2026-09-10

열 교환기 - 후륜 구동장치(4DU)(탈거 및 교체)

교정 코드 40305232 0.72 메모: 절차에서 명시적으로 언급하지 않는 한 교정 코드 및 해당 관련 FRT는 연결된 절차를 포함하여 이 절차를 수행하는 데 필요한 모든 작업을 반영합니다. 명시적으로 지시하지 않는 한 교정 코드를 누적하지 마십시오. 참고: FRT와 그 생성 방법에 대한 자세한 내용은 표준 정비 작업시간을 참조하십시오. 메모: 아래 절차를 수행할 때 개인 보호을(를) 참조하여 적절한 PPE를 착용했는지 확인하십시오. 메모: 안전하고 건강한 작업 사례는 인체공학적 주의 사항의 내용을 참조하십시오.

  • 2026-09-01: Removed steps to disconnect/connect the LV power and added oil pump low pressure test routine.
  • 2024-01-10: Corrected spellings of "exchanger".
경고
이 절차는 초안입니다. 따라서 검증은 되었지만 경고 및 주의 사항이 누락되었을 수 있습니다. 고전압 시스템 및 구성 요소에서 또는 그 근처에서 작업하는 경우에는 안전 요구 사항을 준수하고 최고 수준의 주의를 기울여야 합니다.

탈거

  1. Move the vehicle to a 2 post lift. See 차량 올리기 - 2 포스트 리프트.
  2. Open the LH front door and raise the LH front window.
  3. Enable Service Mode on the touchscreen. See 정비 모드.
  4. Unlock the vehicle gateway. See 게이트웨이(잠금 해제).
  5. Access the thermal system routines on the touchscreen: Touch Quick Controls > Service Mode > Diagnostics > Thermal.
    참고
    Authorize routines by holding the turn signal stalk full up (right hand turn) while applying brake with the key in the vehicle.
  6. Touch Start Thermal Fill Drain (Coolant Only) on the touchscreen.
    참고
    Touch the X at the top left of window to close once completed.
    참고
    Verify the indicator displays green and the vehicle is ready for the coolant fill/drain.
    참고
    Thermal "Fill Drain" routine has a 5 hour time limit. After 5 hours, the routine must be performed again.
  7. Remove the rear underhood apron. See 후드 내 에이프런 - 후면(탈거 및 교체).
  8. Remove the HEPA filter assembly. See 어셈블리 - 필터 - HEPA(탈거 및 교체).
  9. Remove the HEPA duct. See 덕트 - HEPA(탈거 및 교체).
  10. Remove the rear aero shield panel. See 패널 - 에어로 실드 - 후면(탈거 및 교체).
  11. Drain the gearbox fluid from the rear drive unit. See 기어박스 오일 - 후륜 구동 장치(4DU)(배출 및 보충).
  12. Position the coolant drain collector underneath the RH rear of the HV battery.
  13. Release the clip that attaches the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger.
  14. Release the clip, disconnect the rear drive unit inverter to heat exchanger hose from the rear drive unit heat exchanger, immediately plug the heat exchanger fitting, allow the hose to drain, and then plug the hose fitting.
  15. Release the clip that attaches the rear drive unit outlet hose to the rear drive unit heat exchanger.
  16. Release the clip, disconnect the rear drive unit outlet hose from the rear drive unit heat exchanger, and then immediately plug both fittings.
    참고
    Coolant loss greater than 1 L will require a vacuum fill.
  17. Remove the bolts (x2) that attach the rear drive unit heat exchanger to the rear drive unit, and then remove the heat exchanger from the drive unit.
    참고
    Use of the following tool(s) is recommended:
    • 4 in extension
    • External Torx Plus EP10
    • Ratchet/torque wrench
    참고
    Confirm that the O-rings (x2) are not stuck in the rear drive unit.

장착

  1. Apply a light coat of KAF1 oil to the O-rings of the heat exchanger, and then wipe away any excess oil.
  2. Install the rear drive unit heat exchanger onto the rear drive unit, and then install the bolts (x2) that attach the heat exchanger to the drive unit.
    5 Nm (3.7 lbs-ft) +30 deg
  3. Remove the plugs from the fittings, immediately connect the rear drive unit outlet hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  4. Fasten the clip that attaches the rear drive unit outlet hose to the rear drive unit heat exchanger.
  5. Remove the plugs from the fittings, immediately connect the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  6. Fasten the clip that attaches the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger.
  7. Remove the coolant drain collector from under the vehicle.
  8. Refill the rear drive unit with gearbox fluid. See 기어박스 오일 - 후륜 구동 장치(4DU)(배출 및 보충).
  9. Install the mid aero shield panel. See 패널 - 에어로 실드 - 후면(탈거 및 교체).
  10. Lower the vehicle fully.
  11. Connect a laptop with Toolbox to the vehicle. SeeToolbox(연결 및 연결 해제).
  12. Perform the routine: TEST-SELF_DIR_X_OIL-PUMP-PRESSUREvia Toolbox:(link)
  13. Disconnect the laptop from the vehicle. SeeToolbox(연결 및 연결 해제).
  14. Remove the cap from the coolant bottle.
  15. Inspect the coolant level and add coolant as necessary to bring the fluid level to the Max line.
    참고
    If greater than 1 L of coolant was lost during repair, a vacuum fill is required.
  16. On the vehicle touchscreen, go to Service Mode > Thermal > Stop Thermal Fill/Drain, touch Run and allow the routine to complete.
  17. On the vehicle touchscreen, go to Thermal > Coolant System > Coolant Purge Start, touch Run and wait for the routine to complete (10 minutes).
  18. Add coolant to the reservoir as necessary, and install the reservoir cap.
  19. Install the HEPA duct. See 덕트 - HEPA(탈거 및 교체).
  20. Install the HEPA filter assembly. See 어셈블리 - 필터 - HEPA(탈거 및 교체).
  21. Install the rear underhood apron. See 후드 내 에이프런 - 후면(탈거 및 교체).
  22. Disable Service Mode. See 정비 모드.
  23. Raise the LH front window and close the LH front door.
  24. Remove the vehicle from the 2 post lift. See 차량 올리기 - 2 포스트 리프트.