What is the reason why the ABS sensor of Sagitar always breaks down?
2 Answers
ABS sensor damage is related to driving, and it may also be caused by poor quality of accessories. The relevant introduction of ABS sensor is as follows: Introduction 1: The ABS sensor is used in the ABS (Anti-lock Braking System) of motor vehicles. Most ABS systems use inductive sensors to monitor the vehicle speed. The ABS sensor works with the gear ring that rotates synchronously with the wheels. Introduction 2: It outputs a set of quasi-sinusoidal alternating current signals, whose frequency and amplitude are related to the wheel speed. This output signal is transmitted to the ABS electronic control unit (ECU) to achieve real-time monitoring of the wheel speed.
My Sagitar has been running for six years, and all four ABS sensors have been replaced at least once. The most frequent issue was them failing every six months. The mechanic at the repair shop suggested the problem might lie in the chassis design—the sensors are installed too close to the tires, making them prone to getting clogged with mud and debris kicked up by the wheels. Additionally, the iron dust from worn brake pads mixes with water to form a muddy paste that sticks to the sensors, interfering with the signal. I later noticed that whenever I drove through waterlogged roads on rainy days, the sensors would inevitably throw an error within a few days. Now, every time I wash the car, I ask the mechanic to use an air gun to clean the dirt inside the wheel hubs, and during maintenance, we pay special attention to the sensor connectors. It’s been effective—no issues for a year now. If the same sensor keeps failing repeatedly, it’s worth checking the magnetic ring on the wheel hub bearing—it might be the culprit.
