Mine lit up about a month ago and i finally got it sorted yesterday. This light (orange, engine shaped located bottom right of the dash display) can mean any number of things but on the Clio is generally a sign that the O2 sensor has gone phut. (do a search on any forum and you will find dozens that have failed) This will cost you about £87 +vat and £50 labour, i know this as i was rooked out of £160 by Crossroads Kidlington even though my car is still under warranty because my Orbisoud is non standard.