Things You'll Need
Instructions
Press the "PS" button on your PS3 to pair it with your gaming console and assign it a controller number.
Make sure your controller is fully charged if the L1 and L2 buttons are still not working. The controller itself will not function if the battery is dead. If the battery is indeed dead, connect your controller to your system using the USB cable and leave it until it is fully charged.
Press and hold the "Reset" button for a few seconds, and then release, using a pointed object such as a pen, if your controller is still not functioning properly. Your controller has been reset.
Contact Sony support for additional troubleshooting if your controller is still not functioning properly (see Resources). You may need to send it in for repairs or purchase a replacement.