Car Door Actuators Part 1: What Are they and How Do they Work?

12 Oct Car Door Actuators Part 1: What Are they and How Do they Work?

It’s rare to find a car these days without an automatic locking device of one sort or another. And whether they operate with a keypad, a fob, or some other gadget, they all have one thing in common—the lock actuator.

You’ve probably never seen a door lock actuator because they’re buried inside your car door and are only accessible by removing the inside door panel. Here’s what one looks like for a Ford passenger car, but actuators are specific to vehicle makes and years, so yours may look different.

car door actuator image

Image Courtesy of Dorman Products, Inc.

Worn Out Actuators Need Replacing

Other than a dead battery in your key fob, a worn-out actuator is the most likely culprit if your power door locks don’t work.

Lock actuators use gears and pistons to raise and lower a rod connected to your door lock. The lock motor gets its power from your car battery, so it won’t work if your battery’s dead.

When you press a button on your key fob or key in a code on your door, a signal is sent to the actuator to open or close the lock. The actuator also has a clutch that disengages from the gears so you can lock or unlock the door manually from inside the car or with a key from the outside.  This means that a failed lock actuator is more of a nuisance than an emergency, but sooner or later, you’re going to want have it replaced.

Solve the Problem

When it’s time for a new door lock actuator, call Alexius Security Lock & Key, Denver’s Hometown Locksmiths at 303.974.0215, or use our online contact form for prompt, professional attention to all your security needs.

We have the knowledge and equipment to solve your lock actuator problems. Our mobile locksmith service answers every call 24/7 and responds promptly, arriving with the tools and know-how to get you going.

Our business is bonded and insured and our products and services are guaranteed. All of our services come with an upfront, honest price quote before the work is done, which is why we’ve received a Better Business Bureau Gold Star certification five years in a row and are part of Angie’s List and the Tom Martino Troubleshooter Network.

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