I don't know how the mirror glass comes out on your particular mode, but on many cars that I have replaced glass on you get a plastic kitchen utensil wrapped in a cloth, spoon, egg flipper, fish knife, put it behind the mirror and prise it off.
Some cars though have a small sliding switch that is located under the bottom edge of the mirror. Tilt the mirror up and look inside and you will see it, slide it to one side.
I would have thought someone, with your model would have been able to comment on it.