Originally Posted by dogpa
What are the wheel sensors?
Most (all?) recent vehicles have wheel speed sensors. These are used by anti-skid / traction control type software to decide when to selectively apply brakes to a wheel to stop it from sliding rather than turning. (Or to slow it's spinning if it's lost traction.)
Anyway, if a sensor or it's connection to the computer fails, the software doesn't know what to do next and gets very unhappy.