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

Remove
- Disconnect 12V power. See
12V Power (Disconnect and Connect).
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- Remove and discard the nut that attaches the DCDC ground busbar to the
HV battery at the DCDC passthrough.
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- Remove the bolt that attaches the DCDC ground busbar to the body, and
then remove the DCDC ground busbar from the vehicle.
Install
- Use an IPA wipe to clean the mating surfaces of the DCDC ground busbar
and the DCDC passthrough.
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- 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.
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- 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
- 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
- Connect 12V power. See
12V Power (Disconnect and Connect).
READ NEXT:
Remove
Remove the cowl screen panel. See
Panel - Cowl Screen (Remove and Replace).
Remove and discard the nut that attaches the front harness ground wire
to the 12V battery ground harness,
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
SEE MORE:
Remove
Open all the doors.
Lower all the windows.
Remove the 2nd row lower seat cushion.
Remove the rear underhood apron.
Remove the cabin intake duct.
Remove the underhood storage unit
Disconnect the 12V power.
Remove the 12V auxiliary battery.
Support the A/C compressor from below.
Install
Install the bolts that attach the secondary hood latch actuator to the
front end carrier.
Torque 5 Nm
Connect the electrical connector to the secondary hood latch actuator.
Install the clip that attaches the secondary hood latch actuator to the
front end carrier.