2026-03-30

PTC Heater Electronics (Retrofit)

Correction code 16014567 FRT 1.14 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.

Informational PurposesAn informational icon, calling your attention
Note
Newer replacement HV battery packs do not have PTC heater electronics. Follow this procedure to install PTC heater electronics on the replacement pack.
Informational PurposesAn informational icon, calling your attention
Note
This procedure begins with the old HV battery already removed from the vehicle. Use this correction in conjunction with the appropriate HV battery (Remove and Replace) correction.
Informational PurposesAn informational icon, calling your attention
Note
The parts required for this rework will be automatically added to the service activity. However, the heat shrink tubing (3M PN: EPS300-3/4-48"-RED-45 PCS, Digikey PN: 3M161211-ND) must be procured externally (Tesla employees in NA and EMEA: use the Digikey punchout; Tesla employees in CN: order 2393485-00-A - Woer 3:1 Heat Shrink Tubing 9.5, Yellow).
Equipment:
  • 1109531-00-B - PTC/AC Header Removal Tool
  • 1126453-00-A - Tweezers
  • 1453448-01-A - Kit Digital Multimeter Set EXTECH 335
  • 1467483-00-B - M3/Y Penthouse Service Insulator Kit
  • 1131071-00-A - DUMMY DISCONNECT, PYRO, SAFETY
  • 1780974-00-A - HV TOOL KIT
  • 1076927-00-A - HIOKI RM 3548
  • 1076928-00-A - TEST PROBES - HIOKI 9461

Torque Specifications

Table 1. Torque Specifications: PTC Heater Electronics (Retrofit)
Description Torque Value Recommended Tools Reuse/Replace Notes
Nuts that secure the compressor/PTC fuse
4.5 Nm (3.3 lbs-ft)
  • Insulated 8 mm socket
 Replace 1104458-00-A

Nut that secures the HV battery ancillary positive busbar

Nut that attaches the negative AC harness to the negative HV battery DC link busbar
4.5 Nm (3.3 lbs-ft)
  • Insulated 8 mm socket
 Reuse
Bolts (x2) that secure the PCS output fuse
4.5 Nm (3.3 lbs-ft)
  • Insulated 8 mm socket
 Replace 1115833-00-B
Nuts (x2) that attach the AC negative harness to the transformer
2.5 Nm (1.8 lbs-ft)
  • Insulated 7 mm socket
 Reuse
Screw that secures the HV carrier assembly
3 Nm (2.2 lbs-ft)
  • Insulated Torx T20 bit
 Reuse
M4 nut and bolt
2.5 Nm (1.8 lbs-ft)
  • Insulated Torx T20 bit
  • Insulated 8 mm socket
 Reuse

Remove

  1. Remove the ancillary bay cover. See Cover - Ancillary Bay (Remove and Install).
  2. Remove the pyrotechnic disconnect and install the dummy disconnect. See Pyrotechnic Battery Disconnect (Remove and Replace).
  3. Use bungee to secure the HVC (high voltage controller) in an upwards position.
    Informational PurposesAn informational icon, calling your attention
    Note
    Wrap the bungee around the RH headrest.
  4. Remove and discard the patch nuts (x2) that secure the 700VDC 63A compressor fuse, and remove the fuse from the vehicle.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  5. Remove and discard the patch nuts (x2) that secure the 700VDC 63A PCS output fuse, and remove the fuse from the vehicle.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  6. Remove the nut that secures the HV battery ancillary positive busbar.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  7. Remove the HV battery ancillary positive busbar from the AWD busbar and distribution assembly.
  8. Remove the nut that attaches the negative AC harness to the negative HV battery DC link busbar.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  9. Remove the nuts (x2) that attach the AC negative harness to the transformer.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 7 mm socket
  10. Disconnect the HV carrier connector.
  11. Remove the screw that secures the HV carrier assembly.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated Torx T20 bit
  12. Disconnect the HV battery return tube from the RH rear of the new HV battery (1x spring clip).
  13. Disconnect the ancillary harness connector from the RH rear of the new HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release the red locking tab and rotate the lever arm to release.
  14. Remove the HV carrier assembly (2x tabs, 2x locating pins).
    Informational PurposesAn informational icon, calling your attention
    Note
    Insert the 4-pole header assembly removal tool into the align tool slot with short portion of the internal connector. Verify the tool is fully seated. Squeeze the tool release tabs and remove the HV carrier assembly.

Install

  1. Apply a 600v heat shrink sleeve to the harness, and then connect 2 terminals together using an M4 nut and bolt.
    2.5 Nm (1.8 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    The nut is 8 mm and the bolt is T20.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated Torx T20 bit
    • Insulated 8 mm socket
  2. Install the HV carrier assembly (2x tabs, 2x locating pins).
  3. Install the screw that secures the HV carrier assembly.
    3 Nm (2.2 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated Torx T20 bit
  4. Connect the ancillary harness connector to the RH rear of the HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    Hold the connector level with the header and secure with even upward force. Rotate the lever arm and secure the locking tab. Verify that the latch is fully secured and not damaged.
  5. Remove the plug and connect the HV battery return tube to thye RH rear of the HV battery (1x spring clip).
    Informational PurposesAn informational icon, calling your attention
    Note
    Perform a push-pull-push test to make sure that the hose is fully secured.
    Informational PurposesAn informational icon, calling your attention
    Note
    Coolant loss greater than 1L requires vacuum fill.
  6. Connect the HV carrier connector.
  7. Install the nut that attaches the negative AC harness to the negative HV battery DC link busbar.
    4.5 Nm (3.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  8. Perform Hioki resistance test at AC harness to negative HV battery DC link busbar.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 55 μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  9. Install upside-down M5 nuts (x2) to the ancillary tray as circled in the image.
  10. Install the HV battery ancillary positive busbar to the AWD busbar and distribution assembly.
  11. Install the nut that secures the HV battery ancillary positive busbar.
    4.5 Nm (3.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  12. Perform Hioki resistance test at ancillary positive busbar bracket to positive HV battery DC link busbar.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 60μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  13. Install new bolts (x2) that secure the 700VDC 63A PCS output fuse.
    4.5 Nm (3.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Mark after torque.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  14. Perform Hioki resistance test at 63A PCS fuse input joint.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 145μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  15. Perform Hioki resistance test at 63A PCS fuse output joint.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 105μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  16. Install new nuts (x2) that secure the 700VDC 63A compressor fuse.
    4.5 Nm (3.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Mark after torque.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  17. Perform Hioki resistance test at 63A compressor fuse output joint.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 105 μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  18. Perform Hioki resistance test at 63A compressor fuse input joint.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 145μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  19. Install new nuts (x2) to secure the 700VDC 63A PTC heater fuse.
    4.5 Nm (3.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Mark after torque.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Insulated 8 mm socket
  20. Perform Hioki resistance test at 63A PTC heater fuse output joint.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 105 μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  21. Perform Hioki resistance test at 63A PTC heater fuse input joint.
    Informational PurposesAn informational icon, calling your attention
    Note
    The acceptable value is 145 μΩ or less. Perform zero adjust to Hioki meter prior to testing.
  22. Install the fuses access insulator (3x clips).
  23. Remove the dummy disconnect and install the pyrotechnic disconnect. See Pyrotechnic Battery Disconnect (Remove and Replace).
  24. Install the ancillary bay cover. See Cover - Ancillary Bay (Remove and Install).