1. Prepare the Craftsman garage door opener. Make sure the door is closed and the opener is in "learn" mode. Consult the Craftsman garage door opener manual for instructions on how to put it in "learn" mode.
2. Press and hold the Lexus remote's "Program" button. This button is usually located on the side of the remote. Hold it down for at least 2 seconds, or until the LED light starts flashing.
3. Press the "Open" button on the Lexus remote. The LED light should flash rapidly, indicating that the remote is sending a signal.
4. Press and release the "Program" button on the Craftsman garage door opener. The LED light on the remote should turn solid, indicating that the remote has been successfully programmed.
5. Test the garage door opener. Press the "Open" button on the Lexus remote to make sure the garage door opens and closes properly.
If the garage door does not open or close properly, repeat steps 2-4 until it works. You may need to experiment with the timing of pressing the buttons to get it right.
