Renault Laguna III - 2.0dCI Sport Tourer Owner's Review - Mike Hannon
The French equivalent of Halfords is called Norauto - there is also a chain called Feu Vert (Green Light). Manuals do exist for many motors, you need to look for the 'Haynes' equivalent, called Revue Technique. Norauto has a website so you might find the one you need listed on there.