Controller purple light and not working

Purple lights on a Meta Quest 3 controller, or a flashing purple and white light, usually indicate a problem with the controller's connection or a potential issue with the device. It could mean the controller is in a specific mode like sideload update or factory reset mode, or it could be a sign of a more serious issue like a bricked controller after an update. Troubleshooting steps include checking battery levels, rebooting the headset and controllers, re-pairing the controllers, and potentially resetting the guardian system. 
Here's a more detailed breakdown:
Possible Meanings of Purple Lights:
Sideload Update or Factory Reset:
A solid purple light can indicate the controller is in a mode waiting for a sideloaded update or is performing a factory reset. 
No Command Error:
The purple light might indicate the controller is waiting for a command over USB, possibly due to a sideload update attempt or other error. 
Tracking Issues/Bricked Controller:
Flashing purple and white lights, or just purple, can be a symptom of a tracking problem, or potentially a sign that the controller is bricked after an update, especially if the issue arose after an automatic update. 
Controller Firmware Issues:
The purple light could be related to firmware issues or a failure during a firmware update. 
Connection Problems:
Purple lights can indicate a bad Bluetooth connection or other communication problems between the controller and the headset. 
Troubleshooting Steps:
Check Battery: Ensure the controller batteries are fresh and properly installed. 
Reboot the Headset: Restarting the Meta Quest 3 headset can sometimes resolve connection issues. 
Re-pair the Controllers: In the headset's settings, navigate to Devices > Controllers and choose to re-pair the controllers. 
Check for Updates: Make sure the headset and controllers are running the latest firmware. 
Reset the Guardian System: If tracking is off, reset your play area in the guardian settings. 
Factory Reset: If other steps fail, you may need to perform a factory reset. This can be done through the headset's settings or by holding the power and volume buttons. 
Contact Support: If the issue persists, especially if the controller is unresponsive or shows a flashing purple and white light after an update, contact Meta Quest support for assistance. 
Additional Notes:
Purple lights on the headset itself can also indicate different states, such as a factory reset in progress. 
The tracking LEDs on the controllers are infrared and not normally visible to the naked eye. 
Some users have reported that slight corrosion on the battery terminals can cause connection issues and purple lights.