What is the reason for the ABS light on the car dashboard?
2 Answers
The reasons for the ABS light on the car dashboard are: 1. Poor road conditions causing front wheel slippage or spinning; 2. Severe contamination of the ABS sensor leading to poor signal contact; 3. Damage to the ABS sensor connection wires due to collision; 4. Aging or damage of the ABS sensor. The ABS system consists of an ABS pump, wheel speed sensors, and a brake switch. Its working principle is: during emergency braking, the highly sensitive wheel speed sensors installed on each wheel detect wheel lock-up, and the computer immediately controls the pressure regulator to release pressure from the wheel's brake cylinder, preventing wheel lock-up.
I think when the ABS light comes on, it usually indicates a problem with the anti-lock braking system. There could be several possible causes, with the most common being a dirty or faulty sensor near the wheel. If you've driven through muddy roads or snowy conditions, debris may block the sensor, preventing signals from being transmitted. Another issue could be wiring problems, such as loose connectors or corrosion—prolonged driving over bumpy roads can lead to poor contact. Additionally, the brake pump assembly or a blown fuse might be the culprit, especially during humid seasons or when the vehicle's starting current is too high, causing the fuse to burn out instantly. Furthermore, the car's electronic control module might malfunction, particularly if the software isn't updated or the hardware has aged. If the ABS fails, the wheels may lock up during emergency braking, which is extremely dangerous. I recommend taking the car to a professional repair shop immediately for a diagnostic check to avoid bigger issues down the road.
