How to reset service light indicator Opel Zafira P12. Reset service light indicator Opel Zafira P12. From years: 2011, 2012. This procedure works on Opel Zafira B from years 2005-2011. You can try this for Opel Zafira P12. With ignition OFF. Press and hold trip comuter reset. Turn ON the ignition. Still holding the trip […]