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Control Unit/Hydraulic Unit

The MK60 control unit/hydraulic unit is located in the engine compartment on the left side under the brake master cylinder.

Both the control unit and the hydraulic unit are replaceable as separate components.

The pre-charge pump used on previous systems is no longer required. Rapid pressure build up is possible because of the close proximity of the hydraulic unit to the master cylinder and improvements in the design of the return pump.

The control unit/hydraulic unit itself is 20% smaller and lighter than the previous MK20 EI.

Fig 1: Locating MK60 Control Unit/Hydraulic Unit
G03396097Courtesy of BMW OF NORTH AMERICA, INC.

All processing functions for ABS, ASC or DSC are performed by the combined control unit/hydraulic unit. The MK 60 control unit is also responsible for processing the wheel speed signals and providing them to other control units.

The MK60 control unit for MY 2002 incorporates the RDW function into its scope of control, making a separate RDW control unit unnecessary. The operating principle continues to be based on the analysis of wheel speed.

Fig 2: Identifying MK60 Control Unit/Hydraulic Unit
G03396098Courtesy of BMW OF NORTH AMERICA, INC.