What does the yellow TC indicator light mean?

1 Answers
OEllie
07/30/25 12:21am
The TC with a slash yellow light on the car is the Traction Control System, also known as the Track Control System. Generally, when this indicator appears on the car dashboard, it is normal for it to light up when the car is just started. The system will automatically detect the status of the traction control system, and it will turn off after the detection is normal. If it stays on, it may be because the traction control system is turned off, and you need to find the control switch of the system to turn it on, usually located next to the vehicle's gear lever. If it is not because the traction control system switch was accidentally turned off, there may be a fault in the traction control system, and it is necessary to promptly confirm the fault and its cause. If there is a fault, it is necessary to go to a professional repair shop in time. Extended information: 1. 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 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. For car owners driving in rainy or snowy weather, it can reduce phenomena such as vehicle skidding or loss of control. 2. Because the car's traction control system fails, the car may not be able to obtain the best traction, which may cause the car to not start or accelerate smoothly when driving on slippery roads, and it may still skid in place, leaving the car's drive wheels in a state of idling.
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