Tesla Model 3: TXV Valve - Evaporator (Remove and Replace)

TXV Valve - Evaporator- Remove

Remove

1. Disconnect 12V power. See 12V Power (Disconnect and Connect).
2. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
3. Recover the A/C refrigerant. See A/C Refrigerant (Recovery and Recharge).

Note: The following steps can be performed while the refrigerant is recovered.

4. Remove the inner HVAC plenum duct. See Duct - HVAC Plenum - Inner (Remove and Replace).
5. Remove the cover for the 12V positive terminal.

6. Loosen the nut that attaches the positive harness to the battery, and then remove the harness from the battery.

7. Release the clip that attaches the suction/liquid lines to the electrical harness near the TXV.

8. Disconnect the electrical harness from the TXV valve connector.

9. After the refrigerant has been fully recovered, remove the nut that attaches the suction/liquid lines fitting to the TXV valve, and then remove the fitting from the TXV valve.
10. Remove and discard the o-rings (x2) from the suction/liquid lines fitting.

11. Remove the bolts that attach the TXV valve to the HVAC module, and then remove the TXV valve from the HVAC module.
12. Remove and discard the o-rings (x2) from the HVAC module.

TXV Valve - Evaporator - Install

Install

1. Install new o-rings (x2) onto the HVAC module.
2. Install the TXV valve onto the HVAC module, and then install the bolts that attach the TXV valve to the HVAC module. Torque 7.2 Nm
3. Install new o-rings (x2) onto the suction/liquid lines fitting.

4. Install the suction/liquid lines fitting into the TXV valve, and then install the nut that attaches the suction/liquid lines fitting to the TXV valve. Torque 22 Nm
5. Perform the A/C refrigerant recharge concurrently with the remainder of this procedure. See A/C Refrigerant (Recovery and Recharge).

6. Connect the electrical harness to the TXV valve connector.

7. Fasten the clip that attaches the suction/liquid lines to the electrical harness near the TXV.

8. Install the positive harness onto the battery, and tighten the nut that attaches the positive harness to the battery. Torque 6 Nm
9. Install the cover for the 12V positive terminal.
10. Install the inner HVAC plenum duct. See Duct - HVAC Plenum - Inner (Remove and Replace).
11. Connect 12V power. See 12V Power (Disconnect and Connect).

Note: Do not install the rear apron at this time.

12. After the A/C refrigerant recharge has fully completed, verify the operation of the A/C system.
13. Connect a charging cable to the vehicle.
14. Use Toolbox to perform a Thermal System Performance Test.
15. After successful completion of the test, disconnect the charging cable.
16. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).