What is the autoh function?

[DeElla]

autoh refers to the Auto Hold function. The application of Auto Hold technology allows drivers to avoid unnecessary vehicle sliding without the need for prolonged braking or activating the electronic parking brake. Below is an introduction to the Auto Hold function: 1. Prevents the vehicle from rolling backward when starting on a slope: Traditional parking brake devices require the driver to manually release the handbrake based on experience when starting on a slope. The AUTOH Auto Hold function, however, uses a slope sensor to provide precise parking force through the controller. During startup, the parking control unit calculates information from the clutch distance sensor, clutch engagement speed sensor, and throttle pedal sensor. When the driving force exceeds the running resistance, the parking brake is automatically released, enabling smooth vehicle startup. 2. Automatically activates four-wheel braking when waiting at a red light: To use it, simply press the "AUTOH" button lightly to activate the corresponding Auto Hold function. The intelligent AUTOH Auto Hold function automatically engages four-wheel braking when the vehicle is stopped at a red light or on a slope, keeping the vehicle stationary even in D or N gear without the need to continuously press the brake pedal or use the handbrake. To release the stationary state, simply lightly press the accelerator pedal to disengage the brake. This function is particularly practical for drivers frequently navigating stop-and-go city traffic and is also favored by those who often experience vehicle rollback.

[AnaFitz]

Last time I drove my friend's new car, I discovered the autohold function—it's a total game-changer for red lights! After firmly pressing the brake, the system automatically engages the handbrake, keeping the car perfectly still even when you take your foot off the pedal. A light tap on the accelerator at a green light releases it automatically, and no more worries about rolling back on slopes. It's a lifesaver for someone like me stuck in daily traffic—finally giving my right foot a break. Just remember not to activate it while reversing, as it can make maneuvering awkward. Also, note that some older models may see increased fuel consumption with this feature.

[ReaganRose]

My understanding of autoh is that it's an intelligent parking assist system. When driving, simply press the brake pedal firmly to activate it. After the sensors determine the vehicle has come to a complete stop, the electronic parking brake will automatically engage. When starting off, the computer coordinates the transmission and throttle - just lightly press the accelerator to disengage it. The solenoid valves hidden in the electronic parking brake unit do the work, making it much easier than a mechanical handbrake. During rainy day traffic jams on elevated roads, your right foot will never cramp again. However, during emergency braking stops, ABS might intervene with a slight thumping sound.

[McAlexandra]

autoh stands for Auto Hold, which is particularly useful when waiting at traffic lights. After coming to a complete stop, a green indicator on the dashboard lights up, and you no longer need to keep your foot on the brake pedal. I once found it very effortless to use in combination with ACC during a long drive. Some vehicles automatically activate it when shifted into P gear. The principle involves the ESP pump applying pressure to lock the brake pads. Before using it, check to ensure the auto start-stop function is turned off to prevent conflicts between the two features. Remember to deactivate it in advance when approaching old basement barriers to avoid radar misjudging the vehicle's position.

[VanBrayden]

As a veteran driver with ten years of experience, I find the autohold feature most useful for starting on steep slopes. Back when I drove a manual transmission, rolling back on a slope was my biggest fear. Now, with autohold-equipped cars, there's a two-second hold after releasing the brake. I've tested it on an 8% gradient road, and there was absolutely no rollback. The system determines the vehicle's status through wheel speed sensors and tilt angle sensors, reacting about 0.3 seconds faster than mechanical handbrakes. However, remember to turn it off promptly after wading through water, as accumulated water may affect sensor sensitivity.

[MacLillian]

Many people confuse Auto Hold and Hill Start Assist. In fact, Hill Start Assist only works for two to three seconds, while Auto Hold can last until the accelerator is pressed. Its control unit is connected to the ESP and electronic parking brake, maintaining brake fluid pressure at around 80 bar when parked. It's particularly useful in shopping mall spiral garages, eliminating the need to shift back and forth. However, it's important to note that vehicles with modified brakes may require recalibration. I usually keep it on during traffic jams, but for long downhill slopes, switching to manual mode is more reliable.