The "Brake" light on the dashboard comes on for about 30 - 45 seconds and then goes off. It will do this several times, mostly right after the van has been sitting and then about 1 to 2 minutes into the drive it will go thru it's on then off cycle. It is not on when I first start or just pull out. I don't notice any degradation in the braking system. Is this tied to the ABS? Could it be low fluid (van's not here for me to check)? Or can it be pads worn? If it's ABS computer I'm looking at big $$ I assume.