2026-07-22

Drive Unit - Front (Remove and Replace)

Correction code 3901049112 FRT 3.66 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and FRT listed above 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. NOTE: See Personal Protection to make sure you are wearing proper PPE when performing the procedure below. NOTE: See Ergonomic Precautions for safe and healthy working practices.

  • 2026-05-01: Added tool list.
  • 2024-07-29: Updated Toolbox routine.
Equipment:
  • 1498673-00-A KIT, CABLE AXLE REMOVER, MS/MX/M3
  • 1130279-00-A Lifting Sling, Drive Unit, Model 3 (NA, APAC)
  • 1099645-99-D FIXTURE, SUBFRAME, MODEL 3/Y CYBERTRUCK
  • 1066521-00-A Powertrain Table
  • 1081765-00-A 3/4 TON UNDERHOIST STAND
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Cybertruck electronics are powered by a 48V "mid voltage" or "MV" architecture that is designed to improve efficiency. Servicing MV components requires extra knowledge and care in order to avoid personal and/or vehicular harm. Read and understand MV precautions in Electrical Precautions and make sure any required MV-related training courses have been completed, as applicable.
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 glove and safety information.

Install

  1. Install the front drive unit assembly. See Drive Unit - Front (Remove and Install).
  2. Connect a laptop with Toolbox 3 to the vehicle. See Toolbox 3 (Connect and Disconnect).
  3. In Toolbox, click the Dashboards tab, and then search for "Drive Unit".
  4. Click PROC_PMF_X_WRITE-DRIVE-TYPEvia Service Mode Plus:Drive Unit ➜ Front Drive Unit Replacement ➜ Write Drive Typevia Toolbox:(link), click Run, and allow the routine to complete.
  5. On the vehicle touchscreen, navigate to Service Mode UI > Software Reinstall > Reinstall to reinstall the vehicle software.
    Informational PurposesAn informational icon, calling your attention
    Note
    The installation will begin immediately.
  6. Re-establish vehicle connection to Toolbox 3.
  7. In Toolbox, click the Dashboards tab, and then search for "Drive Unit".
  8. Click PROC_DI_X_PAIR-IMMOBILIZER-AND-VEHICLE-ODOMETERvia Service Mode Plus:
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Immobilizer/ODO Pairing
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Pair Immobilizer and Vehicle Odometer
    via Toolbox:(link)    , click Run, and allow the routine to complete.
  9. Disconnect Toolbox and remove the laptop from the vehicle. See Toolbox 3 (Connect and Disconnect).
  10. Exit Service mode. See Service Mode.
  11. Remove the vehicle from the lift. See Raise Vehicle - 2 Post Lift.
  12. Raise the LH front window and close the LH front door.
  13. Review wheel alignment requirements and add correction code as needed.