How do you change the speedometer dial on your fiat ducato from mph to kph?

To change the speedometer dial from mph to kph on a Fiat Ducato, start by turning the ignition on without starting the engine. Next, press and hold the trip reset button on the dashboard for a few seconds until the display changes from mph to kph. Release the button, and the speedometer should now reflect kilometers per hour. If this method doesn't work, consult your vehicle's manual for specific instructions related to your model year.