Unlock the Secret (Malfunctioning Door Lock Actuator)
August 2, 2020
What a convenience power door locks are on a vehicle. The latest don't even require you to push the button on the key fob; all you have to do is have it with you. But sometimes there's a component of power door locks that can fail, especially when they are used several times each day. Those are called the door lock actuators.
The actuator is an electric part that works with others (like motors and gears) to lock and unlock doors. You can hear them work, sometimes with the little whirr of the gear or the quiet clunk of the lock finishing its cycle. And it's good to pay attention to that sound because if it starts to sound different, it could be a signal that your lock is on the brink of failing. Another sign of a failing power door lock actuator is they start working intermittently or quickly and erratically. The driver's door is often the first to start acting up since it's the one that usually gets the most use.
When you start to notice these signs, consider a visit to your service facility to get your vehicle checked out. If you wait too long, you may find yourself getting locked out of your vehicle. Many vehicles do have mechanical keys available as a failsafe so you are at least able to get inside. Some of them are hidden inside the key fob and you should know how to access them. Check with your owner's manual or ask your service advisor.
It's extremely inconvenient to have to unlock your vehicle with the mechanical key, then get inside and unlock the other doors. It's even more inconvenient if you have passengers in the rear seats. And that doesn't even count having to go through the same thing to lock the doors when you arrive at your destination.
There are many things that can cause power door locks to malfunction, but if it turns out to be a power lock actuator, the most common remedy is to replace it. Some are easier for technicians to reach than others, depending on your vehicle's design. But once your locks are working again, you might think you've found the "key" to happiness!
Sterling Tire & Auto
34701 Van Dyke Rd
Sterling Heights, Michigan 48312
586-264-7775
Need Service?
More articles from Sterling Tire & Auto

Tread Carefully: What Normal Tire Wear Looks Like
July 26, 2026
Every day we get in our vehicle and drive, we are putting wear and tear on our tires. Some wear is, of course, normal, but its important to know whats NOT normal. Not only can that alert you to potential safety issues, I can also save you money and fuel. Your tires tread (the part that contacts t... More

Can This Tire Be Saved? A Guide to Tire Repair vs. Replacement
July 19, 2026
When something goes wrong with one of your tires, one of the first things that goes through your head is: Do I have to buy a new tire, or is it possible to save this one with a repair? Understanding when you can have a tire fixed and when you need it replaced can prevent you from driving an unsaf... More

Battery Replacement at Sterling Tire & Auto in Sterling Heights
July 12, 2026
Hello, welcome to Sterling Tire & Auto. Today's focus is batteries. It seems like everything in Sterling Heights runs on batteries. Of course, the batteries we're most concerned with here at Sterling Tire & Auto are those in our customer's vehicles. Just like the batteries in our smoke detector... More
