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Move the selector switch above the mirror control to the middle position first then try folding the mirror. Let me know if you have already tried this or if this don't work, but that is what the owners manual says to do.
That procedure was not for manually folding the mirrors though.
If that did not work try resetting the folding mirrors.
You can find that procedure on page 2-46 of the owners manual here,
To reset the power folding mirrors, fold and unfold them at least three times using the mirror controls. This will reset them to their normal detent position.
using the button or manually?
Do you still need help with this or not?