ABS on the other hand is the system that aims at providing vehicle steerability, directional stability and enhance optimum deceleration during braking on varied road surfaces and sever conditions by comparing the rotation of each wheel, and applying hydraulic pressure to the brake to prevent wheel locking. This system has a hydraulic electronic control unit, actuator assembly with electric hydraulic pump and solenoid valves, and a computer to control hydraulic line pressure on the basis of the information obtained by the wheel speed sensors. In this system, the emission of electrical signals is done by speed sensors present at every wheel; the front ones are bolted to the steering knuckles while the rear ones are fastened to the suspension trailing arms. The EBD or the electronic brake booster control smart warnings indicate that the ABS needs attention; the basic quick checks include brake fluid levels, secure connections of the wires, check fuses and wiring harness. If the problems do not resolve, then it is important to get an expert opinion and carry out fixing in order to eliminate the problems. For the removal of wheel speed sensors, one has to first unlock the lug nuts, lift the car, then disconnect the electrical connector for the sensor, then remove the bolt holding the sensor in place and finally get the sensor out of your vehicle carefully and conversely for installation of the wheel speed sensors one removes the nut of the bolt holding the sensor and places the electrical connector correctly and the nut of the bolt appropriately tight as possible.