Originally Posted by Damemorder
Umm.... The switch grounds into the same place the HUD does... Do your have problems changing the brightness of your HUD?
I'm thinking that if the Km/H selection is the only thing that'* not working, it might be just a glopped-up switch. It'* a push-in/push-out switch, and if it'* hardly ever used, its mechanism can get a little gunked up.
If I remember right, it should make an audible click each time you press it, and as I said above, it should be a pop-in, pop-out movement; i.e. selecting Metric should leave the button in; pressing again for MpH should pop it out, or maybe vice-versa. I'll check mine tonight to be sure. I already looked at the PDF version of the owner'* manual here, but they don't get into that much detail about it.