2025-04-03

FRONT DRIVE UNIT - 3DU (Remove and Replace)

Correction code 3901020502 FRT 3.05 3 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.

Remove

  1. Move the vehicle to a 2 post lift. See Raise Vehicle - 2 Stands.
  2. Enable Service Mode Plus. See Service Mode Plus.
  3. Select Service Mode Plus- High VoltageProcedures.
  4. Click Front Drive Unit Replacement, from the Before Front Drive Unit Replacement Action List, click Start Thermal Fluid Fill/Drain (Coolant only), click Run, and then allow the routine to complete.
  5. Disconnect the laptop with Toolbox 3 from the vehicle.
    Informational PurposesAn informational icon, calling your attention
    Note
    Do not close this instance of Toolbox 3 as it is needed later on in the procedure.
  6. Disconnect LV power. See LV Power (Disconnect and Connect).
  7. Perform Vehicle HV Disablement Procedure. See Vehicle HV Disablement Procedure.
  8. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  9. Remove the air intake duct. See Duct - Air Intake (Remove and Replace).
  10. Remove the front lightbar assembly. See Lightbar - Front (Remove and Install).
  11. Remove the front LH and RH fender garnishes. Fender Garnish - Front - LH (Remove and Replace).
  12. Remove the front LH and RH wheels. See Wheel Assembly (Remove and Install).
  13. Remove the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).
  14. Remove the front fascia. See FRONT FASCIA (Remove and Replace).
  15. Lower the front subframe and drive unit. See FRONT SUBFRAME (Remove and Replace).
  16. Position fluid catcher under subframe and fixture assembly.
  17. Remove FDU inverter to oil cooler hose and inverter inlet hose.
  18. Remove fluid catcher from under subframe and fixture assembly.
  19. Disconnect FDU inverter logic connector and remove harness clips.
  20. Disconnect resolver logic connector and remove harness clip.
  21. Disconnect FDU oil pump connector.
  22. Position the front subframe assembly under gantry.
  23. Secure drive unit sling onto the FDU.
  24. Secure drive unit sling to gantry.
  25. Raise sling so there is slight tension on the cables.
  26. Separate LH and RH halfshaft from FDU.
  27. Raise gantry and lift FDU out of subframe.
  28. Lower FDU onto appropriate surface.
  29. Release drive unit sling from FDU but leave attached to gantry hook.

Install

  1. Position new FDU and crate underneath gantry.
  2. Release protective covers from new FDU and transfer them onto old drive unit.
  3. Move the gantry to the new front drive unit.
  4. Secure drive unit sling onto FDU。
  5. Raise the gantry hook to put tension on the sling.
  6. Lower the FDU into the front subframe.
  7. Loosely install bolt securing front motor mount to front subframe.
    Informational PurposesAn informational icon, calling your attention
    Note
    1x bolt, 18mm, 80 Nm, Gently adjust FDU position is helpful to install bolt, Torque at later step
  8. Install LH and RH halfshaft into FDU.
  9. Lower sling to relieve tension on the cables.
  10. Remove drive unit sling from the FDU.
  11. Connect FDU oil pump connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    1x connector, Engage locking tab
  12. Connect resolver logic connector and secure harness clip.
  13. Connect FDU inverter logic connector and secure FDU harness clips.
  14. Install FDU inverter inlet hose and inverter to oil cooler hose.
  15. Position lifting tool and subframe and FDU assembly to under vehicle for installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    Recommend assistance, Align installation position
  16. Install the front subframe and drive unit. See FRONT SUBFRAME (Remove and Replace).
  17. Install the front fascia. See FRONT FASCIA (Remove and Replace).
  18. Install the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).
  19. Install the front LH and RH wheels. See Wheel Assembly (Remove and Install).
  20. Install the front LH and RH fender garnishes. Fender Garnish - Front - LH (Remove and Replace).
  21. Install the front lightbar assembly. See Lightbar - Front (Remove and Install).
  22. Perform a cooling system vacuum refill. See Cooling System - Vacuum Refill.
  23. Connect LV power. See LV Power (Disconnect and Connect).
  24. Connect the laptop with Toolbox 3.
  25. In Toolbox 3, from the After Front Drive Unit Replacement Action List, click Stop Thermal Fluid Fill/Drain, click Run, and then allow the routine to complete.
  26. From the After Front Drive Unit Replacement Action List, click CAN Redeploy, click Run, and then allow the routine to complete.
  27. From the After Front Drive Unit Replacement Action List, click Coolant Air Purge, click RUN, and then allow the routine to complete.
  28. From the After Front Drive Unit Replacement Action List, click Thermal System Performance Test, click Run, and then allow the routine to complete.
  29. Inspect the coolant level and top up if necessary. See Cooling System (Partial Refill and Bleed) (Modify).
  30. Disconnect the laptop with Toolbox 3 from the vehicle.
  31. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  32. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  33. For China, Japan and Korea only: Carefully remove the old motor label from the hood, and install a new motor label to match the new motor information.
  34. Remove the vehicle from the 2 post lift. See Raise Vehicle - 2 Stands.
  35. Check the vehicle wheel alignment, and adjust if necessary. See .