Have recently bought a C5 2.0 HDi Sallon
I have noticed that when drivng with the headlights on (auto) the headlights
seem to dim just for an instant before returning to normal. The best way I
can describe it is like a momentary "switching" of the lights. This happens
once every few minutes...
Is this normal or should it be cause for concern that the electrics are
about to pack in?