How to Repair Door Lock Actuator Failures?

If your door lock actuator is failing to open, you’ve come to the right place. There are several common causes of failure, including rust and plastic rot. Here are some simple steps to take. But if you’re unsure of what to do, call a professional. You may not be able to fix the problem yourself, so you’ll probably need the help of a mechanic. 

(Looking for Missoula locksmiths? Contact us today!)


Rust on door lock actuators is a common problem that can ruin the functioning of a door lock. Luckily, there are several ways to remove rust from door lock actuators. One of the easiest ways is to use WD-40. This lubricating oil is available at any hardware or grocery store. It can be easily applied to the lock by spraying it into the keyhole. You will find this method much easier than using a brush and paper. 

You can easily replace the door lock actuator yourself, but you must make sure not to damage the door panel during the process. Before you do the replacement, you must remove the door panel and check the lock system assembly. 

Plastic rot 

You may be experiencing plastic rot on your door lock actuator. These parts are located on virtually every type of door. They are also susceptible to corroding and breaking with age. To fix the problem, you should first check the mechanism itself. This is usually the only way to determine the exact cause of the rot. 

You can find a video on YouTube that shows you how to remove the door lock actuator. This video will guide you through the process step-by-step. 

Plastic rot in door-lock assemblies 

Door-lock actuators can be damaged by plastic rot. The plastic inside the actuators can break down due to UV exposure and extreme temperatures. If the plastic breaks, the entire cable can move and the latch can be easily pulled. This condition typically occurs in older vehicles, particularly Fords. 

To repair a rotten door-lock actuator, start by unscrewing two of the bolts holding the door-lock actuator. You’ll see a purple plastic piece on top. Push up on this piece with a flathead screwdriver and it will slide off. 

Failure of a door lock actuator 

A door lock actuator is a small, electrical device that controls a door’s locking mechanism. It is connected to the primary power output through wires, and when these wires are damaged, the actuator will not work. Another common cause of a door lock actuator’s failure is corrosion. Moisture can enter the actuator, and it can react with oil, dust, and debris to form rust. The rust can weaken the mechanical links in the actuator, and this will lead to its failure. 

Failure of a door lock actuator can be a symptom of a more severe problem, such as a malfunctioning power door lock. It is common for power door locks to lock and unlock intermittently. In such a case, the only way to solve the problem is to replace the entire latch assembly. Even though some newer vehicles use integrated parts that are more costly, domestic automobile actuators are reasonably priced. 

Symptoms of a broken door lock actuator 

If your door lock actuator isn’t working properly, it could be a sign of a more serious issue. Door lock actuators are not typically broken overnight, but instead wear out over time. When this happens, the door will lock or unlock on its own, or make weird noises. In most cases, a broken actuator is the result of bad wiring, which can develop over time. If this is the case, you’ll have to identify the problem and replace the wiring. 

A broken door lock actuator is relatively simple to replace. If it’s not too damaged, you can perform a do-it-yourself repair. To do this, you’ll need to take the door panel off without damaging it. From there, you’ll need to inspect the lock system assembly to determine what’s wrong.