Kia Smart Trunk Not Working – Why & How To Fix!

Are you having trouble with your Kia Smart Trunk not working properly? Don’t worry – you’re not alone! In this article, we’ll cover why your Kia Smart Trunk isn’t working, and some quick fixes to get your trunk open again.

Whether you’re dealing with battery issues, the fob not being properly programmed, or the distance sensor not working, we’ll have you back on the road in no time. So, let’s get started and learn about the Kia Smart Trunk, why it isn’t working, and how you can fix it.

Kia Smart Trunk Not Working - Why & How To Fix!

What Is A Kia Smart Trunk?

The Kia Smart Trunk is a revolutionary automotive technology developed by the Korean car manufacturing company Kia. It is designed to make it easier for individuals to securely store, access, and transport items in their vehicles.

The Smart Trunk system utilizes sensors located around the vehicle’s exterior trunk area that will detect when an individual has objects stored in the trunk.

When the individual walks away with their item, they can simply wave their hand in front of the sensor and the trunk will automatically unlock and open, so they can take out what they need.

If someone needs to access something while they are parked but don’t want to open their door to do so, they can wave their hand over the sensor again and have full access without ever having to leave their seat.

The benefit of this smart technology is that it keeps users safe from potential theft or damage due to intruders trying to access your vehicle’s contents without permission.

Instead of needing physical keys or a remote entry device, users can just wave a hand in front of the sensor for quick and convenient access at any time needed – perfect for those who may frequently be carrying heavy packages or luggage into and out of vehicles.

The Kia Smart Trunk also offers further enhanced security features including two-way authorization (whereby users must confirm input as well as correct PINs) as well as up-to date software which helps protect against malicious attacks from cyber criminals.

Kia Smart Trunk Not Working – Why?

The Kia Smart Trunk is one of the most popular features in modern cars and SUVs, allowing drivers to open their trunk with a simple button or voice command.

Unfortunately, sometimes the Smart Trunk can stop working, leaving drivers frustrated and unable to access their cargo area. So, why isn’t your Kia Smart Trunk working? There are several potential reasons why this could be happening.

One possible cause of a non-functioning Smart Trunk is low battery power. If your vehicle’s battery doesn’t have enough juice, the electronic components necessary for your trunk’s automated operation will not activate properly.

Make sure that you keep an eye on your battery level and get it checked regularly, especially if you’re having trouble with your Smart Trunk.

Another reason for a malfunctioning Kia Smart Trunk could be due to interference from other electronics nearby or in the car itself. This interference can prevent the signal required for opening the trunk from being received by the system.

As such, try avoiding any electronic devices within two meters of where your key fob is located to reduce any interference and get your Smart Trunk back up and running again.

Thirdly, there might be some issues with either the wiring or connections related to the trunk itself that need attention before it will work properly again.

If all else fails, then contact an authorized service provider who can run diagnostics on the wires and connections associated with your car’s trunk lid assembly to resolve any possible faults that may be causing problems with its functionality.

Finally, you may need to reprogram or update both software versions for them to communicate correctly with each other and with device controllers inside and outside your vehicle cabin for successful activation of every component involved in operating a fully functional Kia Smart Trunk system correctly at all times – otherwise, even changing out electrical parts won’t help it work correctly if old code remains overriding newer lines each time new updates occur.

Battery Issues

A Kia Smart Trunk not working can be a hassle if you’re in need of carrying cargo or groceries. One common cause for the trunk malfunctioning is battery issues.

This can happen due to several factors, such as improper maintenance and use, weak battery connection, and corrosion of the terminals.

A poor battery connection may result in a lack of power going to the trunk button on your rear bumper, radio transmitter, hazard warning lights, smart cruise control system, key sensor, and the automatic trunk lid itself; thus leading to an ineffective Smart Trunk.

Poor maintenance habits may lead to energy draining from your car battery faster than necessary, which also causes a decrease in power going towards all relevant electronic components needed for your Smart Trunk system.

Corrosion on either the positive or negative terminal that connects with the car’s cable can prevent proper electric current flow throughout your vehicle’s systems and this will further reduce power output needed for optimum functionality of your Kia Smart Trunk System including sensors like Blind-Spot Collision-Avoidance Assist and other safety features.

To prevent any battery related issues from affecting your Kia Smart Trunk performance, it is highly recommended that you routinely inspect and clean both terminals and other connections regularly, so you can enjoy its benefits without any disruptions.

If you notice any signs that something peculiar is wrong with how long it takes for your vehicle to start after turning off its engine, then go ahead check the battery status right away.

This includes lowering sound experience when using audio devices within the cabin or difficulty opening/closing doors, along with decreased response time when attempting to unlock doors via remote control key fobs.

Kia Smart Trunk Not Working - Why & How To Fix!

Fob not programmed correctly

The Kia Smart Trunk system is a great convenience feature that many drivers have come to appreciate. However, it can be rendered useless if the owner’s Fob is not programmed correctly.

This can happen due to improper pairing between the Fob and vehicle, or when the battery in the Fob runs out of charge. When this happens, it becomes impossible for the driver to open their trunk using the rear bumper or trunk button on the Remote Keyless Entry System.

To ensure that your Kia Smart Trunk works correctly, you’ll need to reprogram your Fob as follows: First, press and hold down both lock and unlock buttons on your Fob for at least five seconds.

You should then hear a confirmation tone from within your car that signals that the pairing has been successful. If this does not work after several attempts, you may want to try replacing its battery before retrying again.

When paired successfully with a compatible Kia vehicle systems such as Rear Cross-Traffic Collision-Avoidance Assist, your Kia Smart Trunk will open automatically when you approach it with your fob in hand – no more reaching into pockets or bags while juggling grocery bags.

The convenience of having a keyless entry system cannot be understated – no more struggling with keys or trying to remember where you left them!

In short, make sure your vehicles are regularly updated with any new programming and always keep an eye on whether your Fob is working properly so as not to be inconvenienced by a non-functioning Kia Smart Trunk.

Distance Sensor Not Working

If you own a Kia with a smart trunk feature, you know how convenient it can be. Having your trunk automatically open when you approach your car can be a great time-saver. But when the distance sensor stops working, your trunk stays stubbornly closed.

If you find yourself in this situation, don’t panic. Here’s a step-by-step guide to understanding why your Kia smart trunk is not working and how to fix it.

The first step is to determine why your Kia smart trunk is not working. The most common cause of this problem is a faulty distance sensor.

The distance sensor is the device that detects when you’re close enough to your car for the trunk to open. If there is any dirt or debris on the sensor, it won’t be able to detect your presence.

The next step is to check the battery in your remote key fob. Low battery power can cause your Kia smart trunk to stop working. If your battery is low, it may be time to replace it.

If the battery on your remote is fine and your distance sensor is clean, the next step is to check the fuse box. If a fuse is blown, the trunk won’t open. Check the fuse box to make sure all the fuses are intact.

Quick Fixes For Kia Smart Trunk Problems

Are you having some trouble with your Kia Smart Trunk? It can be very frustrating when your car’s trunk is not working properly, especially when it’s supposed to be one of the most convenient features. Fortunately, there are several quick fixes you can try to get your Kia Smart Trunk working again.

The first step is to ensure the trunk release button on your car’s interior is activated. Sometimes, this button gets stuck due to dirt, dust, or debris. If the button is sticking, try to clean it off and make sure it’s functioning properly.

Another common issue is that the trunk latch is damaged or dirty. Try cleaning off the latch and applying a little bit of lubricant to make sure it’s working correctly. If your trunk still isn’t opening, check the wiring to make sure it’s not damaged. Loose or frayed wires can lead to a malfunction of the Kia Smart Trunk.

If the problem persists, it’s likely that the smart trunk control module is the culprit. This control module is responsible for opening and closing the trunk and can get damaged over time. To fix this, you’ll need to get a replacement module from your local Kia dealership.

Finally, the Kia Smart Trunk may not work if the fob is not properly synchronized with the car. To solve this, you’ll need to re-sync the fob. To do this, open the trunk manually and then press and hold the trunk release button for five seconds. The trunk should close and re-sync automatically.

Check the Battery

If your Kia smart trunk isn’t working, the first thing you should do is check the battery. Smart trunks use a small battery inside the vehicle to open and close the trunk automatically. If the battery is dead or low, it won’t be able to open or close the trunk.

To check the battery, open the trunk and locate the wire bundle near the back side of the trunk. The battery is typically located at the end of the wire bundle. It should be about the size of a deck of cards and will have two wires connected to it.

Once you’ve located the battery, use a multimeter or voltage meter to check the voltage. The voltage should read at least 12 volts. If it’s lower than 12 volts, the battery needs to be replaced.

If the battery is fine and the Kia smart trunk still isn’t working, there could be a few other causes. The trunk latch may have gotten stuck, or the wiring could have become damaged somehow. You could also have a faulty sensor or actuator.

Re-program the Fob

If you own a Kia, chances are you are all too familiar with the problems that come with the Kia Smart Trunk not working. You have all the convenience of the trunk opening automatically with the press of a button and then, all of a sudden, it stops working. It can be one of the most frustrating issues to deal with, especially when you’re in a hurry or trying to load heavy items into your trunk.

Fortunately, there is a solution – reprogramming your Kia Smart Trunk fob. This may seem like a daunting task, but with a few simple steps, you’re sure to get your Kia Smart Trunk back up and running again in no time. Here’s how you can do it.

First, make sure that your Kia Smart Trunk fob has a working battery. If not, replace it and then try pressing the trunk release button for fifteen seconds. This should reset the fob. If the trunk still isn’t opening, then it’s time to re-program the fob.

To do this, you’ll need to open the hood of your Kia and locate the port for the trunk release activation switch. It should be a small black port located near the right side of the battery. Then, take the fob and press the trunk release button for eight seconds. This will cause the car’s computer to recognize the fob and kickstart the programming process.

You’ll then have to wait for the car’s computer to complete the programming process. This could take anywhere from ten to thirty seconds. Once the process is complete, press the trunk release button on the fob again to test. If the trunk opens, you’re all set. If not, repeat the programming process. If you are still having trouble, it may be due to a faulty trunk release switch. If you suspect this to be the case, it’s best to take your Kia to a qualified mechanic to have the switch replaced.

Kia Smart Trunk Not Working - Why & How To Fix!

Clean the Distance Sensor

Is your Kia Smart Trunk not working? If your Kia car’s trunk is not opening automatically, the distance sensor could need some cleaning. Distance sensors are a crucial part of the Kia Smart Trunk system, and if they’re not functioning properly, then the trunk won’t open. Fortunately, cleaning the distance sensors is a relatively easy and straightforward process.

First, you’ll need to locate the sensors. If you have a Kia Optima Porte, the sensors are located behind the trunk below the bumper. On other Kia models, the sensors may be located in different spots. If you’re not sure where your sensors are located, the owner’s manual should provide some guidance.

Once you’ve located the sensors, you’re ready to start cleaning them. To get started, you’ll need a few supplies: rubbing alcohol, cotton swabs, a clean cloth, and some de-greasing cleaner. Start by spraying some rubbing alcohol onto a cotton swab and wiping down the sensors. Be sure to get into all the little nooks and crannies. You’ll want to keep cleaning until you’ve removed any dirt or debris that could be blocking the sensors.

Once the sensors are clean, use a clean cloth and the de-greasing cleaner to polish the sensors. This will help to prevent dirt and debris from building up on the sensors.

Finally, you’ll want to test the sensors to make sure they’re working properly. You can do this by standing in front of the car, pressing a button on your key fob, and seeing if the trunk opens. If it does, then you’re good to go. Cleaning the distance sensors is an easy way to get your Kia Smart Trunk working again.


Well, we have come to the end of this article, and hopefully, you have learned some useful information about your Kia Smart Trunk and how to fix it when it’s not working. We looked at what a Kia Smart Trunk is, why it might not be working, and some quick fixes for the most common problems.

We discussed battery issues, Fob programming, and the Distance Sensor. If you’ve tried all of the troubleshooting steps outlined in this article and your Kia Smart Trunk still isn’t working, contact your local Kia dealership for help.