The ONLY negative effect to the ABS light being on is, the anti-lock feature is not working. That means when you feel the brakes lock up you must manually let off pedal pressure to allow the wheels to roll slightly = pump the brake pedal. Otherwise they work normally.
Some decades ago the auto makers petitioned the feds to allow them to either eliminate the ABS system or offer it as an option; as studies have shown the ABS system has done little to reduce traffic accidents, and would reduce the cost of a new vehicle by $600-at that time; it was denied. Since then auto makers have used the ABS system to invent several useful safety features.
2000 Winnebago Ultimate Freedom USQ40JD,
ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy