What does the TC light on the dashboard mean?
1 Answers
The TC light on the dashboard indicates that the traction control system is active. This system relies on ABS anti-lock braking system electronic sensors. When it detects that the speed of the driven wheels is lower than that of the driving wheels, it sends a feedback signal to the vehicle's system. The vehicle system then adjusts ignition timing, reduces throttle opening, decreases fuel supply, downshifts, or applies wheel braking accordingly to prevent wheel slippage. The traction control system uses steering wheel angle sensors to understand the driver's steering intention and employs wheel speed sensors to detect speed differences between left and right wheels, thereby determining whether the vehicle's turning behavior matches the driver's steering input.