I know this problems have cropped up in various forms but I can't find a problem like mine . Basically my large brake warning light comes on and flashes and beeps 3 times but not that often and not generally when cold but from time to time when engine is at running temp and sometimes when cold but only now and again. It doesn't seem lazy on startup and the fluid is full and all pads are fine and new on front.the old front ones were worn past the sensors and I don't know if I needed to reset anything? But I can't think what else it is brakes are working fine.