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What's the matter with the Hill Descent Control failure of Haval H2?

1 Answers

Paige

07/30/25 8:51am

The failure of the Haval H2's descent control function may be caused by a parking system malfunction, possibly due to issues such as an automatic parking module failure or brake pad problems. The most common reason is the lack of brake fluid in the vehicle's braking system. In this case, the system will determine that there is insufficient braking and will not activate the brake assist function, also triggering a fault warning light. Adding brake fluid can resolve this issue. Working principle of Hill Descent Control technology: After activating the Hill Descent Control function, the automatic transmission will automatically keep the gear in first gear without changing. For manual transmissions, the driver needs to shift the transmission into first gear and lift the clutch pedal. At this time, the vehicle will maintain a low speed (generally below 20 km/h) under the effect of engine braking. If the slope is very steep and engine braking is insufficient to control the vehicle speed, the vehicle's ESP system and ABS system will intervene, reducing the speed to a safe range through high-frequency intermittent braking. How to use the Hill Descent Control system: Before descending a steep slope, turn on the Hill Descent Control (HDC) switch. For automatic transmission models (including those with manual mode), shift the transmission into D gear (or manual first gear). For manual transmission models, shift the transmission into first gear and lift the clutch pedal. Then release the throttle and brake pedals to let the vehicle start, and the Hill Descent Control system will begin to work.

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