2001 GTI brake dash light flashing!!!
 

I have recently purchased a 2001 Golf GTI 1.8T for my son to take to college. It has 82K on it. I was told by the P.O. that after driving awhile in the heat, the brake lite would flash. Well when taking a test drive, I felt an obvious tug in the rotors, and thought that was the problem. After purchasing the car, the brake light did indeed start flashing, along with the ABS light comming on as well as the warning triangle just below the ABS light.
Today I replaced the pads and rotors on all four corners, and cleaned the electtric sensors insode the rear rotors. The "obvious tug" is now gone, so I got that right...But after driving for awhile the lights came bck on... where do I start looking now?

Thanks!!!

Doug (aka, zwbeetle)