I have a similar broblem. My DSC light remained on for months and would not go out even when you press the button. Last week, got the check engine light, trans fail safe warning, abs light, and brake light. My local mechanic felt it was a bad ABS module (1300) brand new, but I opted to send out my original unit to get remanufactured. The Remanf experts found no fault with ABS unit and are sending it back.

I read on a couple of threads that it could be a wheel speed sensor, alternator, battery, or mass air?

It's worth mentioning two weeks ago I had the alternator replaced with a Bosch aftermarket one...

Any ideas?