How to Deal with the Fault of Hill Descent Control and Auto Hold Function in Haval H2?
1 Answers
Haval H2 hill descent control malfunction may be caused by parking system failure, brake pad issues, and other reasons. The most common cause is the lack of brake fluid in the vehicle's braking system. In this case, the system will determine insufficient braking and will not activate the brake assist function, also triggering a fault warning light. Adding brake fluid can resolve this issue. The working principle of hill descent control technology is introduced as follows: Introduction 1: After activating the hill descent control function, the automatic transmission will automatically maintain the gear in first gear, while the manual transmission requires the driver to shift into first gear and release the clutch pedal. At this time, the vehicle will maintain a lower speed (generally below 20 km/h) under the effect of engine braking. Introduction 2: If the slope is very steep and engine braking is insufficient to control the vehicle speed, the vehicle's ESP and ABS systems will intervene, reducing the speed to a safe range through high-frequency intermittent braking. Once the speed drops to a safe range, the braking system will cease operation, and the speed will continue to be controlled by engine braking to prevent the braking system from overheating due to intense operation, ensuring the integrity of the vehicle's final safety barrier. Introduction 3: If the driver suddenly steers to avoid obstacles during descent, the system will immediately reduce the speed to 6-8 km/h to ensure the driver can effectively control the vehicle.
