The problem is the electrics gremlin which is built into every Renault, they came strike at any time and are sometime hard to locate and remove/repair. Unfortunately, you own one of the most unreliable cars made. If you do a search by typing in Renault into the search box, you will see pages and pages of Renault problems. Best thing to do is get rid of it.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.