ABS light and buzzer question..

On my mother in laws car the ABS light comes on and the buzzer sounds off. I have done all the normal things like check fluid,disconnect the negitive battery cable. :confused: has anybody had a similar problem?

Well it means that there is a problem with the ABS system. Low brake fluid will not cause this light. You are going to have to get it scanned to see what is faulting in the system.