What could be the reason for fault with 5D Stilo front fog lights that won't turn off by the switch on control panel when fog lights are once turned on? Indicator led for fog lights on the instrument cluster will turn off when pushing the switch but fog lights on the vehicle nose will stay on. If front fog lights turned once on, only way to get front fog lights off is turn off the ignition. When ignition turned on again, front fog lights won't turn on. Tried to change relays between horn and fog lights but this did not make any difference to the function of fog lights.