2025-03-12

High Voltage Harness Rear Drive Unit (Remove and Replace)

Correction code 4450010602 FRT 0.66 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.

  • 1140311-00-A Lever Lock, HV Connector, Model 3
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning

Only technicians who have been trained in High Voltage Awareness and have completed all required certification courses (if applicable) are permitted to perform this procedure. Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn at all times a high voltage cable, busbar, or fitting is handled. Refer to Tech Note TN-15-92-003, High Voltage Awareness Care Points for additional safety information.

Torque Specifications

Table 1. Torque Specifications: High Voltage Harness Rear Drive Unit (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Bolt securing RDU HV cable bracket to RDU
10 Nm (7.4 lbs-ft)
  • Insulated tools:
    • Ratchet/torque wrench
    • 10 mm deep socket
  • Electrical Protective Gloves
 Reuse
Nut securing RDU HV cable bracket to HV battery
10 Nm (7.4 lbs-ft)
  • Insulated tools:
    • 10 mm deep socket
  • DRIVER KIT, 1/4" HEX, M12
 Reuse

Remove

  1. Remove the HV battery rear skid plate enclosure. See High Voltage Battery Assembly - Skid Plate - Rear (Remove and Replace).
  2. Inspect HV insulating glove, and put on HV insulating gloves and leather over gloves.
  3. Remove nut securing rear drive unit HV cable bracket to HV battery.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated tools:
      • 10 mm deep socket
    • DRIVER KIT, 1/4" HEX, M12
  4. Disconnect rear drive unit HV cable from HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release locking tab and rotate the release lever up to disengage the connector, do not force the release lever up, and ensure the alignment tabs on the RDU header are not damaged.
  5. Remove bolt securing rear drive unit HV cable bracket to rear drive unit.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated tools:
      • Ratchet/torque wrench
      • 10 mm deep socket
    • Electrical Protective Gloves
  6. Release rear drive unit inverter inlet tube from rear drive unit HV cable harness.
  7. Release rear drive unit HV harness connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release locking tab and rotate the release lever back to disengage the connector.
  8. Remove rear drive unit HV harness.
    Informational PurposesAn informational icon, calling your attention
    Note
    Rotate and route cable between subframe, rear drive unit and battery, don't forcefully pull rear drive unit hose.

Install

  1. Routine the rear drive unit HV harness.
  2. Connect the rear drive unit HV harness connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure that locking tab is securely locked in place.
  3. Secure rear drive unit inverter inlet tube to rear drive unit HV cable harness.
  4. Install bolt securing rear drive unit HV cable bracket to rear drive unit.
    10 Nm (7.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated tools:
      • Ratchet/torque wrench
      • 10 mm deep socket
    • Electrical Protective Gloves
  5. Connect rear drive unit HV cable to HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release locking tab and rotate the release lever up to disengage the connector, do not force the release lever up, and ensure the alignment tabs on the RDU header are not damaged.
  6. Install nut securing rear drive unit HV cable bracket to HV battery.
    10 Nm (7.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated tools:
      • 10 mm deep socket
    • DRIVER KIT, 1/4" HEX, M12
  7. Install the HV battery rear skid plate enclosure. See High Voltage Battery Assembly - Skid Plate - Rear (Remove and Replace).
  8. In Toolbox 3.0, click Actions/Autodiag, type "Purge" into the search field, click TEST_VCFRONT_X_THERMAL-COOLANT-AIR-PURGE, click Run, and allow the routine to complete.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure vehicle is not in Drive, shifting the vehicle into Drive will stop this routine. The test will last approximately 10 mins. The test will vary speeds from 3500-6500 RPM (idle speed = ~1500 RPM) and actuate the valve between series and parallel. If speed hovers at 7000 RPM, it indicates the pump is air locked, perform the vacuum fill again. Continue to add coolant and purge until the coolant level reaches between the NOM and MAX Lines on the bottle.
  9. Inspect the coolant level and top off as necessary, and then install the coolant bottle cap.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure that the coolant level is at the "Max" line.