What to Do When the ABS Light Comes On?
2 Answers
Clean the dirt on the vehicle speed sensor and adjust the gap between the vehicle speed sensor and the signal ring to restore normal function. Alternatively, check the connection points of the wiring and reconnect any loose ones. How ABS Works: During braking, ABS quickly determines the wheel lock-up state based on the speed signals from each wheel speed sensor. It closes the normally open input solenoid valve on the wheel that is starting to lock up, keeping the braking force constant. If the wheel continues to lock up, the normally closed output solenoid valve is opened, causing the braking pressure on that wheel to drop rapidly due to the direct connection to the brake fluid reservoir, preventing the wheel from fully locking up due to excessive braking force. This keeps the braking state at the optimal point (slip ratio S of 20%), ensuring the best braking performance and maximum driving safety. Functions of ABS: Maximize the effectiveness of the brakes, reducing braking time and distance. Effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability. Allow steering during emergency braking, providing good steering control. Avoid severe friction between the tires and the ground, reducing tire wear.
When the ABS light comes on, I immediately pull over to a safe spot by the roadside. ABS stands for Anti-lock Braking System, and the illuminated light may indicate that the sensors are dirty or obstructed by debris. I've personally tried rinsing the sensors inside the wheels with clean water; if the issue persists, there might be a problem with the fuse or wiring—open the fuse box and check if the ABS fuse is blown. For safety, avoid driving too fast because if the ABS fails, emergency braking can easily cause skidding, especially on slippery roads during rain. Quickly call for a tow truck or visit a professional repair shop for diagnostics. They can use a computer to identify the issue—minor problems like replacing a fuse or cleaning the sensors can be easily fixed. Don’t delay to avoid endangering yourself or others.
