What are the reasons for the continuous illumination of the ABS light on a car?
2 Answers
The reasons for the continuous illumination of the ABS light on a car are: 1. Abnormal connection between the wheel speed sensor and the ABS control unit circuit; 2. Excessive wheel bearing clearance; 3. Faulty sensor or actuator; 4. Low battery voltage or blown fuse; 5. Poor hydraulic regulation device; 6. Faulty electronic control device. The solutions for the continuous illumination of the ABS light on a car are: 1. Adjust the hydraulic device; 2. Connect the wheel speed sensor to the ABS control unit circuit; 3. Replace the sensor or actuator; 4. Replace the fuse. The function of the ABS on a car is to automatically control the braking force during braking, preventing the wheels from locking up and maintaining a state of rolling and sliding, ensuring maximum adhesion between the wheels and the ground.
I've been driving for over a decade and have encountered the ABS light staying on several times. The ABS system prevents wheel lock-up, and the light indicates an issue. The most common cause is dirt or mud covering the wheel speed sensor, especially after rain or driving on dirt roads. Another frequent reason is a faulty sensor itself, particularly in older vehicles. Additionally, a malfunctioning ABS module or poor electrical connections, such as loose connectors or worn wiring, can be to blame. Blown fuses are also not uncommon. When the light is on, the ABS system stops functioning, making it easier for wheels to lock up during hard braking, which is quite dangerous. It's best not to delay and to visit a repair shop as soon as possible to read the fault codes with a diagnostic tool to pinpoint the issue before repairs. When washing your car, avoid using high-pressure water jets directly on the inner wheel areas to protect the sensors.
