Chaps. Like it says. Only it only happens if the handbrake is used with the car facing uphill, like doing a hillstart. When I say ABS and brake warning lights I mean the little red ones in a circle, one says ABS the other has a exclaimation mark in a triangle. They go out and don't come back on when the key is removed from the ignition, until the next hillstart scenario. I changed the front pads and bled the fronts last week and everything feels fine under braking. Didn't touch the back at all. Anyone any thoughts?