Well, I'll answer my own question. There are two little three-fingered pins on the circuit board. The one with equal sized fingers runs the bright headlights. The one with three different sized fingers runs the turn signals. One of those had an end who's notch was broken off so it could no longer ...

My 2008 S40 turn signals stopped working this weekend. Press or lift the stem, nothing happens at all. The 3-flash lane change function to the left had stopped a couple of months ago. The hazards work, the turn signal stem still operates the bright headlights and the "messages." Per a couple of ...