Going over the river and through the woods was more dangerous back when cars had crummy bias-ply tires, rear-wheel drive, and ...
If the ABS and overall braking system is working properly, then the warning light you’re seeing is probably being caused by a sensor or part of the electrical circuit involved in controlling the ABS.
Motoring Chronicle on MSN

10 warning lights you should not ignore

You should never ignore critical warning lights like the Oil Pressure, Brake System, Engine Temperature, Battery, and Ai ...