What is the TC light?
2 Answers
TC light is the Traction Control System indicator. When the TC light is on, it indicates that the Traction Control System is active. During acceleration, if the system detects a significant speed difference between the drive wheels and non-drive wheels, the computer immediately determines that the driving force is excessive and sends a signal to reduce the engine's fuel supply, thereby decreasing the driving force and reducing the slip rate of the drive wheels. The working principle of TC is: replacing the mechanical connection between the accelerator pedal and the throttle with an electronic throttle control device. Sensors transmit the accelerator pedal's information to the ECU, which generates a control voltage signal based on the input. The servo motor then adjusts the throttle according to the signal, reducing the throttle opening and controlling wheel slip.
After driving for so many years, I've encountered the TC light on the dashboard numerous times—it's the Traction Control System indicator. When you're driving, especially on slippery roads or taking turns, if the vehicle starts to skid, this light will flash, indicating the system is actively working to stabilize your car. However, if you notice it stays lit continuously, there might be an issue, such as a faulty sensor, damaged wiring, or a malfunction within the system itself. In conversations with friends, I often remind them not to ignore this light, as it's a safety feature just like the ABS light. Once, on a rainy highway, I saw the TC light flash a few times, and the speed automatically adjusted, preventing a potential skid. So, if the light remains on constantly, it's best to visit a professional repair shop promptly to ensure driving safety.
