Hi
Had exactly the same problem a couple of weeks ago. Fog light (and switch light) stayed on despite actuating the switch. Fortunately mine cleared its self after a while and a considerable amount of poking around, disconnecting the battery and repeatedly actuating the switch. I don’t know if I’m correct or not but I came to the conclusion that it was a sticky latching relay issue in the fog light control box. I believe there is such an item hidden away somewhere behind the dash. I questioned the switch first but then twigged it was probably a momentary switch and not a latching switch like the others.
I now exercise the fog light circuit every time I jump in the car just to check and all now seems fine.
Good luck
Last edited by Rog; 10/04/13 04:54 PM.