What is the Auto Hold Function in Manual Transmission?
2 Answers
Auto Hold is an automatic braking function that eliminates the need to pull the handbrake once activated. Working Principle of Auto Hold: Through a gradient sensor, the controller provides precise parking force. During startup, the parking control unit calculates data from the clutch distance sensor, clutch engagement speed sensor, and accelerator pedal sensor. The parking brake is automatically released when the driving force exceeds the running resistance, ensuring smooth vehicle starting. Definition of Auto Hold: It refers to the integration of temporary braking during driving and long-term braking after parking, achieved through electronically controlled parking brake technology.
I dread rolling back on hill starts with a manual transmission the most, and the auto hold feature is a lifesaver! When you fully press the brake at a red light, a green 'P' light illuminates on the dashboard, and the system locks the brakes, allowing you to take your foot off the brake pedal. To start, just press the clutch and give it gas—the car releases the brake and moves forward without any rollback for the first few seconds. Once during morning rush hour on the Hangzhou elevated road, my ankle was so sore from the traffic, and this feature saved me. However, it does increase clutch wear. After three years, I noticed more pronounced shuddering during half-clutch engagement, and the mechanic suggested turning it off in heavy traffic to better protect the clutch disc.
