The ABS light randomly comes on. It will reset sometimes. And now randomly the ABS system activates for no reason. I can hear the twanging sound and feel it in the pedal. At times this happens even when the brakes aren't activated- just driving straight down the road. This is on dry pavement, clean road, etc. No apparent reason. Any ideas what's going on and how much will this cost to fix? Could this be serious at freeway speeds? This might be the end of the road for this one....