ways to unlock the doors. A car door in this car the power door lock actuator is positioned below the latch. How the actuator works. To start with you need the right tools for the job.

Electric car door locks operate by receiving a radio signal transmitted by the car key fob signaling the actuator to activate which then routes the command through the correct path lock unlock and performs the desired action. By unlocking the car door using the internal latch or a key the visible latch will be in the up position and the car door locks release the door opening mechanism.