Tesla Model 3: Module - Body Controller - Front (RWD) (Remove and Replace)

Module - Body Controller - Front (RWD) - Remove

Remove

1. Remove the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
2. Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
3. Remove the cabin intake duct. See Duct - Cabin Intake (Remove and Replace).
4. Remove the hood latch cover. See Cover - Hood Latch (Remove and Replace).
5. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
6. Remove the LH and RH wiper arms. See Wiper Arms (Remove and Replace).
7. Remove the cowl screen panel. See Panel - Cowl Screen (Remove and Replace).
8. Disconnect 12V power. See 12V Power (Disconnect and Connect).
9. Remove the 12V battery strap. See Strap - 12V Battery (Remove and Replace).
10. Remove the 12V auxiliary battery. See Battery - 12V (Remove and Replace).
11. Remove the 12V battery bracket. See Bracket - 12V Battery (RWD) (Remove and Replace).

12. Remove the bolt that attaches the thermal harness cover to the front body controller module, and then remove the cover from the module.

13. Disconnect the thermal harness from the front body controller module connector.

14. Release the clip that attaches the suction / liquid A/C combination lines to the body near the TXV, and then move the electrical harness aside to gain access to the front body controller module.

15. Remove the bolts (x9) that attach the front body controller module cover to the front body controller module, and then remove the cover.

16. Disconnect the electrical harness from the front body controller module connectors (x4).

17. Remove and discard the nuts (x6) and bolt that attach the power and ground cables to the front body controller module.

18. Remove the bolts (x3) that attach the front body controller module to the body.

19. Release the clips (x2) that attach the bottom of the front body controller module to the body, and then remove the lower busbar from the stud.

20. Remove the bolt that attaches the ground strap to the upper rear of the front body controller module, and then remove the ground strap from the module.

21. Remove the bolt that attaches the ground strap to the lower right side of the front body controller module, and then remove the ground strap from the module.

22. Remove the bolt that attaches the ground strap to the lower rear of the front body controller module, and then remove the ground strap from the module.
23. Remove the front body controller module from the vehicle

Module - Body Controller - Front (RWD) - Install

Install

1. Set the front body controller module where it installs into the vehicle, and then tilt the module forward

2. Install the ground strap to the lower rear of the front body controller module, and then install the bolt that attaches the ground strap to the module.  Torque 9 Nm

3. Install the ground strap to the lower right side of the front body controller module, and then install the bolt that attaches the ground strap to the module. Torque 9 Nm

4. Install the ground strap to the upper rear of the front body controller module, and then install the bolt that attaches the ground strap to the module.  Torque 9 Nm

5. Slide the busbar onto the lower stud, and then fasten the electrical harness clips (x2) to the bottom of the front body controller module.

6. Install the bolts (x3) that attach the front body controller module to the body. Torque 10 Nm Torque 10 Nm

7. Install new nuts (x6) and new bolt to attach the power and ground cables to the front body controller module. Torque 8.5 Nm Torque 8.5 Nm

Note: Make sure that the terminal lugs fit in their channels neatly

8. Connect the electrical harness to the front body controller module connectors (x4).

9. Visually inspect that the power and the ground cables exit the front body controller module neatly in their respective channels, and parallel to each other.

Caution:

Make sure that no cables or wires will be pinched when the front body controller module cover is installed.

10. Install the front body controller module cover to the front body controller module, and then install the bolts (x9) that attach the cover to the module.  Torque 6 Nm

11. Connect the thermal harness to the front body controller module connector.

12. Fasten the clip that attaches the suction/liquid lines to the body near the TXV.

13. Install the thermal harness cover to the front body controller module, and then install the bolt that attaches the cover to the module.  Torque 6 Nm
14. Install the 12V battery bracket. See Bracket - 12V Battery (RWD) (Remove and Replace).
15. Install the 12V auxiliary battery. See Battery - 12V (Remove and Replace).
16. Install the 12V battery strap. See Strap - 12V Battery (Remove and Replace).
17. Connect 12V power. See 12V Power (Disconnect and Connect).
18. Connect a laptop with Toolbox to the vehicle.
19. Use Toolbox to update the vehicle firmware.
20. In Toolbox, click the play button next to the "TESTRESET_ VCFRONT" and select Run,
21. Disconnect the laptop from the vehicle.
22. Install the cowl screen panel. See Panel - Cowl Screen (Remove and Replace).
23. Install the LH and RH wiper arms. See Wiper Arms (Remove and Replace).
24. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
25. Install the hood latch cover. See Cover - Hood Latch (Remove and Replace).
26. Install the cabin intake duct. See Duct - Cabin Intake (Remove and Replace).
27. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
28. Install the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).