As ses310 points out, the button to kill TC is near your left knee on the dash. One push to disable TC; a long push to disable ESC and TC. As far as snow performance, I can report that the OEM rubber is awful--at least for the Nexen Roadians. They are good tires in other respects but not on snow or ice. Here's a guy with a mild hybrid Tucson that seems to be moving pretty well with Nokian WR SUV tires: