Hydraulic Control Unit (HCU)
WARNING: This page is about a different car, the 2021 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
The HCU contains the solenoid valves, the hydraulic pump motor and the pressure sensor used by the ABS module for the various stability control systems. The ABS module and the HCU are attached directly together. The HCU is available separately for service.