What exactly does hill-start assist do?

1 Answers
PaigeMarie
07/29/25 11:32pm
By applying braking force to all four wheels through the system to prevent the vehicle from rolling backward, it effectively reduces the risk of rollaway accidents during parking on slopes. Simply put, when starting on an uphill, the vehicle can automatically apply the brakes to prevent rolling back. The English name for hill-start assist is Hill-start Assist Control, abbreviated as HAC. It is a function derived from the ESP system. Below is relevant information about hill-start assist: I. Conditions: 1. The gearshift lever is in any position other than P (for automatic transmission models). 2. The accelerator pedal is not depressed. 3. The vehicle is in a stationary state. 4. The parking brake is not engaged. II. Function: Allows the vehicle to maintain braking for a few seconds after the driver releases the brake pedal during hill starts without using the handbrake. This enables the driver to easily move their foot from the brake pedal to the accelerator pedal, preventing rollback accidents without causing panic or rush.
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