Tesla Model 3: Harness - 12V Battery Ground (Remove and Replace)

Harness - 12V Battery Ground-Remove

Remove

1. Remove the cowl screen panel. See Panel - Cowl Screen (Remove and Replace).

2. Remove and discard the nut that attaches the front harness ground wire to the 12V battery ground harness, and remove the wire from the harness.
3. Remove the 12V auxiliary battery. See Battery - 12V (Remove and Replace).
4. Remove the 12V battery bracket. See Bracket - 12V Battery (RWD) (Remove and Replace).

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

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

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

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

9. Remove and discard the bolt that attaches the battery ground cable to the front body controller module, and then remove the cable.

Harness - 12V Battery Ground-Install

Install

1. Install the battery ground cable to the front body controller module, and then install a new bolt to attach the cable to the module. Torque 8.5 Nm

2. Visually inspect that 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.

3. 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

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

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

6. 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
7. Install the 12V battery bracket. See Bracket - 12V Battery (RWD) (Remove and Replace).
8. Install the 12V auxiliary battery. See Battery - 12V (Remove and Replace).

9. Install the front harness ground wire to the 12V battery ground harness, and install a new nut to attach the ground wire to the ground harness. Torque 6 Nm
10. Install the cowl screen panel. See Panel - Cowl Screen (Remove and Replace).