What Causes Auto Hold Failure?
2 Answers
Auto hold failure is caused by a malfunction in the ABS pump. Below is an introduction to related content: 1. Auto Hold: The foreign term for auto hold is AUTO-HOLD, which refers to an automatic braking function. When this function is activated, such as when stopping at a traffic light, it eliminates the need to pull the handbrake, simplifying operations by avoiding the use of the handbrake or electronic parking brake. For automatic transmission models, it also reduces the need for frequent shifting between D to N or D to P. 2. Precautions: Regardless of the situation when parking, it is essential to develop the habit of pulling the handbrake lever tightly when leaving the vehicle. When using the handbrake, the lever must be pulled tightly; otherwise, it is easy to forget to release it when starting, which can lead to severe wear on the rear brake pads if the vehicle is forced to move.
Last week, the auto hold suddenly stopped working while I was driving, which gave me quite a scare at first. Later, I found out it's a common issue. Normally, it can hold the car on a slope by itself, but that time, pressing the button didn't work. I suspect there might be an issue with the brake sensor—either it's too dirty or there's poor contact in the wiring, which could interfere with the system. Additionally, if the car has just started or the battery is low, the system might go into self-protection mode and prevent the function from activating. I've also heard that software update bugs can cause such malfunctions, or accidentally pressing the settings button to turn off the function. Safety comes first when parking; after it failed, I immediately pulled the handbrake manually to prevent the car from rolling. During regular maintenance, remember to ask the mechanic to check the related circuits to avoid sudden accidents, especially during rainy or snowy weather when the risks are higher. If anything seems off, get it professionally checked right away.
