Tesla Model 3: Chiller and EXV Assembly (Remove and Replace)

Chiller and EXV Assembly- Remove

Remove

1. Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
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: Recover the refrigerant while continuing this procedure.

4. Disconnect 12V power. See 12V Power (Disconnect and Connect).

5. Disconnect the electrical harness from the coolant temperature sensor connector.
6. Release the clip that attaches the electrical harness to the chiller and EXV assembly hose, and then remove the electrical harness from the hose.

7. Release the clip that attaches the battery vent hose to the chiller and EXV assembly hose, and then remove the battery vent hose from the chiller and EXV assembly hose.
8. Place a coolant drain under the chiller and EXV assembly, and absorbent material under the chiller and EXV assembly hose fitting.

9. Release the clip that attaches the coolant hose to the chiller and EXV assembly, and then remove the hose from the chiller and EXV assembly.
10. Immediately install plugs into the male and female fittings of the chiller and EXV assembly and hose to prevent further coolant loss.

11. Disconnect the electrical harness from the chiller and EXV assembly connector.

12. Disconnect the electrical harness from the low pressure transducer connector.

13. Remove the bolt that attaches the suction/liquid line bracket to the shock tower brace, and then separate the bracket from the brace.

Note: Make sure that the refrigerant has fully recovered before continuing this procedure.

1. Remove the bolt that attaches the suction/liquid line to the chiller and EXV assembly, and then remove the line from the chiller and EXV assembly.
2. Remove and discard the o-rings from the suction/liquid line fitting.

3. Remove the bolts (x3) that attach the chiller and EXV assembly to the superbottle, and then remove the chiller and EXV assembly from the superbottle.

Chiller and EXV Assembly- Install

Installation procedure is the reverse of removal, except for the following:

1. Install the chiller and EXV assembly to the superbottle, and then install the bolts (x3) that attach the chiller and EXV assembly to the superbottle. Torque 15 Nm
2. Install new o-rings onto the suction/liquid line fitting.

3. Install the suction/liquid line fitting into the chiller and EXV assembly, and then install the bolt that attaches the suction/liquid line to the chiller and EXV assembly. Torque 5.5 Nm
4. After installing the assembly, refill the refrigerant. See A/C Refrigerant (Recovery and Recharge).

Note: Perform installation of components removed concurrently with refrigerant refill.

5. Install the suction/liquid line bracket onto the shock tower brace, and then install the bolt that attaches the bracket to the brace. Torque 5.5 Nm

6. Connect the electrical harness to the low pressure transducer connector.

7. Connect the electrical harness to the chiller and EXV assembly connector.

8. Remove the plugs from the male and female fittings of the chiller and EXV assembly and coolant hose, install the coolant hose to the chiller, and then fasten the clip that attaches the hose to the chiller.
9. Remove the absorbent material from under the chiller and EXV assembly hose fitting.

10. Install the battery vent hose to the chiller and EXV assembly hose, and then fasten the clip that attaches the battery vent hose to the chiller and EXV assembly hose.
11. Install the electrical harness to the chiller and EXV assembly hose, and then fasten the clip that attaches the electrical harness to the hose.

12. Connect the electrical harness to the coolant temperature sensor connector.
13. Remove the coolant drain from under the vehicle.
14. Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
15. Connect 12V power. See 12V Power (Disconnect and Connect).

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

16. After the A/C refrigerant recharge has fully completed, verify the operation of the A/C system.
17. Refill the coolant to the proper level. See Cooling System (Check and Fill)
18. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).