What is the difference between Auto Hold and Hill Start Assist?
2 Answers
The main differences between Auto Hold and Hill Start Assist are: Hill Start Assist is a function derived from the ESP system, while Auto Hold is a function where the controller provides precise parking force based on data from a gradient sensor. Additional information: 1. Hill Start Assist System. It allows the vehicle to maintain braking for a few seconds when starting on a slope without using the handbrake, even after the driver's right foot leaves the brake pedal. This makes it easier for the driver to transition their foot from the brake pedal to the accelerator pedal, preventing rollback accidents and reducing driver stress. 2. Auto Hold Function. During startup, the parking control unit calculates information from sensors such as the clutch distance sensor, clutch engagement speed sensor, and accelerator pedal sensor. When the driving force exceeds the running resistance, it automatically releases the parking brake, enabling smooth vehicle startup.
After driving for so many years, I've found that Auto Hold and Hill Start Assist indeed serve different purposes. Auto Hold comes into play when you're parked, like at a red light or in traffic—once the car stops, it automatically keeps the brakes engaged, so you don't have to keep your foot on the brake pedal, which is a real relief. Hill Start Assist, on the other hand, is specifically for the initial moving phase, especially on inclines. When you release the brake, it briefly maintains braking force for a second or two to prevent the car from rolling backward, giving you time to press the accelerator and start moving. Both are controlled by electronic systems but apply to different scenarios: Auto Hold works anywhere, while Hill Start Assist only activates on slopes. As someone who drives a lot in the city, Auto Hold reduces my fatigue, and Hill Start Assist has been a lifesaver on parking garage ramps. Simply put, one is a parking aid, and the other is a temporary anti-roll guardian for hill starts.
