How to erase a remote control code?

how can I erase the code stored in my garage door opener. my wife still uses her remote to access my house even though we are divorced and she no longer live here.How to erase a remote control code?
Snap off the cover and you will see a set of switches with numbers on them.


Pick a combination different than what is on them. They usually go from 0 to 9. (smaller controls have less numbers)


Set them to what you want. [Be sure your garage door is open before you start].


On the back of your door opener motor there is a plastic cover.


Under that cover is an identical set of numbered switches. Set them to the same combination. Do this while in the garage in case you miss a number.


Both the control and the door opener must have the same number. As long as both have the same setting, it will work. As long as the new combination is different than the ';strayed'; second opener then the second opener won't work unless the new code is guessed and set. A professional could find it in about 30 minutes (sitting in front of it and flipping the switches).How to erase a remote control code?
Try re-programing your remote, there should be a button on the opener, push the button and then push the button on your remote. I'm not sure if this will work, if not then there is probably nothing you can do except get a new opener.
call the manufaturer...