What is the difference between autohold and electronic parking brake?

[SanGemma]

The differences between electronic parking brake P and AUTOHOLD are as follows: 1. Differences in usage functions. Electronic parking brake: It is a parking brake controlled by electronic circuits. After the electronic parking brake is activated, as long as the seat belt is fastened, you can start directly without turning off the electronic parking brake first. AUTOHOLD is an automatic parking system: It allows the driver to avoid unnecessary vehicle sliding without needing to press the brake pedal for a long time. 2. Differences in braking functions. When parking on a slope: The AUTOHOLD automatic parking function provides accurate parking force through the slope sensor by the controller. When starting: The parking control unit calculates the information provided by the clutch distance sensor, clutch engagement speed sensor, accelerator pedal sensor, etc. 3. Differences in braking functions. When releasing the braking state: Just lightly press the accelerator pedal to release the brake. The driver only needs to start, and the system will automatically turn off the brake. AUTOHOLD when starting on a slope: Allows the owner to leisurely release the brake and then press the accelerator to start, just like starting on flat ground, without causing the vehicle to roll back.

[DelLeilani]

Using autohold while driving is indeed effortless. After stopping, it automatically holds the car in place, so you don't have to keep pressing the brake pedal, allowing your foot to relax. When starting, simply press the accelerator to go. The electronic parking brake is different—after stopping, you need to manually press the button to lock the wheels and prevent rolling, and you must press it again to release before driving. The difference lies in that autohold is a temporary aid used during red lights or traffic jams, while the electronic parking brake is a long-term fixed parking mechanism. Many drivers think they are similar, but misuse can cause issues—for example, forgetting to release the parking brake before driving can wear out the braking system. Nowadays, cars come equipped with these features, and using them properly can extend part lifespans while making driving safer and more comfortable. I recommend using autohold on flat roads to reduce fatigue and relying on the parking brake on slopes for better security. Don’t over-rely on automatic features and neglect good habits—developing proper driving techniques is what truly matters.

[Eva]

From a technical perspective, there are significant differences in the principles between autohold and electronic parking brakes. Autohold is integrated into the vehicle's electronic braking system, automatically maintaining hydraulic pressure when stopped to help hold the car in place. The electronic parking brake, on the other hand, is an independent module that uses a motor to directly clamp the wheels, similar to a traditional handbrake but more convenient. The differences are clear: autohold relies on the service brake system for temporary operation, activating when you release the accelerator pedal; the electronic parking brake is for parking and requires manual activation. Autohold typically works in Drive (D) mode, while the electronic parking brake is effective only in Park (P) mode. In terms of safety, they complement each other—for example, autohold prevents rolling back during hill starts, while the electronic parking brake provides additional support. However, after driving for a while, I've found that the electronic parking brake is more durable because autohold is sensitive to sensors and prone to accidental activation. It's advisable to thoroughly test these features when you get a new car and not wait for a malfunction to occur. Regular maintenance checks of the electronic control system are crucial.

[Kaylee]

Safety comes first. When discussing the difference between autohold and electronic parking brake, it's crucial to emphasize anti-rollaway. Autohold automatically brakes during brief stops, such as at traffic lights, and releases when you press the accelerator. The electronic parking brake permanently locks the wheels to prevent movement after parking. Autohold relies on the vehicle's dynamic systems, and if it fails, the car may roll; the electronic parking brake operates independently and is more reliable, but its slower activation might cause delays. When driving, I always remind myself: use the electronic parking brake first on slopes to secure the car, then combine it with autohold for assistance during starting; in the city, just use autohold at traffic lights for convenience. Incorrect operation can lead to accidents—forgetting to turn off autohold may cause unstable acceleration, and forgetting to release the parking brake can overheat the brake discs. Beginners should practice safe starts more often, develop habits of dual protection, and not rely solely on buttons for convenience.