How to Deal with the HDC Warning Light?

1 Answers
DelAnthony
07/29/25 9:44pm
HDC is the Hill Descent Control system warning light. If the warning light is on, it is necessary to go to a 4S shop for repair. The Hill Descent Control system allows the driver to smoothly pass steep downhill sections without fully controlling the brake pedal. As needed, the braking device automatically controls each wheel to move forward slightly faster than walking speed, allowing the driver to focus entirely on steering. Here is some related information about HDC: 1. When HDC is set, after the vehicle enters a steep slope, the engine brake itself can provide a considerable degree of deceleration effect without the risk of tire lock-up. When the steep slope is too large and the engine brake is insufficient to maintain the speed limit, HDC can use the ABS system to initiate brake point release when necessary, reducing the gradually increasing speed to maintain a stable and safe downhill speed. 2. If the driver must steer to avoid obstacles during the steep descent, the HDC system will also detect this and further reduce the speed limit to 6.4 km/h to ensure complete control of the vehicle. After the HDC button is set, the driver must release all pedals, including the throttle, brake, and clutch of a manual transmission car, for it to take effect.
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