If you not actively use Bluetooth you should turn it off. Enable the Bluetooth Icon in the menu bar too, so you can always see, if you have turned it off.
How to fix it
macOS 13 - 14
- Go To “System Preferences” > “Control Center”
- For “Bluetooth” enable “Show in Menu bar”
macOS 10.11 – 12
- Go To “System Preferences” > “Bluetooth”
- Enable “Show Bluetooth in menu bar”

