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No idea but if I remember right it works like this
using your thumbs on the inside face gently pull the gauge bezel back toward you. Pull the pod gently then unplug the wire for the circuit board. There is not a lot of wire, and it's a pain to get to the plug but with patience you can do it. I don't recall there being any screws anywhere at all. It all snaps together. That's the best I can remember. It was early 2016 when I did it. If you're gentle you can't really hurt anything.