lg subwoofer not connecting to soundbar

Wondering why the LG Subwoofer not connecting to Soundbar. Keep reading!

LG Subwoofer + Soundbar are very efficient because of the multiple ways to connect both devices.

You can use wireless or wired connections, based on your environment. When both devices can’t connect to each other, we need to inspect ALL possibilities!

The LG Subwoofer won’t connect to the LG Soundbar via Bluetooth when the devices are too far away, or the Soundar is not in “Pairing Mode”. When a wired connection is used, but the parties are not connecting, the cable is either loose or faulty!

Let’s next check and review both connection methods and what could go wrong.

LG Soundbar With Subwoofer Not Working – Why?

why lg subwoofer not connecting

To answer the question of why both devices won’t connect, we need to inspect the obvious factors first.

For the connection to be established, read the corresponding information below!

Wireless Connection

The wireless (Bluetooth) connection between the LG Soundbar and the Subwoofer is the only wireless way to connect both devices.

The devices won’t connect because the LG Subwoofer can’t discover your Soundbar.

Press the Function button on the LG Soundbar to enable Pairing Mode (BT-Ready).

Wired Connection

With the wired LG Subwoofer to Soundbar connection, much more things can go wrong:

  • Faulty HDMI, AUX, or Optical Cable
  • Worn-out cable Entry Ports
  • The soundbar is already paired
  • Obstructed device Inputs

If everything appears normal in your setup, proceed with the solution guide!

How To Fix LG Subwoofer Not Connecting To Soundbar?

how fix lg subwoofer n ot connecting

LG Subwoofer won’t connect to Soundbar because it cannot find the Soundbar signals for pairing.

This will be our primary target throughout the guide so let’s jump right in!

Solution #1 Reset LG Subwoofer & Soundbar 

As your LG Subwoofer and LG Soundbar are not connecting, our first step should be the forehead way and force-reset both devices.

We will take this method one step further and perform a power cycle that will reboot ALL services.

Here is how to power cycle the Soundbar and LG Subwoofer:

  1. Turn OFF both devices!
  2. Unplug the devices from the power.
  3. Wait for at least 60 seconds.
  4. Plug both units back into the power source.

After the restart, the LG Subwoofer’s LED light should be blinking green, and after about 30 seconds, the light should turn solid.

This indicates a successful Bluetooth connection. Hence, the problem should be solved.

Tip: Don’t forget to press the Function button on the LG Sound Bar!

Solution #2 Reconnect Audio Cables! (Wired)

reconnect your audio cable

When your LG Subwoofer is connected to the Soundbar via an audio cable, the problem might be in the wiring.

You could have AUX, HDMI, or Optical cable to connect both devices, and in such case, you can either reconnect or replace the cable.

  • Simply reconnect the audio cable between both devices!

If the LG Subwoofer is still not connecting, check whether the cable is damaged or use another connection.

Find suitable audio cables for your setup at the bottom of the guide!

Tip: According to the light on your LG Subwoofer check whether the connection is OK.

Solution #3 Reset Pairing Memory

reset the pairing memory

When the LG Subwoofer is still not connecting to the Soundbar, we can reset both devices’ pairing memory to start fresh.

We’ve made sure to describe the method as concisely as possible, so you can’t go wrong following the steps below.

Here is how to reset the pairing memory on LG Subwoofer To Soundbar:

  1. Turn on the LG Soundbar & Subwoofer.
  2. Hold the Volume down (-) button on the LG remote. 
  3. Wait until the red flashing light illuminates the Soundbar.
  4. Press the Unmute button of the Soundbar for 5 seconds
  5. Then you will see the red light start flashing continuously.
  6. Press the Pairing button at the Subwoofer’s back for about 5 seconds.
  7. A red and green light will start flashing at the Subwoofer alternatively.
  8. Unplug both devices from the power source.
  9. Wait for 60 seconds.
  10. Firstly plug back in the Subwoofer into a power outlet and then Soundbar.

As soon as the devices are turned on, they will attempt to connect to each other.

Keep checking the blinking green light on the back of your Subwoofer to see when the light turns solid.

When this happens, you can rest assured that both devices are finally connected.

Note: If the lights are red or still blinking in green, jump to the next method!

Solution #4 Update Soundbar Firmware 

update the firmware

Since the LG Soundbar is the heart of your audio system, we will need to upgrade the firmware before proceeding further.

When the Soundbar is experiencing OS issues, the LG Subwoofer won’t be able to connect. 

Here is how you can update LG Soundbar firmware easily:

  1. Open the LG Sound Bar app on your mobile.
  2. Tap the Menu icon of the app.
  3. Navigate to the app Settings. 
  4. Go to Version Info
  5. Click on the Update button!
  6. The OS upgrade will automatically start. 

As the update is complete, your Soundbar will restart with the new version installed.

When this happens, unplug both devices and plug them into the power after 60 seconds.

The LG Subwoofer will automatically connect to the Soundbar, and the green light should be solid.

Alert: Proceed only if your LG Soundbar is up to date!

Solution #5 Factory Reset LG Soundbar

factory reset lg subwoofer

Sometimes there is an error within the device or in its settings that we cannot find.

Consequently, if the devices aren’t connecting even after a memory reset and a Firmware update.

This means there is a problem with the operating system of the LG Soundbar. 

Solution: Factory Reset the LG Soundbar to restore functionality!

Here is how you can perform a Factory Reset to the LG Soundbar:

  1. Plug in the LG Soundbar to a power source.
  2. Press and hold the Sound Effect + Volume Down buttons.
  3. Hold both buttons for at least 20 seconds.
  4. Release the buttons when you see a flashing light of the Soundbar.
  5. The reset on the LG Soundbar will start automatically.
  6. The process is complete when your LG Soundbar restarts.
  7. Unplug both the LG Subwoofer and the Soundbar.
  8. Wait 60 seconds.
  9. Plug them into the power outlet.

When the factory reset is complete, and both devices are power cycled, they should connect to each other in less than 30 seconds.

If the green light continues blinking, relocate both devices closer to each other and try again.

In case that doesn’t help, we might need assistance!

What’s Next?

what should be next

When you’re seeking professional assistance, reach out to LG Customer Support to report your problem by calling or chatting with a representative.

To save as much time as possible, share what you’ve already attempted in this guide to speed things up.

Let’s recap what we’ve learned in this guide!

Quick Recap:

Thus,  when LG Soundbar and Subwoofer don’t connect, power cycle both devices and reset the pairing memory. If that doesn’t help, we need to manually pair both devices or clear any software errors by performing a Factory Reset on the LG Soundbar.

Final Thoughts:

Here we have learned why the LG Subwoofer not connecting to Soundbar and what the solution includes.

Now we know that identifying the issue is the first step and solving the problem comes next. We hope that we were able to help, and good luck!

Switching to Wired Audio Connection?

In case you’ve made up your mind and are switching to the wired connection between your LG Soundbar and Subwoofer, we have you covered.

Get a WARRKY Optical Audio Cable, and never worry about your Subwoofer getting disconnected from the Soundbar anymore.

Nicole B