Its all done on the gauge.....
i wouldn't recommend using KM/H in the US but its your call:
1. Press the mode button till u are in the odometer setting
2. Press and hold the mode button while pressing the reset button and the display will shift in this sequence:
Km & *C ---> Mile & *F ---> Mile & *C ---> Km & *F ---> and back to Km & *C