I have a Craftsman Garage door opener with an external keypad.
Suddenly the external keypad does not work. I have replaced several batteries and that does not seem to work.
How do I reprogram or make this functional again?
There's usually a button on the opener you need to press in order to program the keypad. (Get out your ladder and take a look.) Try pressing that button and then entering the new code on the keypad.
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