After 1993 liftmaster started using a rotating code with millions of possible programming combinations.
Garage door opened by neighbor.
If your neighbors garage door remote is opening your garage door the first thing to do is reset the codes using the dip switches or learn button.
Electric garage doors make our everyday lives easier.
There s a small chance a neighbor may be using the same garage door opener frequency or code.
Richards says it s rare but in some instances a door will open and close by itself because someone else has your code or frequency.
If this does not fix the situation then you may need to replace the garage door opener or the circuit board to get to a different frequency.
By sheer chance one of your neighbors may have a remote programmed with the same code.
The signal transmitted to open your garage door travels on a specific frequency and uses a specific code to program.
Because two different garage doors can accidentally be programmed to the same channel your neighbors may be causing your garage door to open on its own.
This is rare but it does occasionally happen.
It is quite easy to check just have your neighbor activate his or her garage door and see if your door begins to move.
When your neighbor uses their remote to open or close their door it may cause yours to open too.
Clean the button as well as the connections in the housing if this is the case.
In rare instances a nearby neighbor may have a garage door opener set to the same wireless code as your opener.
The button can easily get dirty and stuck in the pushed position.
This problem only occurs in older garage door openers that were programmed using positioning clips.
If you suspect your neighbor has an identical garage door opener frequency try changing your code or the frequency of your garage door opener.
Cb radios police radios a nearby radio station or radio tower can also make a garage door open and close on its own.
Just reprogram your garage door s openers and it should be back to working order.
If the frequency is the problem you re lucky you have an easy fix.