What is a door lock actuator?
A door lock actuator is the electronic component inside your vehicle’s door that allows you to lock and unlock it with the simple touch of a button. When you press your door’s lock or unlock switch, a signal will be sent to the actuator that will then engage or release the lock.
Without a properly functioning door lock actuator, you won’t be able to keep your car and your belongings inside secure. As long as the door locks themselves work, you could still lock them manually—but this can quickly become an inconvenience.
When should I replace the door lock actuator on my car?
Here are some of the most common symptoms that could mean your car’s door lock actuator isn’t working anymore:
Your power door locks don’t work: One of the most obvious signs of a failed door lock actuator is that your door’s power locks no longer work—especially if your power lock controls on your key fob or a different door still function properly.
Strange noises when locking or unlocking the vehicle: Watch out for strange new noises when you press your vehicle’s lock or unlock buttons. It may sound like the actuator motor or gears are straining harder when activated. You might also hear buzzing or rattling.
How often should a door lock actuator be replaced?
Routine car maintenance doesn’t usually include replacing your door lock actuator—you don’t need to replace it until it’s not working properly.
A door lock actuator may be able to last the life of your vehicle, but it’s not uncommon for them to fail prematurely. When an actuator fails, it’s often because of:
Exposure to excess moisture, dirt, or debris
Can I replace my door lock actuator myself?
Replacing a car’s power door lock actuator could potentially be a DIY project for those with moderate mechanical skills, but some may find this job too difficult to tackle alone. Since this replacement involves dealing with some of your vehicle’s electrical components, you’ll need to keep best safety practices in mind.
If you don’t feel comfortable replacing your door lock actuator yourself, a certified mechanic can take care of the job for you.