Tesla Model 3: Ski - Center Rail - HV Battery (Dual Motor)-Remove

SPECIAL TOOLS

Lever Lock, HV Connector, Model 3 (1140311-00-A)

Warning:

Only technicians who have been trained in High Voltage Awareness are permitted to perform this procedure. Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn at all times a high voltage cable, busbar, or fitting is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.

Remove

1. Perform the vehicle electrical isolation procedure. See Vehicle Electrical Isolation Procedure.
2. Remove the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).

3. Remove the bolt that attaches the front drive unit HV harness to the front drive unit.

4. Slide the red release tab to unlock the front drive unit HV harness connector.

5. Slowly unlatch the release handle on the front drive unit HV harness connector, and then disconnect the connector from the front drive unit.

Caution:

Do not apply excessive force to the handle; doing so could damage the connector alignment tabs.

6. Remove the front HV battery skid plate. See Skid Plate - HV Battery - Front (Remove and Replace).

7. Disconnect the PTC heater HV electrical harness, and then remove the PTC heater HV electrical harness from the connector bracket.

8. Disconnect the A/C compressor HV electrical harness, and then remove the A/C compressor HV electrical harness from the connector bracket.
9. Position a coolant drain under the LH front of the HV battery.

10. Release the clip, disconnect the HV battery RH supply manifold from the HV battery LH supply manifold, and then immediately plug the male and female fittings.

11. Release the clips that attach the PTC heater and A/C compressor electrical harness bracket to the front of the HV battery, and then separate the bracket from the battery.
12. Remove the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).

13. Release the clips that attach the RH inner HV battery return hose to the HV battery.
14. Position the coolant drain under the RH rear of the HV battery.

15. Release the clip, and then disconnect the RH inner HV battery return hose fitting from the RH end of the HV battery platter enclosure.
16. Quickly plug both the male and female fittings.
17. Remove the coolant drain from under the vehicle.

18. Remove the nuts that attach the rear drive unit HV electrical harness bracket to the HV battery.

19. Release the locking tab of the rear drive unit HV electrical harness.

20. Raise the handle, and them disconnect the rear drive unit HV electrical harness from the HV battery connector.

21. Release the locking tab, raise the handle, and then disconnect the PTC heater and A/C compressor electrical harness from the HV battery connector.

22. Release the clips that attach the PTC heater and A/C compressor electrical harness cover to the rear of the HV battery.

23. With an assistant, remove the bolts that attach the center rail ski to the HV battery.
24. Remove the center rail ski from the vehicle.

25. Remove the cap cover at the front of the HV battery center rail ski.

26. Remove the cap cover at the rear of the HV battery center rail ski.

27. Remove the HV battery to front drive unit harness from the center of the HV battery center rail ski.

28. Remove the PTC heater and A/C compressor electrical harnesses from the sides of the HV battery center rail ski.

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