The purpose of the Bosch 5.3 Antilock Brake System (ABS) is to minimize wheel slip during heavy braking. The Bosch 5.3 performs this function by monitoring the speed of each wheel and controlling the brake fluid pressure to each wheel independently during a braking event. This allows the driver to retain directional stability and better steering capability.

The Enhanced Traction System (ETS) and Traction Control System (TCS) (If equipped) also monitors front wheel speed and compares the speed to the speed of the rear wheel. If excessive front wheel speed is detected in either front wheels the TCS will be activated.