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Home › Hyundai › 2018 › Sonata Plug-In Hybrid › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transaxle System (PHEV) › Automatic Transaxle › Repair Procedures › Removal

Repair Procedures: Removal

WARNING: Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
  1. Remove the under cover. (Refer to "ENGINE ROOM UNDER COVER ")
  2. Drain the engine coolant. (Refer to "COOLANT ")
  3. Drain the coolant of motor cooling system. (Refer to "COOLANT ")
  4. Remove the engine cover(A).
  5. Remove the air cleaner assembly and air duct (B). (Refer to "AIR CLEANER ")
  6. Remove the Hybrid Power Control Unit (HPCU) assembly(C).

    (Refer to "HPCU ")

    G12793347Courtesy of HYUNDAI MOTOR AMERICA
  7. Disconnect the high voltage cable mounting clips(A) and bracket(B).
    G12793348Courtesy of HYUNDAI MOTOR AMERICA
  8. Remove the Hybrid Power Control Unit(HPCU) tray(A).

    Tightening torque: 

    8.8 ~ 13.7 N.m (0.9 ~ 1.4 kgf.m, 6.5 ~ 10.1 lb-ft)

    G12793349Courtesy of HYUNDAI MOTOR AMERICA
  9. Disconnect the solenoid valve connector (B) and inhibitor switch connector (A).
    G12793350Courtesy of HYUNDAI MOTOR AMERICA
  10. Remove the shift cable (C) after removing the nut (A) and the bolts (B).

    Tightening torque: 

    1. 7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)
    2. 14.7 ~ 21.6 N.m (1.5 ~ 2.2 kgf.m, 10.9 ~ 15.9 lb-ft)
    G12793351Courtesy of HYUNDAI MOTOR AMERICA
  11. Remove the ground line after removing the bolt(A).
    G12793352Courtesy of HYUNDAI MOTOR AMERICA
  12. Remove the heater protector mounting bolt(A).
    G12793353Courtesy of HYUNDAI MOTOR AMERICA
  13. Remove the ATF warmer hose(A).
    G12793354Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Carefully install the clamp to prevent damage to the hose.
    • Install the clamp in a correct direction not to be interfered with other parts.
    • After the installation, start the engine and then check if there are any leaks from the hose.
  14. Disconnect the high voltage connector(A) of drive motor.
    G12793355Courtesy of HYUNDAI MOTOR AMERICA
    NOTE: Disconnect method of the connector 
    1. Pull the lever (A) in the direction of the arrow.
      G12793356Courtesy of HYUNDAI MOTOR AMERICA
    2. Press the lever (B), and then pull the connector by rotating the lever(C).
      G12793357Courtesy of HYUNDAI MOTOR AMERICA
  15. Disconnect the Electric Oil Pump (EOP) connector(A).
    G12793358Courtesy of HYUNDAI MOTOR AMERICA
  16. Remove the Clutch Pressure Sensor (CPS) connector(A).
    G12793359Courtesy of HYUNDAI MOTOR AMERICA
  17. Assemble the engine support fixture (Support SST No.:09200-2S000, Beam SST No.:09200-3N000) (Refer to "SPECIAL SERVICE TOOLS ")
  18. Using the engine support fixture assembly, hold the engine and transaxle assembly safely.
    NOTE: * SST No. 09200-38001 model also can be used for removing the transaxle.
    G12793360Courtesy of HYUNDAI MOTOR AMERICA
  19. Remove the cover (A).
    G12793361Courtesy of HYUNDAI MOTOR AMERICA
  20. Remove the automatic transaxle support bracket mounting bolt (A).

    Tightening torque: 

    88.2 ~ 107.8 N.m (9.0 ~ 11.0 Kgf.m, 65 ~ 79.5 lb-ft)

    G12793362Courtesy of HYUNDAI MOTOR AMERICA
  21. Remove the automatic transaxle mounting support bracket (A).

    Tightening torque: 

    1. 58.8 ~ 78.4 N.m (6.0 ~ 8.0 kgf.m, 43.3 ~ 57.8 lb-ft)
    G12793363Courtesy of HYUNDAI MOTOR AMERICA
  22. Remove the automatic transaxle upper mounting bolt (A-2ea).

    Tightening torque: 

    1. 42.2 ~ 54.0 N.m (4.3 ~5.5 kgf.m, 31.1 ~ 39.8 lb-ft)
    G12793364Courtesy of HYUNDAI MOTOR AMERICA
  23. Remove the sub frame. (Refer to "SUB FRAME ")
  24. Remove the drive shaft assembly. (Refer to "FRONT DRIVESHAFT ")
  25. Press the lock, and then disconnect the sensor connector(A).
    G12793365Courtesy of HYUNDAI MOTOR AMERICA
  26. Disconnect the wiring mounting clip(A).
    G12793366Courtesy of HYUNDAI MOTOR AMERICA
  27. Disconnect the Electric Oil Pump (EOP) connector (A) and mounting clip(B).
    G12793367Courtesy of HYUNDAI MOTOR AMERICA
    NOTE: Disconnect method of the connector 
    1. Pull the lever(A).
    2. Press the hook(B), and then pulling the cable connector.
      G12793368Courtesy of HYUNDAI MOTOR AMERICA
    3. Using the screw driver, raise the hook(C), and then pull the cable connector.
      G12793369Courtesy of HYUNDAI MOTOR AMERICA
  28. Remove the automatic transaxle with a jack after removing the mounting bolts (A, B).

    Tightening torque: 

    42.2 ~ 48.1 N.m (4.3 ~ 4.9 kgf.m, 31.1 ~ 35.4 lb-ft)

    G12793370Courtesy of HYUNDAI MOTOR AMERICA
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