Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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My neighbors garage door opener opens my garage door. How do I fix this.

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Look at the LED light next to the SMART/LEARN button on rear of the motor unit. You may need to remove a light lens cover in order to see it. If the light is flashing rapidly this means you have a stuck button on one of your remote controls. Take the batteries out of each remote control. When you remove the batteries from the bad remote, the light will stop flashing. This remote needs to be replaced.


If one of your neighbors remote controls is inadvertently programmed into your receiver, you door will open when their remote is activated. If this happens you will need to clear out your receiver and reprogram your remote controls. Press and hold the smart/learn button for 6 seconds or until you see the small LED light near the button turn itself off. If the above steps have been followed and the symptoms continue, there may be an electronic short in either the wall control button or the receiver logic board. In this case, remove the wall control wires from terminals 1 and 2 on the motor unit. Should the symptoms persist after the wires are removed, replace the receiver logic board. If the symptoms stop with the wall control wires removed from the motor unit, replace the wall control button, and the wires leading to the wall control button.


Posted on Jul 22, 2010

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Http://ep.yimg.com/ca/I/aaaremotes_2267_32384343
the link above is the manual to show how to change your 4 digit pass code

Posted on Jan 13, 2016

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1 Answer

Garage door opener.model 139.3043


Chances are pretty good if you simply replace your old garage door system with a new one, you would not be entitled to any compensation.

If you want peace with your neighbors, just replace the old system and call it good.

If you can't replace it right now, or you really want the neighbor to take responsibility, then I would recommend that you send a letter to the neighbor that outlines the problem very specifically and inform them that they cannot continue to open your garage door and leave it it open because you are concerned about the pipes freezing and about intruders breaking in. Remind them that this problem did not exist until they installed their system and you would really appreciate their assistance in getting this problem resolved.

You do not have a cause of action against the company that installed their garage door system because you didn't have any type of contract with them. You do potentially have a cause of action against the neighbor. Have you considered having an independent garage door installer come out and assess the situation? Just because the tech from the original installation company was clueless doesn't mean another company wouldn't be able to fix this.

Jan 17, 2014 | managemylife.com

1 Answer

I live in a 4-unit condo building constructed in 2008. Recently, after I trained/programed a garage door opener incorporated in a new car I purchased, I discovered that my garage door started to be...


I would recommend this. I'm not sure this will work, but I think it will.
Try starting from scratch. Reprogram the unit to the car again, I think the codes change each time it is done. If not, it's not too difficult to try.

Jan 01, 2011 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Universal garage door remote


I have a feeling your neighbor operated their door opener when you were programming your new clicker. Try erasing the memory of your opener and then program the clicker again making sure your neighbors do not operate theirs at the same time. To erase the memory hold the smart/learn button in for 10 seconds.

Jul 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opened by neighbor


Have you seen the neighbor open your door? The reason I ask is because it is almost impossible. The most common cause of a door opening by itself is a bad wall control or the wiring leading to it. You can temporarily eliminate both possibilities by removing the wire from terminal 1 at the rear of the motor unit. Do this and ask your neighbor to bring over his remote and try it on your opener.

Jun 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Craftsman (older model)


Do you have the option to change the electronic codes on your garage door opener system? My father-in-law had the same problem a number of years ago. He had not reset the code (equivalent to the combination on a lock) from the equivalent of 0-0-0 (which his unit shipped with). Turned out that a neighbor (or neighbour - in Canada) had the same /similar unit and when the neighbor opened 'his' door, my father-in-law's door would also open. You don't have to see the person drive by - it can be the neighbors behind you as well. You may find a solution by determining if you can change the original electronic code to a different one of your own choosing.
Hope this helps.

Dec 17, 2007 | Sears Craftsman LiftMaster Chamberlain...

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