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

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My Craftsman garage door opener opens my gargage door and the neighbors. It's a newer unit (model 139.53985dm). What is the key to getting it to work only on my garage?

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  • Don Maggard Oct 01, 2010

    Is the neighbors opener also a Craftsman and is it new or old? Did your opener open his from the beginning or did this start happening? Have you seen your remote open his door? This is very unusual.

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Try programming your opener per the owners manual.

Posted on Oct 03, 2010

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I posted the following answer to a similar question posed by 'dodgeya' the other day.
I'm not sure how to direct you to that thread, so am re-copying my suggestion here...

>> 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.
<<

Jan 05, 2008 | Sears Craftsman LiftMaster Chamberlain...

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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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