What to Do When the ABS Light on the Car Dashboard Comes On?
3 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 operation. Alternatively, check the wiring connections and reconnect any loose ones. How ABS Works: During braking, the ABS quickly determines the wheel lock-up state based on the speed signals from each wheel speed sensor, closes the normally open input solenoid valve on the wheel that is starting to lock up, and keeps the braking force unchanged. 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 completely 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 effect and the safest driving. 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.
Having driven for over ten years, I place great emphasis on driving safety. Once the ABS light comes on, I know there might be an issue with the anti-lock braking system, making the wheels prone to locking up and skidding during braking. I immediately slow down and find a safe spot to check tire pressure and whether the sensors are covered in mud. If everything looks normal but the light remains on, I never force myself to keep driving—it’s especially dangerous at high speeds or in rainy conditions. It’s best to call a tow truck or head straight to the nearest repair shop for a professional diagnosis with specialized equipment. On a regular basis, I clean around the wheels myself every month to prevent dust buildup from causing problems. During routine maintenance, I always remind the mechanic to inspect the ABS module—early prevention saves a lot of trouble.
I really enjoy studying cars. When the ABS light comes on, I usually start with some simple troubleshooting: after parking, I check if the wheel speed sensor is dirty or blocked by snow/ice, then clean it to see if that helps. If not, I check the fuses in the fuse box to see if any are blown—if so, I replace them with new ones. Once, when I was working on it myself, the issue was a loose sensor wiring harness, and reconnecting it solved the problem. But for beginners, it's best not to tamper with it—if you don’t have tools or experience, it’s safer to consult a professional. The ABS system is critical for emergency braking, so when the light is on, I drive more cautiously and avoid sudden stops. Making it a habit to inspect tires and brake components every six months can help reduce such issues.
