2024-12-24

HV Harness - Rear Drive Unit (3DU) (Remove and Replace)

Correction code TBD FRT 0.72 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

Torque Specifications

Table 1. Torque Specifications: HV Harness - Rear Drive Unit (3DU) (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Nut that attaches the RDU HV cable bracket to the HV battery
10 Nm (7.4 lbs-ft)
  • 10 mm deep socket
 Reuse
Bolt that attaches the RDU HV cable bracket to the RDU
10 Nm (7.4 lbs-ft)
  • Insulated 10 mm 12-point deep socket
 Reuse

Remove

  1. Place the vehicle on the 2-post lift.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Ensure the vehicle is not charging.
  2. Perform the vehicle HV disablement procedure. See Vehicle HV Disablement Procedure.
  3. Remove the HV battery rear skid plate. See High Voltage Battery Assembly - Skid Plate - Rear (Remove and Replace).
  4. Inspect the HV insulating gloves.
  5. Put on the HV insulating gloves and the leather over gloves.
  6. Remove the nut that attaches the RDU (rear drive unit) HV cable bracket to the HV battery.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 10 mm deep socket
  7. Disconnect the RDU HV cable from the HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release the locking tab and rotate the release lever up to disengage the connector. Do not force the release lever up. Ensure the alignment tabs on the RDU header are not damaged.
  8. Remove the bolt that attaches the RDU HV cable bracket to the RDU.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 10 mm 12-point deep socket
  9. Release the RDU HV harness connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release the locking tab and rotate the release lever up to disengage the connector. Do not force the release lever up. Ensure the alignment tabs on the RDU header are not damaged.
  10. Remove the RDU HV harness from the RDU and rear subframe assembly.
    Informational PurposesAn informational icon, calling your attention
    Note
    Rotate and route the cable between the subframe and rear drive unit assembly and the battery. Don't forcefully pull the RDU hose.

Install

  1. Route the RDU HV harness between the subframe and rear drive unit assembly and the battery, and then rotate it into the connection position.
    Informational PurposesAn informational icon, calling your attention
    Note
    Don't forcefully pull the RDU hose.
  2. Connect the RDU HV cable to the HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the connector lock is 90 degrees from the connector before connecting.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use one hand to support the connector while the other latching the locking tab. Once installed, verify that the latch is not damaged and is fully secured in the latched position.
  3. Install the nut that attaches the RDU (rear drive unit) HV cable bracket to the HV battery.
    10 Nm (7.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 10 mm deep socket
  4. Connect the RDU HV harness to the RDU.
    Informational PurposesAn informational icon, calling your attention
    Note
    Install the HV connector lever lock to the RDU HV cable connector. Align the connector to the RDU, and then remove the HV connector lever lock before fully latching the connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use one hand to support the connector while the other latching the locking tab. Once installed, verify that the latch is not damaged and is fully secured in the latched position.
  5. Install the bolt that attaches the RDU HV cable bracket to the RDU.
    10 Nm (7.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 10 mm 12-point deep socket
  6. Remove the HV insulating gloves.
  7. Install the HV battery rear skid plate. See High Voltage Battery Assembly - Skid Plate - Rear (Remove and Replace).
  8. Connect the LV battery power. See LV Power (Disconnect and Connect).
  9. Install the 2nd row seat cushion. See 2nd Row Seat Cushion (Remove and Replace).
  10. Remove the vehicle from the lift.