ABS light not working

First thing first, get a scan done and let's see if there is a logged code. If there is one, please post it here for further assistance. You can also check your owners manual under electrical and see if there is an ABS fuse in the system that has blown. If so replace and see if the system stays active. If it blows a fuse again, the code read may be our best chance to find a problem, start here.