Control Module/Hydraulic Unit

The control module used on the DSC III systems varies between models. The DSC III 5.3 system uses the same control module configuration at the ASC + T5 system.

The control module is an 83 pin unit located in the E-box.

The DSC III 5.7 system integrates the control module into the hydraulic unit. This reduces the size and wiring required for DSC operation. Additionally the motor relay and valve relay have been replaced by solid state final stages in the control module.

Fig 1: Identifying DSC III 5.3 Control Module

Courtesy of BMW OF NORTH AMERICA, INC.

On E39 and E39 applications, the control module/hydraulic unit is located ahead of the passenger side strut tower. The hydraulic unit contains the following components:

• Two pre-charge solenoid valves
• Two changeover solenoid valves
• Four intake solenoid valves
• Four outlet solenoid valves
• One return pump
  Fig 2: Identifying Bosch DSC III 5.7 Control Module/Hydraulic Unit

  Courtesy of BMW OF NORTH AMERICA, INC.