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Home >> Hyundai >> 2021 >> Sonata SE >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transaxle Control System - 2.5L (Except HEV) >> Transaxle Oil Temperature Sensor >> Repair Procedures >> Removal
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Repair Procedures: Removal

CAUTION:
  • When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
  • Automatic transaxle is composed of delicate components. Be careful not to cause any damage on the component in the course of assembly and disassembly.
  • Maintain clean condition so that foreign substance does not get into the automatic transaxle.
  • Use a coated apron, latex gloves, and stainless tray to prevent foreign substance from getting into the transaxle.
  • Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
  1. Turn ignition switch OFF and disconnect the negative (-) battery cable.
  2. Remove the air duct (A).
    G14630090Courtesy of HYUNDAI MOTOR AMERICA
  3. Remove the air cleaner assembly.
    1. Disconnect the Mass Air Flow Sensor (MAFS) connector (A).
    2. Separate the bleeder hose (B).
    3. Separate the intake hose (C).
    4. Remove the air cleaner assembly (D).

      Tightening torque: 

      Intake hose clamp: 2.9 - 4.9 N.m (0.3 - 0.5 kgf.m, 2.2 - 3.6 lb-ft)

      Air cleaner mounting bolt: 7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb-ft)

    G14630091Courtesy of HYUNDAI MOTOR AMERICA
  4. Loosen the bolt and then removing the wiring bracket (A).
    G14630092Courtesy of HYUNDAI MOTOR AMERICA
  5. Remove the under cover (A).
    G14630093Courtesy of HYUNDAI MOTOR AMERICA
  6. Loosen the drain plug (A) and then drain the coolant. [case by apply ATF warmer]
    G14630094Courtesy of HYUNDAI MOTOR AMERICA
  7. Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.

    Drain plug tightening torque: 

    33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

    G14630095Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Replace the gasket before reinstalling the drain plug.
  8. Remove the ATF warmer. [case by apply ATF warmer] (Refer to Automatic Transaxle Cooling System - "ATF WARMER ")
  9. Loosen the mounting bolts (A) of the valve body cover.

    Tightening torque: 

    11.8-13.7 N.m (1.2-1.4 kgf.m, 8.7-10.1 lb-ft)

    G14630096Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
    CAUTION:
    • Replace the gasket (A) before reinstalling the valve body cover.
    • After the installation, start the engine and then check if there are any leakages from the valve body cover.
    G14630097Courtesy of HYUNDAI MOTOR AMERICA
  10. Loosen the bolts and then removing the main harness (A).

    Tightening torque: 

    9.8-11.8 N.m (1.0-1.2 kgfm, 7.2-8.7 lb-ft)

    G14630098Courtesy of HYUNDAI MOTOR AMERICA
  11. Loosen the bolts and then removing the valve body assembly (A).

    Tightening torque: 

    1. 9.8-11.8 N.m (1.0-1.2 kgfm, 7.2-8.7 lb-ft)
    G14630099Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Attach the manual pin (B) to the detent lever (A) and assemble the valve body.
    G14630100Courtesy of HYUNDAI MOTOR AMERICA
  12. Disconnect the speed sensor connector (A).
    G14630101Courtesy of HYUNDAI MOTOR AMERICA
  13. Disconnect the solenoid valve connector (A).
    G14630102Courtesy of HYUNDAI MOTOR AMERICA
  14. Loosen the bolt and then removing the fixing clip of solenoid valve connector.
    G14630103Courtesy of HYUNDAI MOTOR AMERICA
  15. Push the solenoid valve connector (A) and then removing the connector from the transaxle.
    G14630104Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Replace the O-Ring (A) before reinstalling solenoid valve connector.
    G14630105Courtesy of HYUNDAI MOTOR AMERICA