2017 Kia Optima Plug-In Hybrid EXFACTORY OEM SERVICE PROCEDURE

Repair Procedures: Replacement

NOTE: It is not recommended to replace the VFS type solenoid valve on its own. If a VFS type solenoid valve needs to be replaced, the valve body assembly should be replaced and the oil pressure should be adjusted.
As oil pressure adjustment is impossible without separate equipment, and shift shock or delay may occur, the valve body assembly needs to be replaced in case of failure of VFS type solenoid valve.
  1. Replace the valve body assembly.

    (Refer to Hydraulic System - "VALVE BODY ")

Factory Service Tools

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When to See a Mechanic

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

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

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