What does the hill start assist in a car mean?

1 Answers
RicardoFitz
07/29/25 12:00pm
Hill start assist in a car is a function derived from the ESP system, which allows the vehicle to start on a slope without using the handbrake, preventing the phenomenon of rolling back. The activation conditions for the hill start assist system are: 1. The gear shift lever is in any position other than P; 2. The accelerator pedal is not pressed; 3. The vehicle is stationary; 4. The parking brake is not engaged. The principle of the hill start assist system is: When starting uphill, the HAC system automatically maintains brake oil pressure for 2 to 3 seconds the moment the foot leaves the brake pedal to press the accelerator, preventing the car from rolling back.
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