Hi- My brother in law recently bought a Citroen C5 and it has a quirk. When he indicates to make a turn, the headlights (low beam) flash. This is very dangerous as other cars think he is flashing them to proceed. I`ve done a bit of Googling and see it is not a one off problem, but have not really received a definative answer. It is a Y reg HDi with 150odd K on the clock. Cheers for any ideas.