I've had this problem before - in cold weather (low 30's or colder) the TC light comes on easily with just a bump or a quick start. It had reset itself before, I assumed it was just slick roads, but the sensor seemed lots more sensitive in the cold. Took it into the dealer last winter for this - dealer couldn't find anything wrong. Weather warmed up and problem seemed to go away.
Last night running home from work, 45 degrees, went over an expansion joint on a bridge and the TC light went on again, but now it won't reset itself.
I'm going to refer this to the dealer when I get my fuse recall done. I'm making an appointment for over my Christmas break - but I was hoping someone here had gone through this. I looked up some threads, but nothing seemed recent, or definitive. Any help or ideas would be welcome... you know, in case the dealer doesn't fix it this time either.