How do I fix Bluetooth connection issue on my iMac?

Hi,

To fix Bluetooth connection issues on your iMac, start by restarting both your iMac and the Bluetooth device. If that doesn't work, try resetting the Bluetooth module, unpairing and re-pairing the device, or checking for wireless interference. You can also try updating your macOS and ensuring your device is in pairing mode. 

Here's a more detailed breakdown of troubleshooting steps:

1. Basic Troubleshooting:

• Restart your iMac: A simple restart can resolve many temporary glitches. 
• Restart the Bluetooth device: Turn the Bluetooth device off and then back on. 
• Toggle Bluetooth off and on: Go to System Settings > Bluetooth and turn it off, then back on. 

2. Resetting the Bluetooth Module:

• Option-Shift click the Bluetooth icon: Hold down the Option and Shift keys while clicking the Bluetooth icon in the menu bar.
• Select "Reset the Bluetooth module": From the Debug menu, choose "Reset the Bluetooth module".
• Restart your Mac: After resetting, restart your iMac. 

3. Unpairing and Re-pairing:

• Forget the device:
• Go to System Settings > Bluetooth, find the device, and click the "i" icon, then select "Forget This Device". 
• Re-pair the device:
• Put the Bluetooth device into pairing mode and follow the on-screen instructions to pair it again. 

4. Checking for Interference:

• Move devices: Ensure your iMac and Bluetooth devices are within a reasonable distance of each other and away from potential sources of interference like Wi-Fi routers or microwave ovens. 

5. Advanced Troubleshooting:

• Update macOS:
• Make sure your macOS is up to date, as updates often include Bluetooth improvements. 
• Reset SMC/PRAM:
• If the issue persists, you can try resetting the System Management Controller (SMC) and Parameter RAM (PRAM) to refresh hardware settings. 
• Delete PLIST files:
• In some cases, corrupted Bluetooth preference files (PLIST files) can cause issues. You can try deleting these files and restarting your Mac. 

6. Terminal Command:

• Open Terminal:
• You can use the Terminal to reset the Bluetooth module. Search for "Terminal" in Spotlight.
• Enter the command:
• Type sudo pkill bluetoothd and press Enter. You may need to enter your administrator password. 

If none of these steps work, it's recommended to contact Apple Support or a certified technician for further assistance. 

The following will require any USB keyboard and mouse. If you don’t have them, borrow or buy them, they are inexpensive!

1.     Connect the USB keyboard and mouse to the computer.

2.     Open System Preferences – Bluetooth

3.     Un-pair the wireless keyboard and mouse.

4.     Turn off Bluetooth

5.     Restart the computer in Safe Mode per the directions in Start up your Mac in safe mode - Apple Support

6.     Restart the computer normally.

7.     Open System Preferences – Bluetooth

8.     Turn on Bluetooth

9.     Re-Pair the wireless keyboard and mouse.

10.  Unplug the USB keyboard and mouse and begin testing the wireless devices again. 

If you haven't found a fix yet you might try relaunching the Finder via the  ➙ Force Quit menu option. If it works in re-establishing BlueTooth connection it'l be much faster than rebooting the entire Mac.

You should get an inexpensive wired mouse to have in this type of situation. If you have a rechargeable battery wireless keyboard you and use it as a wired keyboard by using its charging cable. Keep us posted on your efforts. 🤞