LG Subwoofer Not Connecting to Soundbar (This Fix Worked!) • TechRT

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LG Electronics, a multi-billion dollar South Korean corporation, is renowned for its top-of-the-line products and meticulous quality control. Unfortunately, even LG’s most advanced sound systems can experience technical issues from time to time. One common problem encountered by users is when their LG Subwoofer fails to connect to the soundbar.

In this guide, we’ll discuss detailed steps to fix LG Subwoofer Not Connecting to Soundbar.

Fix LG Subwoofer Not Connecting to Soundbar

To fix issues with an LG soundbar not connecting to subwoofer, first, check all physical connections to ensure they are securely connected and functioning properly. Other potential solutions include updating firmware, conducting speaker tests, and reducing the range of the soundbar and subwoofer. Ensure any nearby devices that could interfere with the signal transmission have been deactivated or distanced from your soundbar/subwoofer.

What Do Lights Indicate?

If the LED indicator on your LG subwoofer is flashing red, green, or any other color, then it could be indicating something. Following are a few indications along with solutions:


If the green light on your LG Subwoofer is flickering, this indicates that the LG Subwoofer and LG Soundbar are no longer connected or that the connection is broken. Additionally, you’ll hear that the LG subwoofer is silent. If this is the case, a few simple troubleshooting techniques will help identify the root of the issue so you can solve it right away.

Solution: If your LG subwoofer won’t turn on and the green light keeps blinking, turn down the volume until the Vol Min message appears. Then, for roughly three seconds, press and hold the Mute button on the LG Remote Control. The WL Reset notice will appear at that point; you can pair as usual after that.


If the red blinking light on your LG Subwoofer is present, the connection to the LG Subwoofer is not complete. Fortunately, you may restore a connection by taking a few simple actions to fix this problem.

Solution: Press Pair on the subwoofer and check to see whether you can see the green-yellow light on the subwoofer’s front-facing LED display. Press and hold the pairing button once more if this green-yellow light does not blink.

If this does not resolve the issue, try simultaneously pushing the Mute button on the remote and the Stop button on the LG Soundbar until you see the message “Remate” appear on the LCD display. Next, try pushing the LG Subwoofer’s pairing button once again. You should now notice a flashing yellow or blue light. Restart the LG Subwoofer and see whether it has finally been linked with the LG Soundbar.

How to Pair LG Subwoofer With Soundbar

Before we delve into the intricacies of how, when, and why things work, let’s first check to see if you simply need to pair your LG subwoofer with the soundbar. It could be that a straightforward connection is all it takes; after all, sometimes, not following the right instructions can lead to errors too! Here is how to pair the LG subwoofer with the soundbar:

  • To ensure that your devices are powered on and ready to be used, look for a green blinking light on the LG subwoofer when it is turned on.
Look For A Green Blinking Light
  • When the light stops blinking and becomes solid green, then you know that the connection is made!
  • If the light is still blinking after a few minutes, move on to the next steps.
  • Reduce the volume of your soundbar and wait until you see an LED behind it illuminating red while also flashing.
Reduce Soundbar Volume
  • For three seconds, hold down the “Mute” button on your remote control until the LED indicator light starts flashing.
Hold Remote Button On Remote
  • To pair your subwoofer with another device, locate and press the pairing button for around five seconds.
Press Pairing Button
  • You’ll notice that the LED indicator will start to flicker between red and green at this point.
  • Disconnect both devices briefly before attempting to reconnect them again.
Power On The Woofer

Now power on the devices.

  • Wait until the LED on the soundbar turns a solid green, which indicates that it has successfully paired with your devices.

This process should solve the problem unless you have any hardware or software issues going on that needs to be addressed.

Why Is Subwoofer Not Connecting to Soundbar?

Now coming to the question, ‘Why is LG Subwoofer Not Connecting to Soundbar?‘ Trying to enjoy the crisp sound quality of your brand-new soundbar can be immensely frustrating when it won’t connect with its subwoofer.

In most cases, this issue is due to the soundbar not recognizing the subwoofer. The most common causes can range from a faulty power cable connection to an outdated firmware version, to name a few. Listed below are a few of the most common reasons why an LG Subwoofer Not Connecting to the Soundbar:

Hardware Issue

Hardware issues are generally the most common cause of connection issues and are comparatively easy to detect and fix. This can include faulty wiring, poor power connection, or incompatible cables.

1. Long-Term Usage

Just as you tend to your physical health, taking care of your digital devices is equally essential. Subwoofers, just like any other electronic device, are susceptible to failure over time due to wear and tear. In addition, many of the cheaper subwoofers on the market contain low-grade materials, which can reduce their lifespan even further; these subs may break down in as little as a few years if they are used heavily.

2. Overheating

Similar to long-term use, continued exposure to high temperatures can also cause subwoofers to break down. This is especially true if your soundbar and subwoofer are located in a cramped, poorly ventilated-space.

Overheating can cause the parts to malfunction or even melt, leading to permanent damage. Place the sub in a well-ventilated area and stop extended use from time to time.

3. Faulty Power Cable Connections

Another common issue when it comes to connecting a subwoofer to a soundbar is faulty power cable connections. If both components are powered on but fail to detect each other, check all cables and ports for any loose or corroded connections. Disconnecting and reconnecting the power cable should solve this issue.

Shortage of power is a common issue as well. For instance, the functionality of the sub can be readily changed, making it malfunction if the amperage reaching the electromagnetic coil is too low.

4. Short Circuit or Blown Fuse

The sub won’t make any sound and won’t effectively pair with other devices if there is no signal sent or no flow of power at all. This issue usually occurs due to the sudden surge in electricity that can lead to a short circuit and blow out your subwoofer’s fuse. If this is the case, you will need to replace the fuse or contact an expert for help.

5. Power Cycle Your Devices

If checking the cables didn’t do the trick, the next step is to power cycle all of your devices (subwoofer and soundbar). To do this, unplug each device from its power source and wait 10-20 seconds before plugging them back in again. After powering them back on, retest to see if the issue has been resolved.

Software Issues

Unlike hardware issues, software problems can be a bit trickier to detect and fix. These include but aren’t limited to outdated drivers, firmware versions, and more.

1. Firmware Issue

Sometimes, outdated firmware is the root cause of a subwoofer not connecting to a soundbar. If all physical connections are in order but your soundbar still fails to detect the subwoofer, then you may be dealing with a firmware issue. Updating the firmware of both components should resolve this problem.

2. Sound Problem

There are times when a subwoofer won’t connect to a soundbar simply because the sound isn’t able to travel between them. You can access speaker tests if your soundbar is a model from 2020 or later.

To begin the test, locate the button on the large circular control panel in the remote’s center. Push and hold it for more than ten seconds.

3. Soundbar and Subwoofer Range

The sound range can be another factor preventing your soundbar and subwoofer from connecting. Two devices should generally be positioned at a maximum wireless range of 33 feet. There may be connection interference if the standard range is exceeded.

A barrier between the soundbar and the subwoofer could also prevent a connection. Additionally, if a nearby device is using the same wireless frequency as the soundbar, the soundbar won’t connect to your subwoofer.

Troubleshooting Instructions to Keep in Mind

The right way to fix LG Subwoofer Not Connecting to Soundbar for a software problem is to troubleshoot it. Look into the following options if attempting to manually connect your soundbar and subwoofer is not working out for you:

  • For the best audio quality and easy connection, ensure your LG soundbar and subwoofer are located as close together as possible.
  • Look for any potential impediments that could be disrupting signal transmission between the two devices; anything obstructing it may hinder connectivity.
  • Make sure to deactivate any gadgets in close proximity which operate on a similar frequency – this can include microwave ovens, medical machines, and even wireless LAN connections.
  • Try turning the volume down. For some reason, it’s easier for your subwoofer to connect to your soundbar with the soundbar’s volume turned down. 
  • If none of these solutions resolve the issue, try unplugging your LG soundbar and subwoofer for a minimum of five minutes. After that time has passed, plug both items back in – this strategy often rectifies the problem.

Frequently Asked Questions

Frequently Asked Questions

Why Won’t My LG Subwoofer Connect to My Soundbar?

There could be a variety of reasons why your LG subwoofer won’t connect to your soundbar. Some factors to consider are physical connections, firmware updates, speaker tests, and the range between the soundbar and subwoofer. Additionally, look for any nearby devices that could interfere with signal transmission or hamper connection.

How Do I Reset My LG Bluetooth Subwoofer?

To reset your LG Bluetooth subwoofer, find the Bluetooth and input buttons on your LG soundbar. For ten seconds, press and hold them simultaneously. Once released, you should be able to return your LG soundbar to the default settings.

Summing Up

If you’re having trouble connecting your LG soundbar and subwoofer, the tips discussed in this article should help you get both devices up and running again. From checking cables for any loose connections to power cycling all of your devices to ensuring there aren’t any obstacles that could be obstructing signal transmission, these steps can help get your audio system back to its optimal state. As always, make sure to consult your soundbar’s documentation for troubleshooting options specifically tailored to the unit you have. Good luck!

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