LG Subwoofer Not Connecting to Soundbar [Solved]

If you’ve recently purchased an LG soundbar and subwoofer combination, and are having trouble getting them to connect, you’re in the right place.

In this guide, we’ll walk you through some common issues that can cause the subwoofer to not connect to the soundbar, and provide some tips and tricks to help you get everything up and running smoothly. So if you’re ready to get your home theater setup up and running, let’s get started!

LG Subwoofer Not Connecting to Soundbar: 5 DIY Fixes

lg subwoofer not connecting to soundbar

1. Reset the LG Subwoofer and the Soundbar 

If you are experiencing issues with your LG Subwoofer and LG Soundbar not connecting, it may be necessary to reset both devices. One way to do this is to perform a power cycle, which involves turning off both devices, unplugging them from the power source, and waiting for at least 60 seconds before plugging them back in.

To begin the power cycle process, 

  • Turn off both the LG Subwoofer and the LG Soundbar. 
  • Once they are both off, unplug them from the power source. 
  • Wait at least 60 seconds before plugging them back in, as this allows enough time for all of the services to fully shut down.
  • Once you have waited the necessary amount of time, plug both the LG Subwoofer and the LG Soundbar back into the power source. 
  • The LG Subwoofer’s LED light should start blinking green, indicating that it is attempting to establish a Bluetooth connection. 
  • After about 30 seconds, the light should turn solid, indicating a successful connection.

If you continue to experience issues with your LG Subwoofer and LG Soundbar not connecting after performing a power cycle, it may be necessary to troubleshoot further.

2. Reconnect the Audio Cables

If the issue persists, it is possible that the problem lies in the audio cable connection. There are several different types of audio cables that you can use to connect your LG Subwoofer to your Soundbar, including AUX, HDMI, and Optical cables. If you have one of these types of cables connecting your devices and are experiencing issues, you may need to either reconnect or replace the cable.

To reconnect the audio cable, simply unplug it from both devices and plug it back in, ensuring that it is securely connected to both the Subwoofer and the Soundbar. 

If the subwoofer is still not connecting, it could be that the cable may be damaged and needs to be replaced. You can check for any visible damage to the cable, such as frayed wires or bent connectors, and consider purchasing a new cable if necessary.

If you do need to purchase a new audio cable, make sure that you choose a cable that is compatible with your specific setup. Different devices may require different types of cables, so be sure to refer to your user manual or consult with a professional to find the right cable for your needs. With the right audio cable and a proper connection, you should be able to get your LG Subwoofer and Soundbar working together seamlessly.

3. Reset Pairing Memory

If you are still having difficulty getting your LG Subwoofer to connect to your LG Soundbar, you may need to reset the pairing memory of both devices. This will erase any previous connection information and allow you to start fresh. Here is a step-by-step guide on how to reset the pairing memory of your LG Subwoofer and Soundbar:

  • Begin by turning on both the LG Soundbar and Subwoofer.
  • Pick up the LG remote and hold down the Volume down (-) button.
  • Wait until the red flashing light appears on the Soundbar.
  • Press the Unmute button on the Soundbar for 5 seconds. The red light should start flashing continuously.
  • Now, locate the Pairing button on the back of the Subwoofer. Press and hold this button for approximately 5 seconds.
  • The Subwoofer should now display a red and green light that flash alternately.
  • Unplug both the Soundbar and Subwoofer from their power sources.
  • Wait for 60 seconds before plugging the Subwoofer back in first, followed by the Soundbar.
  • Once both devices are turned on, they will attempt to establish a connection with each other. 
  • Keep an eye on the blinking green light on the back of the Subwoofer. When it turns solid, you can be sure that the Soundbar and Subwoofer are finally connected. 

4. Update Soundbar Firmware

Updating the firmware on your LG Soundbar is a relatively simple process that can be done through the LG Sound Bar app on your mobile device. However, it is important to make sure that you are using the latest version of the app and that your Soundbar is connected to the internet in order to ensure a smooth update process.

To begin, 

  • Open the LG Sound Bar app on your mobile device and tap on the Menu icon. 
  • From there, navigate to the app Settings and then to the Version Info section. Here, you should see a button labeled Update. 
  • Simply click on this button to start the firmware update process.
  • As the update begins, your Soundbar will automatically restart and install the new version of the firmware. 
  • Once this process is complete, unplug both the Soundbar and the LG Subwoofer, and then plug them back in after a 60-second waiting period. 
  • This will allow the Subwoofer to properly connect to the Soundbar and should result in a solid green light indicating a successful connection.

Note that updating the firmware on your Soundbar may take some time and may require multiple attempts. If you encounter any issues during the update process, consult the user manual for troubleshooting steps or to contact LG customer support for further assistance. By properly updating the firmware on your Soundbar, you can ensure that your audio system is running smoothly and efficiently.

5. Factory Reset the LG Soundbar

To factory reset your LG Soundbar, follow these steps:

  • Connect the LG Soundbar to a power source.
  • Press and hold the Sound Effect + Volume Down buttons for at least 20 seconds.
  • Release the buttons when you see a flashing light on the Soundbar.
  • The reset process will start automatically and complete when the Soundbar restarts.
  • Disconnect both the LG Subwoofer and the Soundbar from the power outlet.
  • Wait for 60 seconds before reconnecting them.
  • If the green light continues to blink, try moving both devices closer to each other and resetting them again.


  • Lawrence Munson

    I'm Lawrence Munson, a tech blogger and audio enthusiast. AudioJust.com is where I share my thoughts and findings on the latest audio gear such as earphones, soundbars, subwoofers, equalizers, etc. I love to test new products to help my readers understand and enjoy their devices better, and I'm always eager to share my knowledge about audio technology and how it works.