Hello I own a 2010 A5 Cabriolet which has just failed the MOT because of fog-lights but I am not sure the MOT tester is correct. He has failed it because he says the rear fog-lights aren't operating correctly, and only come on for a second then turn themselves off.
However, this what happens. When the headlights are on then I can switch both front and rear fog-lights on and they stay on. When only side-lights are on, I can switch the front fog-lights on and they stay on, but the rear fog-lights immediately turn themselves off again. When I don't have my headlights on at all, then both front and rear fog-lights immediately turn themselves off again.
Is the MOT tester correct and I have a problem, or are they in fact working as intended and the MOT tester is wrong?
Thanks