What to Do When the ABS Light is On?

[ORuth]

ABS (Anti-lock Braking System) is designed to prevent the wheels from locking up during braking. Sensors installed on the wheels detect when a wheel is about to lock, and the controller commands the regulator to reduce the hydraulic pressure in the wheel's brake cylinder, decreasing the braking torque. After a certain period, the original hydraulic pressure is restored. This cycle repeats continuously (up to 5~10 times per second), ensuring the wheels remain rotating while maintaining maximum braking torque. Here are the steps to address an illuminated ABS light: 1. Carefully inspect the wiring and connectors to check for poor contact or damage. 2. Examine the installation gap and position of the wheel speed sensor and the toothed ring, and check for contamination by dust or debris. Also, inspect if the wheel bearing gap is too large and adjust it to the normal value. 3. Avoid high-speed driving and sudden braking, and take the vehicle to a 4S shop for inspection and repair as soon as possible.