Have a liftmaster garage door opener with a yellow learn button. tried to add a wireless keypad, but was sold the wrong one. since then, the garage goes up or or down with what appears to be other peoples garage door openers. I need to clear the codes and reprogram, but I have tried holding the learn button down for 6 seconds, 30 seconds, etc, but the led does not flash to indicate the codes are cleared, and the unit continues to open when other controllers are pushed. Don't know if there are different instructions for the yellow learn button controller, or if you have to jumper something. Help much appreciated.
You seem to be doing right thing, hold learn button for 10 seconds, this should clear out all coded items; keypads, remotes.
Make sure the battery is good and then locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this button and then walk over to the keypad and key in a 4 digit code and press enter.
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I'm having exactly the same issue. If I find out how to clear out the codes, I'll let you know.
I am having the same issue with mine, have you been able to reslove the problem?
I have the same problem. Thought I was going nuts! :o)
Has anyone resolved this issue I am having the same problem
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