Greetings:
My 89 525 has an irritating interminent problem that is about to become a full blown headache. Sometimes when I raise the fog light/headlight switch to on, only the fog lights come on. I am careful to raise the switch to the top, which should turn on the headlights, but nothing. I am thinking a relay may be worn out? What is the headlight/fog light module? Could it be causing this? With the end of Daylight savings time just around the corner, I'd like to get this fixed soon.

Thanks in advance.

Steve C
89 525i, Auto, 133K miles