There is an abnormal beep sound, the touch sensor does not work, or the headphones restart on their own.

Follow these steps to troubleshoot this issue:

1. Using the Sony | Headphones Connect app, update the headphones to the latest version.
2. Update all music streaming apps to the latest version, and then restart the connected device.
   Note: Depending on the music streaming app, this issue can occur even when you are not playing music with the app.
3. Place the headphones into the charging case, close the lid, and then wear them again.
4. Reset the headphones.
5. Initialize the headphones.
   Note: You can see how to reset or initialize the headphones by the following:
   • How to reset or initialize the LinkBuds (WF-L900), LinkBuds UC
   • How to reset or initialize the LinkBuds S
   • How to reset or initialize the headset (WF-1000XM5)
   • How to reset or initialize the headset (WF-1000XM4)