Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. Symptoms of a Bad or Failing Door Lock Actuator

Symptoms of a Bad or Failing Door Lock Actuator

door lock actuator

Door lock actuators are an electronic component found on vehicles equipped with power door locks. They are the electronically controlled actuators in every single door that are responsible for locking and unlocking the power door locks when the switches are pressed. When they fail or have issues, they can disable the power door lock feature, which can be a major inconvenience to the driver. Usually a bad or failing power door lock actuator will produce a few symptoms that can notify the driver of an issue that should be serviced.

1. Unusual noises coming from inside the door

Unusual noises coming from inside the door are one of the first symptoms of a potential problem with a power door lock actuator. Most power door locks operate using gears or motors that may quietly whir, or make noise when they operate. Those noises are normal. However, if the noise suddenly becomes louder or more pronounced, then this may be an indicator that the gears or motor are becoming worn out. The noises may get louder until the actuators eventually fail.

2. Power door locks behave erratically

Another symptom of a potential problem with the power door lock actuators are door locks that behave erratically. If the actuators have any sort of internal or wiring issue, it may cause them to rapidly lock and unlock unexpectedly, or cause them to function intermittently.

3. Power door locks do not function

Another symptom of a potential problem with the door lock actuators are power door locks that do not function. If the door lock actuators fail, they will disable the power door lock feature from working. This will require the driver to use the key to lock or unlock the doors, and can disable the power door locks completely for vehicles that do not use a traditional key, such as newer luxury vehicles.

The power door lock actuators are a simple component, but are critical to the operation of the power door locks - which are among the most commonly used features of any vehicle. For this reason, if you suspect that one or more of your power door lock actuators may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic to determine if you need a door lock actuator replacement.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: Truck door not closing

Many times, if the door will not close or latch it is because of the latch assembly. Most of the time it is because the latch was moved while the door was open. You can check the latch and see...

Q: Don’t think my diesel motor is working right

In this case, the turbo boost actuator had the turbo stuck on maximum boost. When you got to higher engine speeds it caused the turbo to over boost, stressing the turbo. Continued use in this state caused the turbo to...

Q: Doors keep unlocking. Using both manual and auto-lock.

I would have a technician inspect your electrical system. It sounds like you may have some electrical problems. There could be a shorted wire where the wires go into the doors or you may have a bad lock sensor on...