Most injuries cause focal brain damage, damage confined to a small area of the brain. The focal damage is most often at the point where the head hits an object or where an object, such as a bullet, enters the brain. In addition to focal damage, closed head injuries frequently cause diffuse brain injuries or damage to several other areas of the brain.
As the wheel speed sensor is located very close to the braking system, the high heat generated by the brakes cause the wheel speed sensor to be more susceptible to damage. This in turn makes it one of the more common causes of the ABS light coming on. Unresponsive Hydraulic Pump or Valve.
Usually a car with ABS performs a self test, so as soon as you switch on the ignition, the ABS warning light goes on (to show you that the light is still alive), the onboard computer performs the test, and the light goes off again. If the light refuses to go off or if it lights up during the ride, something with your ABS system is out of order. The usual consequence: As soon as the computer detects any faults in the ABS system, ABS is disabled. That means that you still have ordinary brakes but no protection against wheel lockup.