24/08/2020 16:07:48

A/C Refrigerant Flush Due To Compressor Failure (Standard HVAC) (NA)

Correction Code 18208022

Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
To avoid personal injury, eye protection must be worn while using compressed air.
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Warning
Wear appropriate Personal Protective Equipment (PPE), including nitrile gloves, safety glasses, and a face shield, when working with refrigerants and other A/C related fluids. For more information, see A/C Refrigerant Recovery and Recharge (Remove and Replace).
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Warning
Perform this procedure in a well-ventilated area.
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Warning
Store opened and unspent solvent containers in a flammables cabinet.
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Warning
Dispose of used solvent in an oil waste container. Use a funnel and full PPE during disposal.

Special tools required for this procedure:

Supplier Part Number Description
Tesla 1526195-00-A Robinair 17580 AC Flush Machine
Tesla 1492019-00-A Kit, AC Flush Adapters
Tesla 1526197-00-A Replaceable Filter
Tesla 1527940-00-A Kit, A/C Flush Solvent – Johnsens 6544 1-Gal
1065131-00-A KIT, BATTERY COOLANT DRAIN & FILL
1120026-00-A AC SERVICE MACHINE, ROBINAIR, 34988NI (North America, Asia Pacific)
1120026-01-A AC SERVICE MACHINE, WAECO, ASC5500RPA (Europe, Middle East, Africa)

Remove

  1. Remove the wiper motor assembly. See Wiper Module (LHD) (Remove and Replace) .
  2. Remove the HEPA filter. See Filter - HEPA (Remove and Replace).
  3. Remove the 12V auxiliary battery cage from the vehicle, but do not remove the battery from the cage. See Cage - Battery - Auxiliary - 12V (Remove and Replace) .
  4. Remove the A/C compressor. See Compressor (Remove and Replace).
    Informational PurposesAn informational icon, calling your attention
    Note
    After checking for high voltage in the electrical isolation procedure, do not reinstall any components.

Remove Desiccant Bag

  1. Remove the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace) .
  2. Remove the skid plate chin spoiler. See Skid Plate Chin Spoiler (Remove and Replace) .
  3. Remove the desiccant bag, and then install the flush plug from the A/C flush adapter kit on the condenser. See Receiver Dryer and Desiccant (Remove and Replace).
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    Note
    Do not install a new desiccant bag at this time.
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    Note
    If the flush plug supplied in the kit is red-colored, secure the plug with the old snap ring.
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    Note
    If the flush plug supplied in the kit is white-colored, screw the plug into the condenser until the wing nut makes contact with the condenser; do not install the old snap ring.
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    Note
    A new desiccant plug and snap ring will be installed at the end of this procedure.
    Figure 1. Red-colored desiccant plug from A/C flush adapter kit and old snap ring installed
    Figure 2. White-colored desiccant plug from A/C flush adapter kit installed

Remove Front TXV Valve

  1. Release the clip that attaches the front TXV electrical harness to the vehicle, and then disconnect the electrical connector from the front TXV.
  2. Remove the bolts that attach the front TXV to the front HVAC assembly.
  3. Inspect the front TXV to front HVAC assembly o-rings (x2) and if they're damaged, replace them.
  4. Remove the bolt that attaches the A/C lines to the front TXV, and then remove the TXV from the vehicle.
  5. Inspect the A/C lines to front TXV o-rings (x2), and if they're damaged, replace them.

Remove EXV Valve

  1. Remove the nut that attaches the A/C lines to the EXV, and then remove the A/C lines from the EXV.
  2. Inspect the A/C lines to EXV o-rings (x2), and if they're damaged, replace them.
  3. Remove the bolts that attach the EXV to the chiller, and then remove the EXV from the vehicle.
  4. Release the locking tab, and then disconnect the electrical connector from the EXV.
  5. Inspect the EXV to chiller o-rings (x2) and if they're damaged, replace them.

Flush A/C System

  1. Inspect the low pressure A/C compressor line o-ring and if it's damaged, replace it.
    Tip: The low pressure line is thicker than the high pressure line.
  2. Position the flush adapter on the low pressure A/C compressor line, and then install the nut that attaches the line to the adapter (torque 10 Nm).
  3. Inspect the high pressure A/C compressor line o-ring and if it's damaged, replace it.
    Tip: The high pressure line is thinner than the low pressure line.
  4. Position the flush adapter on the high pressure A/C compressor line, and then install the nut that attaches the line to the adapter (torque 10 Nm).
  5. Position the EXV adapter on the chiller, and then install the bolts that attach the adapter to the chiller (torque 6 Nm).
  6. Position the EXV A/C lines on the EXV adapter, and then install the nut that attaches the lines to the adapter (torque 12 Nm)
  7. Position the front TXV A/C lines on the TXV flush adapter, and then install the bolt that attaches the lines to the adapter (torque 6 Nm).
  8. Position the TXV flush adapter on the front HVAC assembly, and then install the bolts that attach the adapter to the HVAC assembly (torque 6 Nm).
  9. If present, remove the old filter from the flush machine.
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    Note
    Wear appropriate Personal Protective Equipment (PPE)
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    Note
    Make sure to also remove the old filter gasket.
  10. Lubricate the new filter gasket, and then hand-tighten the filter on the flush machine.
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    CAUTION
    Do not overtighten the filter.
  11. Set the "Selection Valve" to the "OFF" position.
  12. Connect the ground wire to the flush machine ground terminal.
  13. Connect the shop air line to the flush machine "Air Inlet" port.
  14. Connect the flush machine "Return Hose" to the flush adapter on the high pressure A/C compressor line.
  15. Connect the flush machine "Discharge Hose" to the flush adapter on the low pressure A/C compressor line.
  16. Use a flexible funnel to add solvent to the flush machine until it is full, as indicated by the fill indicator on the side of the machine.
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    Note
    Do not fill the flush machine outdoors or near floor drainage.
  17. Close the "Air Agitation" valve by turning it completely clockwise.
  18. Set the "Filter Valve" to the "FILTER" position.
  19. Set the "Selection Valve" to the "FLUSH" position and let the flush run for 1 hour.
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    Note
    Do not leave the machine unattended while it is flushing.
  20. As the machine is flushing, check all connections for leaks, and add solvent if the machine pump runs dry.
  21. After 1 hour has elapsed, turn the "Air Agitation" knob counter-clockwise 1 full turn and let the air agitation run for 10 minutes.
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    Note
    Do not leave the machine unattended while it is agitating.
  22. After 10 minutes have elapsed, set the "Selection Valve" to the "OFF" position and close the "Air Agitation" valve by turning it completely clockwise.
  23. Wait for 1 minute, and then slowly set the "Selection Valve" to the "PURGE" position.
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    Note
    Do not leave the machine unattended while waiting.
  24. Let the purge run for 5 minutes.
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    Note
    Do not leave the machine unattended while it is purging.
  25. After 5 minutes have elapsed, set the "Filter Valve" to the "BYPASS" position.
  26. Let the purge run for another 2 hours.
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    Note
    Do not leave the machine unattended while it is purging.
  27. After 2 hours have elapsed, slowly set the "Selection Valve" to the "OFF" position.
  28. Disconnect the flush machine hoses from the flush adapters on the low and high pressure A/C compressor lines.
  29. Remove the nut that attaches flush adapter to the low pressure A/C compressor line, and then remove the adapter.
  30. Remove the nut that attaches flush adapter to the high pressure A/C compressor line, and then remove the adapter.
  31. Disconnect the ground wire from the flush machine ground terminal.
  32. Remove the bolts that attach the TXV flush adapter to the front HVAC assembly.
  33. Remove the bolt that attaches the front TXV A/C lines to the TXV flush adapter, and then remove the adapter.
  34. Remove the nut that attaches the EXV A/C lines to the EXV adapter.
  35. Remove the bolts that attach the EXV adapter to the chiller, and then remove the adapter.

Install EXV Valve

  1. Install the components that were removed to access the charger, but do not reconnect 12V power yet. See Vehicle HV Disablement Procedure .
  2. Install new O-rings (x2) on the chiller to EXV ports.
  3. Position the new EXV on the chiller, and then install the bolts that attach the EXV to the chiller (torque 6 Nm).
  4. Install new O-rings (x2) on the A/C lines to the EXV.
  5. Position the A/C lines on the EXV, and then install the nut that attaches the A/C lines to the EXV (torque 12 Nm).
  6. Connect the electrical connector to the EXV, and then engage the locking tab.

Install Front TXV Valve

  1. Install new O-rings (x2) on the A/C lines to the front TXV.
  2. Position the new front TXV on the A/C lines, and then install the bolt that attaches the A/C lines to the TXV (torque 20 Nm).
  3. Install new O-rings (x2) on the front HVAC to front TXV assembly.
  4. Position the front TXV on the front HVAC assembly, and then install the bolts that attach the TXV to the HVAC assembly (torque 6 Nm).
  5. Connect the electrical connector to the front TXV, and then install the clip that attaches the harness to the vehicle.

Install A/C Compressor and Reinstall Other Components

  1. Install the new A/C compressor, and then reinstall the coolant reservoir and air suspension reservoir. See Compressor (Remove and Replace).
  2. Position the wiper motor assembly in the vehicle, and then install the bolts that attach the motor to the vehicle (torque 9 Nm).
  3. Position the HEPA filter duct in the vehicle, and then install the clip that attaches the duct to the vehicle.
  4. Install the 12V auxiliary battery cage and battery, and then connect 12V power. See Cage - Battery - Auxiliary - 12V (Remove and Replace) .
  5. Perform an A/C refrigerant leak detection test. See A/C Refrigerant Leak Detection .
  6. Install the wiper motor assembly. See Wiper Module (LHD) (Remove and Replace) .
  7. Install the HEPA filter. See Filter - HEPA (Remove and Replace).
  8. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace) .
  9. After the A/C refrigerant leak detection test is complete, refill the A/C system with refrigerant. See A/C Refrigerant Recovery and Recharge (Remove and Replace) .
  10. Install all underhood aprons. See Assembly - Underhood Apron - Front (Remove and Replace) .
  11. Touch and hold the CALIBRATE button on the Model X touchscreen until the rear doors have been fully calibrated, close completely, and the message "CALIBRATION COMPLETE" is displayed.
  12. Disconnect the laptop and install the cubby under the touchscreen.