> This light warns you of the possibility of losing traction. No more,

> no less.

Do you really think that ice isn't slippery below 17 F . I was going to ignor your silly post but now I will explain to you the probable reasoning behind the lights range. The upper limit of 36 is because you may not be aware that it is approaching the freezing point. Also when it is near freezing the snow on the side of the road will melt and make a road which was cleared , now a road covered with ice. When the temp is below 23 most of the ice or snow will stay frozen and not spread into the road. Also if the light was on all the time then you would not pay attention to the light. If you lived in an area which experienced winter then you might be able to figure that out.