Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Harness - HV Battery to Rear Drive Unit (Remove and Replace)

Tesla Model 3 2017-2025 Service Manual / High Voltage System / HV Harnesses / Harness - HV Battery to Rear Drive Unit (Remove and Replace)

Harness - HV Battery to Rear Drive Unit - Remove

SPECIAL TOOLS

Lever Lock, HV Connector, Model 3 (1140311-00-A)

Remove

  1. Remove the rear subframe assembly. See Subframe Assembly - Rear (Remove and Install).

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Disconnect the electrical harness from the inverter low voltage connector.

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Release the clip that attaches the low voltage electrical harness to the inverter.

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Release the clip, disconnect the rear drive unit inlet hose from the inverter coolant inlet, and then plug the inlet.

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Release the clip that attaches the rear drive unit inlet hose to the HV harness bracket, and then remove the hose from the rear drive unit.

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Remove the bolt that attaches the HV harness bracket to the inverter.

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Slide the release to unlock the HV harness connector.

  Harness - HV Battery to Rear Drive Unit - Remove

  1. Lift the handle on HV harness connector, disconnect the harness from the inverter connector, and then remove the harness from the rear drive unit.

Harness - HV Battery to Rear Drive Unit - Install

Install

  1. Fully raise the handle on the rear drive unit HV electrical harness.

  Harness - HV Battery to Rear Drive Unit - Install

  1. Attach the HV connector lever lock onto the back of the HV electrical harness.
  2. Firmly connect the HV electrical harness to the inverter connector.

Caution: Make sure that the harness fits the connector squarely and tightly.

  1. While pressing the harness to the connector, remove the HV connector lever lock.

  Harness - HV Battery to Rear Drive Unit - Install

  1. While pressing the harness to the connector, fully lower the handle.

  Harness - HV Battery to Rear Drive Unit - Install

  1. Slide the release to lock the HV electrical harness.

  Harness - HV Battery to Rear Drive Unit - Install

  1. Install the bolt that attaches the HV harness bracket to the inverter. Torque 6 Nm

  Harness - HV Battery to Rear Drive Unit - Install

  1. Connect the rear drive unit inlet hose to the inverter coolant inlet, and then fasten the clip.

  Harness - HV Battery to Rear Drive Unit - Install

  1. Fasten the clip that attaches the rear drive unit inlet hose to the HV harness bracket.

  Harness - HV Battery to Rear Drive Unit - Install

  1. Connect the electrical harness to the inverter low voltage connector.

  Harness - HV Battery to Rear Drive Unit - Install

  1. Fasten the clip that attaches the low voltage electrical harness to the inverter.
  2. Install the rear subframe assembly. See Subframe Assembly - Rear (Remove and Install)

    READ NEXT:

     External Charging Connectors

    Mobile Connector Firmware Update - CHAdeMO Charging Adapter CAN Setup Connect the USB-CAN dongle to a laptop that is equipped with Toolbox Connect the CHAdeMO CAN programming connector to the USB-CAN

    SEE MORE:

     Trim - Side Rail - LH (Remove and Replace)

    Remove Remove the LH side rail trim. See Trim - Side Rail - LH (Remove and Install). Release the clips that attach the old LH side rail tethers to the LH side rail, and then remove and discard the tethers from the vehicle. Install If not pre-installed, install new push clips (x

     End Cap - Air Wave - LH (Remove and Replace)

    Remove Remove the LH instrument panel end cap. See End Cap - Instrument Panel - LH (Remove and Replace). Release the clips that attach the LH air wave end cap to the main instrument panel decor trim, and then remove the cap from the vehicle. Install Installation procedure is the re

    © 2019-2025 Copyright www.tmodel3.com