I will show you how to fix the L3/sprint problem with your PS4 controller. Also an FYI at the very end of the video the reason I'm having such a problem reconnecting the light bar ribbon cable is the battery is basically dead as I haven't used that controller in months and it was dead lol. Have a Dirty PS4 Fan or is your PS4 running hot or loud ? This will help you. How to Clean your PS4 Fan.    • How To Clean PS4 Fan