DSC For The X5 Introduction
The X5 is equipped with DSC III for its stability control system. The components are the same as the DSC III system (version 5.7) currently installed in the E38/E39 vehicles. However the software and programming are changed to allow for new functions associated with all wheel drive and off-road use.
New/changed functions of the DSC III include
- New Hill Decent Control (HDC) function
- New Differential Brake Control (ABD) function
- Changed traction control function
- Changed ABS function
DSC - X5 Overview
The DSC system for the X5 provides all of the functions and features of the DSC III system currently in the E38/E39 vehicles. these functions/features include
- Maintaining traction under all driving conditions
- Maintaining the directional Control (Longitudinal Stability)
- Providing Lateral Stability (Correction for oversteer/understeer)
- Providing Corner Braking Control (CBC)
- Providing Dynamic Braking System features of - Dynamic Braking Control and Maximum Braking Control (DBC and MBC)
- Providing Electronic Brake Proportioning (EBV)
Operation
The values for the decel rate are programmed in the DSC control module. Equal force will be applied to the front and rear axles until the threshold values are exceeded. At this point, the DSC control module will cycle the inlet valves at the rear calipers to reduce the braking force on the rear axle.