If your remote control has been lost or stolen, a person will have unabated access to your garage. You should erase all existing remote controls out of your receiver.
Press and hold the learn code button until the red LED stops blinking. This process will take approximately 10 seconds. This will render all remote controls and your optional external wireless keypad inoperative.
Press and release the learn code button on the receiver, while the red LED is blinking, press your transmitter button 3 times. This will lock in a new code and you will be able to use your remote controls normally. Repeat this process for each additional remote control you have.
To reprogram your existing Intellicode Wireless Keypad. Press and release the learn code button on the receiver, while the red LED is blinking, open the cover on your wireless keypad, press the same personal pin number that you originally programmed and press the SEND button 3 times. This will allow you to use your garage door opener keypad normally.