2026-02-27

A/C Line - Supermanifold to HVAC (Remove and Replace)

Correction code 18201702 0.42 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure. NOTE: See for safe and healthy working practices.

  • 2024-09-12: Added note on adding correction code for refrigerant - recovery/recharge as a separate activity to the Service Visit.
  • 2024-02-28: Updated the routines.
Informational PurposesAn informational icon, calling your attention
Note
This procedure requires the A/C Refrigerant (Recovery and Recharge) procedure to be performed. If not already automatically added to the Service Visit, add correction code 18200102 as a separate correction within the same activity to the Service Visit.

Torque Specifications

Table 1. Torque Specifications: A/C Line - Supermanifold to HVAC (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Bolts that attach the supermanifold to HVAC A/C line to the HVAC assembly
28 Nm (20.6 lbs-ft)
  • 13 mm socket
 Reuse
Nut that attaches the supermanifold to HVAC A/C line to the supermanifold
36 Nm (26.5 lbs-ft)
  • 13 mm socket
 Reuse

Remove

  1. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  2. Remove the HEPA filter. See .
  3. Recover the A/C refrigerant. See .
  4. Remove the fresh intake duct. See Duct - Fresh Intake (Remove and Replace).
  5. Remove the 12V/LV auxiliary battery. See .
  6. Remove the bolts (x2) that attach the supermanifold to HVAC A/C line to the HVAC assembly.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 13 mm socket
  7. Remove the nut that attaches the supermanifold to HVAC A/C line to the supermanifold.
    Informational PurposesAn informational icon, calling your attention
    TIp
    This nut is behind the supermanifold to compressor A/C line.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 13 mm socket
  8. Release the supermanifold to HVAC A/C line from the supermanifold, and then move the A/C line rearwards and up to remove it.

Install

  1. Position the supermanifold to HVAC A/C line on the supermanifold, inserting the A/C line stud into the stud hole on the supermanifold.
    Informational PurposesAn informational icon, calling your attention
    Note
    Lubricate the new seal washers with the appropriate A/C oil. See for A/C oil specifications.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Reach under the supermanifold to position the A/C line.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Look through the supermanifold stud hole to help locate the A/C line stud.
  2. Install the nut that attaches the supermanifold to HVAC A/C line to the supermanifold.
    36 Nm (26.5 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    This nut is behind the supermanifold to compressor A/C line.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 13 mm socket
  3. Install the bolts (x2) that attach the supermanifold to HVAC A/C line to the HVAC assembly.
    28 Nm (20.6 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 13 mm socket
  4. Begin the vacuum leak test and then return to this procedure. See #TASK_AWW_PQM_TLB.
  5. Install the 12V/LV auxiliary battery. See .
  6. Install the fresh intake duct. See Duct - Fresh Intake (Remove and Replace).
  7. When the vacuum leak test is complete, inject the appropriate amount of oil back into the A/C system. See #TASK_AWW_PQM_TLB.
  8. Recharge the A/C refrigerant. See #TASK_QGF_HNZ_QLB.
  9. Connect 12V/LV power. See 12V/LV Power (Disconnect and Connect).
  10. Unlock the vehicle gateway. See .
  11. On the touchscreen, touch Service Mode > Thermal > Sensors and Valves > Run Heat Pump Commissioning and select Run, and then allow the routine to complete.
  12. Tap Actions > Test Thermal Performance, select Run, and allow the routine to complete.
  13. Tap Actions > Test HVAC Performance, select Run, and allow the routine to complete.
  14. Exit Service Mode. See .
  15. Install the HEPA filter. See .
  16. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).