Some times keypads will not rememeber their code if the battery is removed or dead for If your garage door opener has a learn button, press that momentarily and release, then type your code into your keypad, press and hold the enter button for a second and that should store your code back into the keypad. If this does not work please feel free to give us a call at 972-681-2222 and we will walk you through it or have one of our technicians come out to you no matter where you are in Dallas!