The digital display on my 2001 STS quit lighting up. All the controls work both on the dash and on the steering wheel but I have to guess at the temps. Is there a fuse for the display? All of the buttons light up with the exception of the indicator for the defroster both front and rear. Also my fog lights don't come on, the dash says they are on but nada, I am guessing this is a separate issue, but they both stopped working at the same time.

 

oops left out that it is just the AC control display that does not light up!