What does the ABS light indicate when starting a vehicle?

The ABS light, or Anti-lock Braking System light, serves an important function when starting a vehicle. When the vehicle is started, the ABS light briefly illuminates as a part of its self-check process. This momentary activation indicates that the system is undergoing a diagnostic check to ensure that it is functioning correctly.

If the ABS light turns off after this initial check, it signifies that the ABS is operational and has no detected faults, meaning the system can indeed help prevent wheel lockup during hard braking. This is vital for maintaining control of the vehicle in slippery or emergency situations.

If the light remains on after the vehicle has been started, it suggests that there may be an issue with the ABS system, which would need to be investigated further. Understanding this process is crucial for vehicle safety and helps drivers to recognize when their braking systems might require attention.