I would suggest that you erase all of the code from the second opener and then reprogram it.
Program more than one remote control garage door craftsman.
This liftmaster 971lm one button visor security 390mhz garage door or gate opener remote control directly compatible with your sears craftsman 139 53680 or 139 53681 00953680000 or 009536810.
Just have a ladder and the remote you want to program.
To program a universal remote to open two garage doors start by using the remote s visor clip to press and release the recessed button.
Press and release the learn button on your first garage door opener motor unit.
The remote then transmits the code.
You can program each of the universal remote s three buttons to open a different garage door.
I bought two new remotes for the garage door from sears one or my car and one for my wife s car.
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These remotes have three positions allowing you to open as many as three doors from one remote.
It s pretty easy to do.
Sears craftsman red learn button visor garage remote control.
During this process the two door openers might get confused.
Push the learn button and then the button for your remote.
How to program extra or spare garage door opener remote diy universal garage door opener remote.
I have a sears craftsman garage door opener model no.