ANTI – LOCK BREAKING SYSTEM [ABS]
An anti-lock braking system (ABS) is a system on motor vehicles which prevents the wheels from locking while braking. The purpose of this is to allow the driver to maintain steering control under heavy braking and, in some situations, to shorten braking distances (by allowing the driver to hit the brake fully without the fear of skidding or loss of control). Disadvantages of the system include increased braking distances under certain conditions and the creation of a "false sense of security" among drivers who do not understand the operation and limitations of ABS. ABS has made considerable progress. Recent versions not only handle the ABS function itself (i.e. preventing wheel locking) but also traction control, brake assist, and electronic stability control, amongst others.
Emergency brake is on or you have a serious drop in hydraulic pressure. Your brakes may be near total failure.
Sticking brakes, hot wheels or engine that seems to have lost power. Brakes may be failing to release; the condition can reverse itself, leaving you with no brakes at all.
"Touchy" brakes that grab with the least pressure.May indicate a problem as simple as grease or oil contaminated lining - or as serious as a loose or broken components ready to fail in an emergency.