Back to all

Unlock the Secret (Malfunctioning Door Lock Actuator)

August 14, 2022

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!

Tuffy Naples
9401 Tamiami Trail N
Naples, Florida 34108
239-596-1668
https://www.tuffynaples.com

More articles from Tuffy Naples

Don?t Blow Your Cool (Water Pump Replacement)

January 11, 2026

Its always a good idea to keep your cool, and thats especially true when it comes to some components of your vehicle. One is the engine. Its hot under that hood thanks to the mini explosions that are occurring in the internal combustion engine when its running. Your vehicle has a cooling syste... More

Fears and Gears (Signs of Automatic Transmission Problems)

January 4, 2026

Automatic transmissions rule. The old days of shifting your own gears are a thing of the past for most drivers. But automatic transmission trouble can be a big inconvenience for any driver if it comes at the wrong time in the wrong place. Here are some signs to look out for that may mean you ar... More

For 4x4s (Maintenance of 4x4 Vehicles)

December 28, 2025

Some people love 4x4 vehicles, the true 4-wheel drive works of engineering like Jeeps and 4x4 pickups that allow you to seemingly go anywhere on the planet. You can climb up a 40-degree rock trail with some planning and skill (always careful to protect the environment, of course), or you can get ... More