Recently purchased 04 TL from original owner. Fogs do not come on. I spin the collar and the fogs indicator on the dash lights up, but no fogs. Did a few searches here on the forum but nothing, so I'm guessing not a common issue.

Any idea where to start looking for the problem? Bulbs seem fine...

 

Might seem very basic, but are the headlights on when you try to turn the foglight switch on?

 

yes

 

Replace the bulbs?

 

I have not replaced, but they look fine. Now that I think about it, I've yet to check the fuse (not sure which one but I'm sure I'll find it). Otherwise any other ideas would be great - I'll update my findings tomorrow.

 

just because a bulb looks good doesnt ean it is. I have had numerous times where a bulb looked perfectly fine, but once i place a new one in its spot, the new one worked.

 

could grab a multi-meter and test the harness.