How do you Reset mpg on bora?

There is a button on the underside of the windscreen wiper stalk pointing towards the floor. It is towards the steering column about 1-2 inches 3-5 cm in length. Press and hold the button to reset. If the fascia driving display panel has a 1 it will reset mpg, distance, average mph for that trip only. If it has 2 it will clear the same aggregated data from the last reset.