What Causes the Haval Auto Hold Malfunction?
3 Answers
Haval electronic parking system malfunction could be due to issues with the electronic handbrake, brake pad wear, or electronic system problems. It is necessary to visit a repair shop to read the fault code with a decoder and perform repairs based on the fault code. Below is additional information: 1. Auto Hold: Auto Hold refers to an automatic braking function. Once activated, for example, when stopping at a traffic light, it eliminates the need to pull the handbrake, simplifying operations by avoiding the use of manual or electronic handbrakes. For automatic transmission models, it also reduces the need for frequent switching between D to N or D to P. 2. Traditional Handbrake: The traditional handbrake requires the driver to manually release the handbrake or skillfully coordinate the throttle and clutch for a smooth start on slopes.
When I was driving my Haval H6, I once encountered a situation where the auto-hold function failed. Later, I found out it was just a minor issue—the wheel speed sensor was covered in mud. Especially after rain or snow, the mud and water splashed by the wheels can easily cover the small sensor on the inner side of the wheel. Additionally, loading the trunk too heavily can also cause the car to misjudge, thinking it's on a slope and refusing to release the brake. One time, a yellow warning light appeared on the dashboard, and it turned out to be caused by unstable battery voltage affecting the system. Usually, if you press the auto-hold button at a red light and it doesn’t work, it’s probably because you forgot to fasten your seatbelt—the car is designed to require the seatbelt to be fastened first before the system activates. But in the end, the system is quite delicate, so it’s important to regularly clean the sensor areas on the chassis. Too much mud or water can cause immediate malfunctions.
From a circuit repair perspective, the three common failure points of Haval's auto-hold function are: rodent damage to wheel speed sensor wiring or loose connectors, poor contact in the brake light switch (especially due to frequent braking causing contact wear), and water ingress in the electronic parking brake ECU module. Last time, a colleague's car experienced poor contact because the wiring harness interface was disturbed during reverse camera installation. Remember, in case of failure, directly disconnecting the fuse for a restart is the emergency workaround. Here's a lesser-known fact: this feature automatically deactivates above 3,000 meters altitude—don't panic if it fails during high-altitude travel.
