How to solve the ABS system problem?
3 Answers
ABS is the anti-lock braking system. Being prompted to check the ABS system indicates there's an issue with it. Below are solutions for common ABS system faults: 1. ABS wheel speed sensor problem: The wheel speed sensor is located on the wheel and can easily get contaminated by dirt or mud. If the sensor is covered with excessive dirt, it may affect the transmission of speed signals, causing the ABS computer to fail in reading the signals and trigger an alert. In this case, cleaning the dirt off the sensor and adjusting the gap between the sensor and the signal ring can resolve the issue. If the wheel speed sensor is damaged, replacement is the only option. 2. ABS wiring connection fault: This is another common issue. Although all vehicles are equipped with ABS systems, differences in manufacturing processes, assembly quality, and materials can lead to variations. Loose connections of the wheel speed sensor wiring are frequent problems and should be checked thoroughly. Troubleshooting wiring can be tedious, so patience is required. It's advisable to inspect each connector, including the contact condition of related fuses and the grounding of the ground wire.
Last year, the ABS light came on, which was really scary because the ABS system wasn't working, making the wheels prone to locking up during braking—super dangerous. I immediately checked the wheel speed sensor, which often gets clogged with dirt or gravel, but the light stayed on even after cleaning. Later, I used an OBD scanner connected to the port under the dashboard to read the error code and found it was a wiring issue. For handling it, don't force it—the ABS module and sensors are delicate, and messing them up yourself could make things worse. I suggest trying the self-test mode first (turn the key to ON without starting the engine for a few seconds to see if the light flashes). If that doesn't work, head straight to a 4S shop or a professional repair shop—they have all the equipment and can fix it for around 1,500 yuan. For daily driving, pay more attention to maintenance; cleaning the sensors while washing your car can prevent a lot of issues.
My car's ABS warning light occasionally flashes, with sensor failure being the most common issue. The sensors are located on the inner side of each wheel and prone to dirt accumulation. For troubleshooting, I first connect a Bluetooth scanner to the OBD port via a mobile app to scan for trouble codes. If a C-code appears, I conduct targeted checks: for example, inspecting whether the wheel speed sensor wiring is worn or broken, or re-seating loose connectors. Replacing sensor components can be a DIY task, but ensure the correct model is purchased to avoid mismatches. Additionally, insufficient or contaminated brake fluid can affect signals, with a fluid change costing around 200-300 RMB. For safety, avoid high-speed driving when the light is on and proceed slowly to a repair shop. Research common issues like system false alarms for preventive measures.
