2008 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE

VDC Control Module and Hydraulic Control Unit (VDCCM&H/U): Replacement

CAUTION:
  • Because the pressure sensor built into the H/U is easily damaged by static electricity, start the operation after performing static electricity measures.
  • Be careful not to touch the sensors in the H/U to prevent damage.
  • Because the seal of the VDCCM cannot be replaced, do not pull or peel it by lifting it up.
  • Because the screw of the H/U will become slightly worn in every replacement procedure, 5 times is the maximum number of times for replacement. If a problem is found such as not being able to torque the screw to specifications even before 5 replacement operations are performed, replace the H/U body.
  • When installing the VDCCM, always use new screws.
  • When the sealing surface of the VDCCM or H/U is dirty or damaged and it cannot be cleaned or repaired, replace with a new part.
  1. Remove the VDCCM&H/U. <Ref. to REMOVAL , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U) .>
  2. To prevent entry of foreign objects and brake fluid leakage, plug the oil pressure port of the VDCCM&H/U using a screw plug, etc.
  3. Set the pump motor section of the removed VDCCM&H/U face down on a vise.
    NOTE: Before securing a part in a vise, place cushioning material such as wood blocks, aluminum plate or cloth between the part and the vise.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.