When you are starting the vehicle or accelerating on a wet surface, you could lose control of the wheel because of wheel spin. TRC will help prevent such events from happening.
TRC continually monitors the condition between the tires and the surface of the road.
When it detects wheel spin, the system applies brakes or slows down the engine to regulate spinning and help ensure proper contact of tires. This help prevent the car from becoming unstable.
There might be the cases in which the half-side of the wheel runs off or the wheels spin off on the snowy road. And also there might be the case that the current tractino control might not be working well.
In those cases, Auto LSD is one of the technologies which both improve startability and runability.