Symptoms of a Faulty or Faulty Trunk Lock Actuator

Common symptoms include that the trunk won't open even after clicking, the release buttons don't work, and the drive won't stop clicking.

The rapid growth of automotive technology in the mid-1980s spurred several improvements in safety, efficiency, and convenience for car owners in the US. One element that we often take for granted is the trunk lock actuator, an electronic device that does "trunk release" with the push of a button. The trunk lock actuator is an electric motor that can be remotely started using a key fob or activated by pressing a button inside the vehicle. Vehicles of different makes and models have specific designs and locations of this device, but they all have one thing in common - the possibility of device failure.

Every time you put things in the trunk, you want to know that they will be kept safe and sound. Trunk lock actuator ensures that this is a reality. Modern trunk locking mechanisms consist of a lock cylinder with a key and a trunk lock actuator in cars, which, when activated, provide unlocking of the trunk with force. The trunk lock actuator then releases the trunk lock so that the trunk can be opened. All this is done without the need to insert the key into the lock cylinder. The trunk lock actuator may work from time to time due to wiring problems, broken parts, and other reasons. This device is not usually repaired, as it is more efficient for a certified mechanic to simply replace it with a new drive.

Listed below are some common warning signs that there is a problem with the trunk lock actuator. If you notice these symptoms, contact your local ASE certified mechanic as soon as possible to have the trunk lock actuator replaced.

1. The trunk does not open even after the "click"

The tailgate lock actuator makes a distinct "clicking" sound when actuated. One of the main problems that can occur with this device is that the motor will work but the locking mechanism will not. The interlock mechanism consists of several components within the actuator; one of which is a lever system that manually moves the lock to the open position when the actuator is actuated. Sometimes the linkage may be damaged, or the electronic wire attached to the linkage may become disconnected. If you notice that the trunk lock won't open when you press the remote control or the button in your car's cab, contact your mechanic so they can determine what the problem is and fix it as soon as possible.

2. Unlock buttons not working properly

Another common signal that there is a problem with the trunk lock actuator is when you press the key fob button or the interior trunk release and nothing happens. This may indicate a problem with the electronics leading to the actuator, such as a shorted fuse or wire, or a problem with the vehicle's battery. Since there are many potential issues that can cause this problem, it is best to contact your local mechanic so they can properly diagnose and fix the problem as soon as possible.

3. Trunk drive does not stop "clicking"

The drive is an electrical device and therefore tends to receive constant power without tripping. This is often caused by a short circuit within a unit that is receiving power but is not sending a signal to the source to shut off the power. In this situation, you need to disconnect your vehicle's battery if possible, as this problem can damage other electrical systems. In any case, once you notice this issue, contact your local ASE certified mechanic so they can properly diagnose the issue and fix it for you.

4. Manual lock mechanism works fine

If you are trying to open the trunk with the key fob or switch in the car and it does not work, but the manual lock works fine, this is a clear signal that the trunk lock actuator is faulty. Repair is not possible at this point and you will have to contact a mechanic to have the trunk lock actuator replaced.

Any time you notice any of the above warning signs, it's a good idea to address the issue as soon as possible. While a broken trunk lock actuator is more of an inconvenience than a safety or drivability issue, it is still important to the overall operation of your vehicle.