Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Harness - 12V Battery Ground-Remove

Tesla Model 3 2017-2025 Service Manual / Electrical / Harnesses / Harness - 12V Battery Ground (Remove and Replace) / Harness - 12V Battery Ground-Remove

Harness - 12V Battery Ground (Remove and Replace)

Remove

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

Harness - 12V Battery Ground-Remove

  1. 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.
  2. Remove the 12V auxiliary battery. See Battery - 12V (Remove and Replace).
  3. Remove the 12V battery bracket. See Bracket - 12V Battery (RWD) (Remove and Replace).

Harness - 12V Battery Ground-Remove

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

Harness - 12V Battery Ground-Remove

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

Harness - 12V Battery Ground-Remove

  1. 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.

Harness - 12V Battery Ground-Remove

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

Harness - 12V Battery Ground-Remove

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

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     Harness - 12V Battery Ground-Install

    Install 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 Visually inspect that the ground

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     Harness - 12V Battery Positive- Remove

    Remove Remove the cowl screen panel. See Panel - Cowl Screen (Remove and Replace). Remove the 12V auxiliary battery. See Battery - 12V (Remove and Replace). Remove the 12V battery bracket. See

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