I thought that when your abs light came on on the dash, then your abs wasn't working? Because my light goes on and off every once in a while and and I assumed it was because of a bad connection in the plug behind the front drivers wheel. The reason for my assumption is I had to replace my driver side - drive axle just over a year ago (think thats what its called) which I think I have to replace again, and its been coming on and off since then.