1. If you are programming it for the first time press and hold the two outer HomeLink buttons and release when the HomeLink button flashes after about 20 seconds. 2. Position the remote garage door opener 1-3 inches away from the HomeLink buttons (keep the flashing light in your view) 3. Simultaneously press the HomeLink button you want to open the garage door and the button on the remote garage door opener until the flashing light flashes rapidly.