No Heated Mirrors or Fog Lights

Both of those circuits are body controller outputs. There are no fuses. The body controller can sense how much current each circuit is drawing. The switch will flash when the body controller has detected a problem, either too much current draw, or not enough. Once a problem has been detected, it will cut power to that circuit until the next key cycle no matter what you do. So if you fix it and never cycle the key, the lights will never come back on. Anyway, left and right mirrors are different circuits, so one or the other should work. Unplug your fog lights one at a time and cycle the key and retest to see if one of the lights are shorted. They could both be burnt out too.

 

I just purchased a 2012 Prostar and I have replaced both fog lights. They were visibly bad. The new ones do not work and the switch flashes. Is there a certain sequence or process to cycling the switch? Thank you.

 

Some are programmed so that they only turn on with the high beams. If not, check for 12v at the fog lights, may have a wiring issue.