What does it mean when the TC yellow light is on?

1 Answers
DeBrody
07/29/25 10:20pm
tc yellow light on indicates that there may be a fault in the traction control system. The tc indicator light corresponds to the traction control system, also known as the track control system, whose function is to enable the car to obtain the best traction under various driving conditions. If the traction control switch next to the gear lever is turned off, the indicator light will come on; if you rule out the possibility of accidentally pressing it yourself, it indicates that there is a fault in the traction control system. The working principle of the traction control system is to replace the mechanical connection between the accelerator pedal and the throttle with an electronic throttle control device. The sensor transmits the information of the accelerator pedal to the ECU, and the ECU generates a control voltage signal based on this signal. Then, the servo motor adjusts the throttle according to the signal, thereby reducing the throttle opening and controlling tire slip.
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