Hello all, new here. Just bought the wife a 2018 Santa Fe SE. Got it home and I was poking and prodding, trying to turn on the fogs. Come to find no switch and it's only on the upper levels. However, the lights appear to be there and so is the wiring and fuse. So my question is, can I just change the light switch assembly to get fogs? Does the PCU need to be flashed? Thanks for any help!