2024-04-01

Valve Body - EXV - Supermanifold (Heat Pump) (Remove and Replace)

Correction code 18401302 1.44 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. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

  • 2023-04-04: Updated A/C oil type to be used with reference to Fluids and Capacities for A/C oil specifications.

This procedure is to remove and replace any of the electronic expansion valves.

Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
This procedure is a DRAFT. Although it has been validated, Warnings and Cautions might be missing. Follow safety requirements and use extreme caution when working on or near High Voltage systems and components. Provide corrections and feedback to ServiceDevelopment@teslamotors.com.

Remove

  1. Set up AC machine
  2. Open LH front door
  3. Lower LH front window
  4. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  5. Connect to vehicle using Toolbox 3.0
  6. Select "Actions/Autodiag" and search for "Thermal"
  7. Select "Start Thermal Fluid Fill/Drain (Refrigerant only)", click Run and allow routine to complete
    Informational PurposesAn informational icon, calling your attention
    Note
    Select "X" at top right of window to close once complete, Thermal Fluid Fill/Drain routine has a 5 hour time limit, After 5 hours EXV's will close and routine must be performed again, Verify EXV positions are open VIA Garage >Thermal > Refrigerant loop EXV, Verify LCC, CC Left, Evap, CC Right, Chiller are all at ~100%. Recirc is at ~20%, LCC Solenoid is OPENED
  8. Remove HSD cable from Ethernet port to disconnect Toolbox 3.0 from vehicle
  9. Disconnect 12V power. See 12V/LV Power (Disconnect and Connect).
  10. Remove caps from low side and high side AC ports
    Informational PurposesAn informational icon, calling your attention
    Note
    2x caps
  11. Connect hoses to vehicle and perform A/C recovery
    Informational PurposesAn informational icon, calling your attention
    Note
    Connect couplers to vehicle, Open couplers by turning clockwise, Open Machine valves, Note the amount of refrigerant and oil recovered, If drained oil level increased more than 30 mL refer to drained oil loss chart
  12. Remove the bolt that attaches the supermanifold-to-compressor A/C line to the supermanifold.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 13 mm socket
    • Flex head ratchet/flex head torque wrench
    • 6 in extension
  13. Remove the supermanifold-to-compressor A/C line from the supermanifold, and then hang it on the underhood storage unit support beam using an s-hook.
    Informational PurposesAn informational icon, calling your attention
    Note
    Carefully hang the line so that oil does not drip out.
  14. Release the connector locks, and then disconnect the electrical connectors leading up to the desired EXV. Follow the disconnect order in the example image.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    DO NOT push down on the red locking tab. Pull the tab away from the connector until the connector is unlocked, and then continue pulling to release the connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    The disconnect order is for ease of access.
    Figure 1. Disconnect order
  15. Release the locking tab, and then disconnect the electrical connector from the desired EXV.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    DO NOT push down on the red locking tab. Pull the tab away from the connector until the connector is unlocked, and then continue pulling to release the connector.
    Figure 2. Evap EXV shown
  16. Remove the supermanifold harness from the supermanifold.
  17. Use a pick to pull the locking tab downward, and then pull toward the front of the vehicle to remove the EXV coil.
  18. Remove the EXV valve body from the supermanifold.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 1588745-00-A - Expansion Valve Socket, 28mm, 1/2" Drive
    • 6 in extension
    • Flex head ratchet/flex head torque wrench

Install

  1. Lubricate the EXV threads and O-rings with the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications. Then hand-start the valve into the supermanifold.
  2. Fully torque the EXV on the supermanifold.
    19 Nm (14.0 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 1588745-00-A - Expansion Valve Socket, 28mm, 1/2" Drive
    • 6 in extension
    • Flex head ratchet/flex head torque wrench
  3. Install the EXV coil onto the EXV.
    Informational PurposesAn informational icon, calling your attention
    Note
    Align the locking tab on the connector assembly with the recess in the EXV.
  4. Connect the electrical connectors that were disconnected during removal, and then engage the connector locks.
  5. Install new seal washers on the supermanifold side of the supermanifold-to-compressor A/C line, and then lubricate the washers with a small amount of the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications..
  6. Position the supermanifold-to-compressor A/C line on the supermanifold, and then hand tighten the bolt that attaches the A/C line to the supermanifold.
  7. Tighten the bolt that attaches the A/C line to the supermanifold.
    22 Nm (16.2 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 13 mm socket
    • Flex head ratchet/flex head torque wrench
    • 6 in extension
  8. Perform AC vacuum test
    Informational PurposesAn informational icon, calling your attention
    Note
    2 minute vacuum leak test, 15 minute vacuum
  9. Remove low side AC hose from supermanifold to HVAC AC line assembly
  10. Use oil injector to add measured amount of oil back to the system
    Informational PurposesAn informational icon, calling your attention
    Note
    Use calculated oil lost measurement and add the new, appropriate A/C oil into the system. See Fluids and Capacities for A/C oil specifications. If more than 30 ml was drained out during recovery, refer to the drained oil loss chart.
  11. Install low side AC hose to supermanifold to HVAC AC line assembly
  12. Perform AC refrigerant refill
    Informational PurposesAn informational icon, calling your attention
    Note
    Recharge refrigerant to 1.02 kg (1020g). For Robinair AC machines press ESC to NOT ACCEPT the step to clear out residual oil. Once complete, press next to start the End of Charge process.
  13. Perform step 1 for End of Charge process
    Informational PurposesAn informational icon, calling your attention
    Note
    Close high and low machine valves, Press next to continue
  14. Connect 12V power. See 12V/LV Power (Disconnect and Connect).
  15. Connect to vehicle using Toolbox 3.0
  16. Select "Actions/Autodiag" and search for "commissioning"
  17. Select TEST-SELF_VCFRONT_X_HEAT-PUMP-COMMISSIONINGvia Toolbox: (link)via Service Mode: Thermal ➜ Refrigerant System ➜ Run Heat Pump Commissioningvia Service Mode Plus: Drive Inverter ➜ Front Drive Inverter Replacement ➜ Heatpump commissioning, click Run and allow routine to complete
    Informational PurposesAn informational icon, calling your attention
    Note
    If this routine is not run after entering Thermal Drain/Fill mode, the AC compressor operation will be blocked, Select "X" at top right of window to close once complete
  18. Proceed with steps 2-4 for End of Charge process and follow instructions displayed on AC Machine
    Informational PurposesAn informational icon, calling your attention
    Note
    Turn AC on, Temp setting LO, Panel mode on, Fresh air mode on, Blower speed set to 3, Verify Discharge pressure does not exceed 26 bar and Suction pressure is not below 1.15 bar, Turn AC OFF, allow pressures to stabilize and remove high side hose
  19. Proceed with steps 5-6 for End of Charge process and follow instructions displayed on AC Machine
    Informational PurposesAn informational icon, calling your attention
    Note
    Turn AC on, Temp setting LO, Panel mode on, Fresh air mode on, Blower speed set to 3, Turn machine valves to OPEN, Allow pressures to stabilize, Remove low side hose from vehicle, Continue with AC machine instructions and clear AC hoses
  20. Install caps onto AC ports
    Informational PurposesAn informational icon, calling your attention
    Note
    2x caps
  21. Select "Actions/Autodiag" and search for "Thermal"
  22. Select TEST-SELF_VCFRONT_X_THERMAL-PERFORMANCEvia Toolbox: (link)via Service Mode: Thermal ➜ Actions ➜ Test Thermal Performancevia Service Mode Plus:
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Thermal System Test
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Thermal System Test
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Thermal System Test
    , click "Run", and allow routine to complete
    Informational PurposesAn informational icon, calling your attention
    Note
    Select "X" at top right of window to close once complete
  23. Remove HSD cable from Ethernet port to disconnect Toolbox 3.0 from vehicle
  24. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).