Garage Door Opens On It’s Own

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  • Updated 2 weeks ago
My brand new Chamberlain Garage door opener is randomly opening on its own, at random times during the day, twice this morning. It’s been occurring now for a couple of months and is getting worse. I am also reading thousands of posts and others with the same issue. I want this fixed! What do I do?
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Robert Riedel

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  • Shocked and angry

Posted 2 weeks ago

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Gordon Kirkwood

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Hi Bob. I had the same thing. I first disconnected the wall button to ensure it’s not the problem as some have suggested was their problem. It still occurred. So then I wiped out all codes from the opener. I then had to get the garage opener to learn the new codes from all the openers that came with the unit as well as my Jeep. I’ve had no problems since.
It seems that the long range antenna can pick up a signal from many houses away. If you were trying to program an opener, if any of your neighbors try to open their garage door while the unit is searching for the code from the opener you are trying to program, it can grab their signal. Then, every time they use their opener, your door will open or close as well.
It’s been 3 weeks now and no more issues to date since I cleared the codes.
I recommend you program very early in the morning or late at night, and do it quickly to limit the possibility of someone using their opener while you are trying to program.

Good luck.
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Robert Riedel

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Thanks for the comment. The button sounds like a long shot -- it's just a switch in a box, but the rest actually sounds plausible. I'll give it a shot.
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Roger Owens

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Did you use staples to hold up the wire from the opener to the button? With changing temperatures, vibrations, etc. a near short can become a real short. It’s easy to drive a staple through the insulation shorting out the wires—that’s what the button does. Try disconnecting one or both button wires at the opener and see if the problem goes away. If it does, I’d bet either the wire is shorted somewhere along its length or the button is bad.
Did you change the batteries in the wireless remote-the one you mount outside next to the garage door? Sometimes remotes do funky things just as batteries start to go low..
(Edited)
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Roger Owens

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I'd also check the alignment of the door interference sensors. Their job is to open the door when they see an interruption of the infra-red light beam. If not perfectly aligned, they might falsely trigger and "reverse" the door to the open position.
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Robert Riedel

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When the door is down for hours, or early in the morning or late at night -- it opens by itself. That is not caused by light-beam interruption. The light beam is a safety feature that is only engaged when the door is descending. Once closed, it shouldn't be a factor.
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Roger Owens

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Technically, you are absolutely right, but engineers may not have predicted all failure combinations, like cold weather, bugs, flying bugs, spiders in combination with some other unexpected event. I’d still bet there’s a short in the wires to the wired button-most likely caused by a staple that is wiggled over time because of vibration. Or perhaps a garden tool, snow shovel, etc. has caused a short in the button wire. I. e., something local, not for everyone.