With the ignition , press and hold the trip reset button (or the left button near the display).
The 1.4 Fire petrol engine uses a timing chain (less maintenance); the 1.3 MultiJet diesel uses a belt. If you see a "Timing Belt Due" message, do not try to clear it with a standard oil reset. You must replace the belt first; then a professional scan tool is required to reset the "Maintenance Timer." fiat fiorino reset service