2026-05-19

Telematics Control Unit (TCU) (Model Y Standard) (Remove and Replace)

Correction code 21350100002 FRT 0.36 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.

  • 2026-05-19: Added steps to reinstall TCU software and run ODIN routine PROC_ICE_X_DUAL-BOOTSTRAP-E-SIM.
  • 2026-03-06: Removed unnecessary step to unlock Gateway.

Remove

  1. Remove the LH and RH upper C-pillar trims. See Trim - C-Pillar - Upper - RH (Model Y Standard) (Remove and Install)
  2. Release clips (x4) that attach the rear section of the headliner to the body, allow it to droop, and pull it down as needed to access the TCU.
  3. Release the datum and remove the bolts (x2) that attach the TCU to the body, and then remove the TCU from the vehicle.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Socket 1/4in Dr. 6pt. Deep x 13mm
  4. Release the hook that attaches the electrical harness to the TCU, and then release the connector locks, and then disconnect the electrical connectors (x2) from the TCU.

Install

  1. Connect the electrical connectors (x2) to the TCU, and then install the hook that attaches the electrical harness to the TCU.
  2. Align the datum to position the TCU onto the vehicle, and then install the bolts (x2) that attach the TCU to the body.
    14 Nm (10.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Socket 1/4in Dr. 6pt. Deep x 13mm
  3. Secure the clips (x4) that attach the rear section of the headliner to the body and seat the liftgate seal over the edge of the headliner.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure all clips are fully seated.
  4. Install the LH and RH upper C-pillar trims. See Trim - C-Pillar - Upper - RH (Model Y Standard) (Remove and Install)
  5. Connect a laptop with Toolbox 3 to the vehicle. See Toolbox (Connect and Disconnect).
  6. Use the touchscreen to reinstall the TCU software.
    Informational PurposesAn informational icon, calling your attention
    Note
    Touch Controls > Software Reinstall, select TCU, and then touch Reinstall.
  7. Use Toolbox 3 to run ODIN routine PROC_ICE_X_DUAL-BOOTSTRAP-E-SIMvia Toolbox:(link).
  8. Disconnect the laptop from the vehicle.
  9. Exit Service Mode.