Common Causes and Symptoms of a Faulty Trunk Lock Actuator

What is a Trunk Lock Actuator?

Most modern vehicles are equipped with trunk lock actuators that open the trunk when the driver presses the key fob or the release button. However, the trunk actuator can wear out over time, and it might leave you wondering, “why won’t my trunk open?”

A trunk lock works like your vehicle’s door latches. It has a claw-like assembly that protrudes from the trunk door. When the trunk is closed, the protruding part containing the latch hooks into a metal bar located at the bottom center of the trunk entrance. The trunk lock mechanism has a lever that needs to be pulled in order for the lock to release. Once the driver presses the key fob. to open their vehicle, the trunk lock actuator pulls the lever that releases the lock.

The trunk lock actuator and trunk latch mechanism are often combined in a single assembly. Some trunk latches have a motorized close function that is slightly more complicated and more prone to fail.

When the trunk is opened, the motorized latch striker extends, and when the trunk is closed gently, the latch striker pulls the trunk to the fully closed position.

Symptoms of a Bad Trunk Lock Actuator

A faulty trunk lock actuator might show the following symptoms:

• The trunk refuses to lock or close.
• Automatic trunk pull-down doesn’t work.
• The trunk won’t open with a traditional key.
• The trunk makes a clicking sound but doesn’t open when the key fob or electronic release button is pressed.
• The trunk refuses to open if opened with the key fob, but it opens when using the traditional key or switch located in the driver’s seat.
• False illumination of “trunk ajar” light.

These symptoms can be caused by a wide range of issues. The trunk lock actuator contains a small motor that moves a linkage when it receives an electronic signal. The linkage moves the latch to its open position and opens the trunk. Sometimes, the motor might still function, but the damaged mechanism that operates the latch prevents the trunk from opening.

A metal rod or cable connects the trunk latch actuator to the trunk’s key cylinder. If the trunk refuses to open using the key, then either the trunk lock cylinder or the metal rod could be the issue.

An unresponsive trunk lock actuator can also be caused by a faulty trunk lock relay. This component is an electronically controlled switch located in the vehicle’s fuse box that sends power to the trunk lock actuator when the driver uses the key fob or electronic release button. An unresponsive trunk lock actuator can also be caused by a flat battery.

While a broken trunk lock actuator doesn’t affect your vehicle’s drivability, it will prevent you from easily accessing the trunk. You should fix this issue so that it won’t be a hassle to store cargo.

How Much Does a Replacement Trunk Lock Actuator Cost?

A replacement trunk latch actuator costs around $10 to $480, depending on factors such as the part’s brand, design, and your vehicle’s make and model.

Where to a Get a Good Trunk Lock Actuator

A bad trunk lock actuator can keep you from closing or locking your trunk, increasing the risk of theft or lost cargo. Avoid all that hassle by replacing your malfunctioning trunk lock actuator with a new one from CarParts.com.

With just a few clicks, you can order a new trunk lock actuator here at CarParts.com. Ensure you’re browsing parts that fit your daily driver by entering its year, make, and model into our vehicle selector. Then, use our search filters to narrow down your options according to your preference. Our trunk lock actuator replacements are on hand, ready to ship, and available at different price points, so you’re sure to find one that fits your budget.

To guarantee their quality, we source our trunk lock actuators exclusively from the best brands in the industry. Check out your trunk lock actuator now, and we’ll deliver it straight to your doorsteps in just a few days. We have a 24/7 customer service team ready to assist you in case you have questions about your order.

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