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When the ABS (Anti-lock Braking System) malfunction lamp remains illuminated after the initial bulb check, it serves as a critical warning indicating that there is an issue with the ABS system. Specifically, this indicates that the system has detected a fault that may have resulted in a loss of ABS control at one or more wheels.
The primary function of the ABS is to prevent the wheels from locking up during hard braking situations, enhancing vehicle control and safety. If the warning light does not turn off, it suggests that the ABS may not be working properly, which can significantly affect braking performance, especially under slippery conditions.
While it is essential to assess the broader braking system, a continued illumination of the ABS light directly relates to potential malfunctioning of the ABS system itself, which can compromise safety. Therefore, it is crucial for drivers to address this warning and have the system checked and serviced if necessary before continuing to operate the vehicle.