2025-10-29

ECU – Trailer Hitch (Remove and Replace)

Correction code 12302102 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 ServiceManualFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure. See Ergonomic Precautions for safe and healthy working practices.

Torque Specifications

Table 1. Torque Specifications: ECU – Trailer Hitch (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Trailer hitch ECU to trailer hitch assembly stud
6 Nm (4.4 lbs-ft)
  • 10 mm deep socket
  • ¼ in std ratchet
  • ¼ in torque wrench (installation only)
Reuse

Remove

  1. Remove the rear fascia. See Fascia - Rear (Remove and Install).
  2. Disconnect the trailer hitch jumper harness and body harness electrical connectors from the trailer hitch ECU.
  3. Using a 10 mm deep socket, remove the nut that attaches the trailer hitch ECU to the stud on the trailer hitch assembly.
  4. Remove the trailer hitch ECU from the trailer hitch assembly.

Install

  1. Move the trailer hitch ECU into place so that the stud on the trailer hitch assembly goes through the hole in the ECU. Install the nut that attaches the trailer hitch ECU to the stud on the trailer hitch assembly.
    6 Nm (4.4 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 10 mm deep socket
    • ¼ in std ratchet
    • ¼ in torque wrench (installation only)
  2. Connect the trailer hitch jumper harness and body harness electrical connectors to the trailer hitch ECU.
  3. Install the rear fascia. See Fascia - Rear (Remove and Install).
  4. Reinstall the vehicle software. See Software Reinstall - Touchscreen