Method for supporting vehicle with slope start assistant system starting on slope

The invention relates to a method for supporting vehicle with a slope start assistant system starting on slope. The vehicle includes a start-stop system, a slope start assistant system (HSA) and an automatic transmission or an automatic clutch. The method includes the following steps: making the mobile vehicle reduce the speed by means of driving a brake device by actuating a brake pedal on a slope, closing an engine by the start-stop system when the vehicle stops with the actuation of the brake pedal, combining an idle position (N) before or after the vehicle stopping with the closing of the engine by the start-stop system and the actuation of the brake pedal, and starting the engine by the start-stop system when the brake pedal is released at the state of vehicle stopping and is combined the idle position (N). According to the invention, when the slope start assistant system (HSA) does not intervene, the at least partly brake pressure is maintained tentatively, so that the vehicle on the slope maintains sto