Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Busbar - DCDC Ground (Remove and Replace)

Tesla Model 3 2017-2025 Service Manual / Electrical / Harnesses / Busbar - DCDC Ground (Remove and Replace)

Busbar - DCDC Ground (Remove and Replace)

Remove

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

Busbar - DCDC Ground (Remove and Replace)

  1. Remove and discard the nut that attaches the DCDC ground busbar to the HV battery at the DCDC passthrough.

Busbar - DCDC Ground (Remove and Replace)

  1. Remove the bolt that attaches the DCDC ground busbar to the body, and then remove the DCDC ground busbar from the vehicle.

Install

  1. Use an IPA wipe to clean the mating surfaces of the DCDC ground busbar and the DCDC passthrough.

Busbar - DCDC Ground (Remove and Replace)

  1. Install the DCDC ground busbar onto the ground terminal of the DCDC passthrough, and then hand-tighten a new nut that attaches the DCDC ground busbar to the DCDC passthrough.

Busbar - DCDC Ground (Remove and Replace)

  1. Install the bolt that attaches the DCDC ground busbar to the body, and mark the bolt with a paint pen after it is torqued. Torque 20 Nm
  2. Tighten the nut that attaches the DCDC ground busbar to the DCDC passthrough, and then mark the nut with a paint pen after it is torqued. Torque 15 Nm
  3. Connect 12V power. See 12V Power (Disconnect and Connect).

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