Dynamic Stability Control System: Notes

The E90 in the U.S. is equipped with a new Dynamic Stability Control System (DSC) referred to as MK60E5, manufactured by Continental Teves, which builds upon the systems used in other BMW models. With this system several new functions are introduced that result in significantly improved comfort during brake intervention (due to utilization of a PWM signal on the input control valves) and more precise wheel braking.

New functions introduced with MK60E5:

• Fading Support
• Braking Readiness
• Brake Disk drying
• Soft Stop
• Start Assist
• Electronic Control Brake Actuation (ECBA)
• Yaw Moment Compensation with AFS

These new functions contribute to increased directional stability, optimized comfort, enhanced system availability/response plus reduce the minimum braking distance.

In the MK60E5 the designation "E5" represents the 5 pressure sensors which are integrated into the hydraulic control unit:

• A combined pressure sensor on the inlet side which monitors the plausibility of the pressures of the tandem brake master cylinder (THZ)
• Four further sensors on the outlet side which measure the braking pressure of the assigned wheel brake

The new functions available on the MK60E5 DSC system are a result of the following additional components:

• Solenoid valves with variable map for flow rate - utilizes a PWM signal
• 5 brake pressure sensors integrated in the new DSC module
• 4 active wheel-speed sensors with direction of rotation detection
• 1 longitudinal-acceleration sensor on the circuit board of the DSC control module
• DSC sensor taken with redundant signals on vehicles with Active Steering (2x rate of yaw, 2x lateral acceleration)