2024-07-17

Jumper Harness - Trailer Hitch (Remove and Replace)

Correction code 17102012 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 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.

  • 2024-05-16: Added instructions to prevent corrosion on EU trailer sockets.

Torque Specifications

Table 1. Torque Specifications: Jumper Harness - Trailer Hitch (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Trailer hitch jumper harness to bracket on trailer hitch assembly.
2.5 Nm (1.8 lbs-ft)
  • T25 socket
  • 8 mm wrench
 Reuse Install bolts from bottom of the jumper harness

Remove

  1. Remove the rear fascia. See Fascia - Rear (Remove and Install).
  2. Disconnect the trailer hitch jumper harness electrical connector from the trailer hitch ECU.
  3. Carefully use a clip prytool to release the fir tree clip that attaches the trailer hitch jump harness to the trailer hitch assembly.
  4. Remove the bolts (x3) and nuts (x3) that attach the trailer hitch jumper harness to the bracket on the trailer hitch assembly.
    Informational PurposesAn informational icon, calling your attention
    Note
    Remember that the bolts are inserted from the bottom.
  5. Maneuver the jumper harness through the opening in the bracket on the trailer hitch assembly and then remove the trailer hitch jumper harness.

Install

  1. For EU trailer sockets only: Perform these substeps to prevent water ingress.
    1. Cut and remove the fir tree clip from the trailer jumper harness.
    2. Apply tape to the trailer hitch harness, from the trailer socket towards the trailer hitch ECU connector, keeping short overlaps to ensure no gaps are present.
      Informational PurposesAn informational icon, calling your attention
      Note
      Tape the corner of the label, but keep it visible.
    3. Install a new fir tree clip onto the trailer jumper harness at approximately 23 cm (9 in) from the trailer hitch ECU connector, and then trim the excess zip tie.
  2. Maneuver the jumper harness through the opening in the bracket on the trailer hitch assembly.
  3. Connect the trailer hitch jumper harness electrical connector to the trailer hitch ECU.
  4. Maneuver the trailer hitch jumper harness so that the holes are aligned and the adapter cover opens towards the left (outboard).
  5. Insert the bolts from the bottom through the holes and hand tighten the nuts on the top of the trailer hitch jumper harness. Tighten the bolts and nuts.
    2.5 Nm (1.8 lbs-ft)
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Make sure the bolts are inserted from the bottom of the jumper harness.
  6. Install the fir tree clip that attaches the trailer hitch jump harness to the trailer hitch assembly.
  7. Install the rear fascia. See Fascia - Rear (Remove and Install).