An icon reborn, the Fiat 500 mixes retro charm with a surprisingly modern electronics package for such a small car. After servicing it, the trip computer needs telling that the work is complete or the maintenance light will keep nagging. Typical resets include the oil service reset, clearing the service-due reminder, and a tyre-pressure reset on cars fitted with monitoring. Fiat changed the menu structure between the early 500, the facelifted version and later updates, so the steps are not universal. Use the list below to choose your 500’s generation and open instructions that match its dashboard exactly.