What is the function of the sun visor buttons?

Hi,

If you are referring to the three buttons as seen in the attached pic, those are garage door transmitters. They can be programed to open the garage door and other things.

Take a look through your owner's manual and look up garage door transmitters for directions. Also, you will need to read the directions on the opener itself to see what is required for it.

I hope this helps. Let me know if you have other questions.

Take care,

Joe

See pic below