There should be a way. As it’s done in controller. Do you have a trip odometer? Then you have a reset button. Hold it in for 15 seconds or so.
You can always just use the 1/2 setting.
Yeah, it does have a reset button. I looked in the actual owners manual and it does state mph/kph but doesn’t provide steps to switch them. I’ll try and hold it and see if that does it.