My 2010 Elegance estate with bi xenons is pretty poor in the lighting department. The xenons do their little dance on start up, up, down, left and right. The cornering fogs work OK but throw of the dipped beam is poor. I can't see a bend in the unlit road some 20 yards ahead, unless of course main beams are on, luckily I know its there.  The bulbs are about 11 years old, could that be the problem or is it the levelling sensor I've been reading about despite the startup dance working ok, or