Mondeo ST220
MY: 2003
Auto levelling Xenon headlamp system

issue: The front and rear dogs stopped working.
Checked fuses but all are fine. changed for new ones as a matter of double checking.

changed switch with two different types (one with the rheostat for manual headlight levelling and the other a xenon headlamps switch).

still no fogs.

bulbs been checked for breaks and they are working so a bit boggled by the fact one moment they were fine, the next nothing.

Has anyone had a similar issue? If so, how did you fix it.