Anti-lock brake system controls (ABS) pressure in the hydraulic actuator brakes each wheel individually and reduces the fluid pressure in the wheel brake, the wheel is starting to be blocked.
ABS has the following functions:
Improved steering stability during evasive maneuvers, even during braking.
Reduction of braking distance when heavy braking, while maintaining stability and controllability of the car, even during cornering.
Traction control system is designed to increase traction during acceleration and cornering. The system determines the optimum speed of the wheels and the wheel, which rotates in a given situation will transmitted torque reduction.
Joint control unit (HECU) receives the signals of the vehicle speed, direction and road conditions from sensors in the wheels and the steering column. Based on these signals, the control unit determines the optimum speed of the wheel. Since the system is a variable, the control unit can determine, depending on traffic conditions that a rapid rotation of the wheels is advantageous (thereby increasing linear acceleration) or wheel spin disadvantageous (during cornering).
The system is ready to work automatically whenever the engine is started, but can be turned off manually switch TCS.
EBD (Electronic Brake-force Distribution) EBD additionally used instead of the pressure regulator to perfectly distribute pressure to the front and rear brakes to prevent the rear wheels from locking during heavy braking.