2026-08-09

Contactor - Negative - HV Battery (Model Y L) (Remove and Replace)

Correction code 16300212102 FRT 1.68 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and its associated 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. 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.

  • 2026-06-16: Released new procedure.
Equipment:
  • 1076928-00-A Test Probes - Hioki 9461
  • 1453448-01-A Kit Digital Multimeter Set EXTECH 335
  • 1076927-00-A Hioki tester
Warning
Only technicians who have completed all required certification courses are permitted to perform this procedure. Tesla recommends third party service provider technicians undergo equivalent training before performing this procedure. For more information on Tesla Technician requirements, or descriptions of the subject matter for third parties, see HV Certification Requirements. 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 safety information.

Torque Specifications

Table 1. Torque Specifications:Contactor - Negative - HV Battery (Model Y L) (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Patch bolt that attaches the negative pack contactor to the DC link busbar joint
5 Nm (3.7 lbs-ft) + 60 degrees
  • SKT, 1/4" SQ DR, 13MM, HV INSULATED
 Replace 1104475-00-F
Patch nut that attaches negative pack contactor to the HV battery tall silicon terminal
5 Nm (3.7 lbs-ft) + 35 degrees
  • SKT, 1/4" SQ DR, 13MM, HV INSULATED
 Replace 1104654-00-B
Nuts (x3) that attach the negative pack contactor to the ancillary bay
8 Nm (5.9 lbs-ft)
  • Insulated Socket 1/4in Dr. 12pt. Deep x 10mm
 Reuse

Remove

  1. Remove the pyrotechnic battery disconnect. See Pyro Disconnect - HV Battery (Model Y L) (Remove and Replace).
  2. Disconnect the ancillary bay harness connectors (x2) from negative pack contactor.
  3. Remove the HV joint insulators (x2) from the negative pack contactor.
  4. Remove and discard the patch bolt that attaches the negative pack contactor to the DC link busbar joint.
    Tip
    Use of the following tool(s) is recommended:
    • SKT, 1/4" SQ DR, 13MM, HV INSULATED
  5. Remove and discard the patch nut that attaches negative pack contactor to the HV battery tall silicon terminal.
    Tip
    Use of the following tool(s) is recommended:
    • SKT, 1/4" SQ DR, 13MM, HV INSULATED
  6. Remove the nuts (x3) that attach the negative pack contactor to the ancillary bay.
    Tip
    Use of the following tool(s) is recommended:
    • Insulated Socket 1/4in Dr. 12pt. Deep x 10mm
    Note
    Use insulated magnet to retrieve the nuts after removal. The number of nuts on newer vehicles may vary.
  7. Remove the guide pins (x2) to remove the negative pack contactor from the ancillary bay.

Replace

  1. Position the negative pack contactor to the ancillary bay for installation, and then install the guide pins (x2).
  2. Install the nuts (x3) that attach the negative pack contactor to the ancillary bay, and mark after torque.
    8 Nm (5.9 lbs-ft)
    Tip
    Use of the following tool(s) is recommended:
    • Insulated Socket 1/4in Dr. 12pt. Deep x 10mm
    Note
    Use insulated magnet as needed to position the nuts onto the studs. The number of nuts on newer vehicles may vary.
  3. Install new patch bolt that attaches the negative pack contactor to the DC link busbar joint, and mark after torque.
    5 Nm (3.7 lbs-ft) + 60 degrees
    Tip
    Use of the following tool(s) is recommended:
    • SKT, 1/4" SQ DR, 13MM, HV INSULATED
  4. Install new patch nut that attaches negative pack contactor to the HV battery tall silicon terminal, amd mark after torque.
    5 Nm (3.7 lbs-ft) + 35 degrees
    Tip
    Use of the following tool(s) is recommended:
    • SKT, 1/4" SQ DR, 13MM, HV INSULATED
  5. Perform a zero adjust of the Hioki resistance meter. See Resistance Meter (Zero Adjust).
  6. Perform Hioki impedance test at the HV joint of the negative pack contactor to the negative DC link busbar.
    Note
    The acceptable impedance is 30 μΩ or less.
  7. Perform Hioki impedance test at the negative pack contactor to module 1 rear terminal
    Note
    The acceptable impedance is 134 μΩ or less.
  8. Install the HV joint insulators (x2) to the negative pack contactor.
  9. Connect the ancillary bay harness connectors (x2) to the negative pack contactor.
  10. Install the pyrotechnic battery disconnect. See Pyro Disconnect - HV Battery (Model Y L) (Remove and Replace).
  11. Raise all windows and close all doors.