The traction control sensor light comes on in a 2006 Hyundai when there is a problem with the traction control system. This system helps the vehicle get to a safe position when sliding on wet or icy pavement.
If the traction control light appears intermittently, the condition is likely not permanent, but it could also indicate that the system is not operational. Many systems also show a warning light when driving in conditions where sliding may occur, such as rain. If the light comes on without blinking, it indicates a deactivated system, and the car has no traction control. If the light illuminates in any way, it is a good idea to have it evaluated by a professional.