2025-08-18

Coolant Pump - HV Battery (Heat Pump) (Remove and Replace)

Correction code 18308522 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.

  • 2025-07-09: Added steps of configuring the coolant pump type.
  • 2024-04-25: Updated the UI routines.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
The video(s) included in this procedure are meant as an overview for supplemental purposes only. Follow all of the steps listed in the procedure to avoid damage to components and/or personal injury.
Informational PurposesAn informational icon, calling your attention
Note
If the coolant pump has been replaced twice, escalate a Toolbox session before proceed.

Torque Specifications

Table 1. Torque Specifications: Coolant Pump - HV Battery (Heat Pump) (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Bolts (x4) that attach the HV battery coolant pump to the supermanifold
1.8 Nm (1.3 lbs-ft)
  • Torx T20 socket
  • 2 in extension
Reuse

Remove

  1. Place the vehicle on the 2-post lift.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Ensure the vehicle is not charging.
  2. Place the vehicle in Service Mode. See Service Mode.
  3. Remove the cabin intake duct. See Duct - Upper - Cabin Intake (Remove and Replace).
  4. Unlock the vehicle gateway. See Gateway (Unlock).
  5. On the touchscreen, touch Service Mode > Thermal > Coolant System > Coolant Fill/Drain and select Run, and allow the routine to complete.
  6. Disconnect 12V power. See 12V/LV Power (Disconnect and Connect).
  7. Remove the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).
  8. Release connector lock, and then disconnect the HV battery coolant pump electrical connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Do not push down on the red tab. Pull the red tab to disengage lock, and then pull again to release the connector.
  9. Position a coolant drain container underneath the battery coolant pump.
  10. Remove the bolts (x4) that attach the HV battery coolant pump to the the supermanifold.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Torx T20 socket
    • 2 in extension
  11. Remove the HV battery coolant pump from the Supermanifold.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure both o-rings (inner purple and outer black) come off with old pump.

Install

  1. Lubricate both o-rings with silicone o-ring lubricant before installation.
  2. Position the HV battery coolant pump to the supermanifold, and then install and hand-tighten the bolts (x4).
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Torx T20 socket
    • 2 in extension
    Informational PurposesAn informational icon, calling your attention
    Note
    Take note of the connector position and install the coolant pump with the connector tab facing up.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Install the upper right bolt with the coolant pump for easier installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the coolant pump is fully seated.
  3. Torque the bolts (x4) that attach the HV battery coolant pump to the Supermanifold.
    1.8 Nm (1.3 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Torx T20 socket
    • 2 in extension
  4. Connect the HV battery coolant pump electrical connector, and then engage the connector locking tab.
  5. Remove the coolant drain container from underneath the vehicle.
  6. Install the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).
  7. Perform a cooling system vacuum refill. See Cooling System (Vacuum Refill).
  8. Connect 12V power. See 12V/LV Power (Disconnect and Connect).
  9. Unlock the vehicle gateway. See Gateway (Unlock).
  10. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Thermal > Stop Thermal Fill Drain, and allow the routine to complete.
  11. Place the vehicle in Service Mode Plus.
    1. Enter the last six digits of VIN into the Vehicle Ops mobile app.
    2. Select vehicle from the list.
    3. Swipe to the left, and then select Enable Service Mode Plus.
  12. Tap Thermal > Vehicle Configurations > coolantPumpType to inspect the current coolant pump configuration. If the configuration is not DUAL_MIX, change it to DUAL_MIX.
  13. Tap Coolant System > Run Coolant Pumps Identification > Run, and close once the routine is passed.
  14. Tap Coolant System > Coolant Purge > Run, and close once the routine is passed.
  15. Inspect the coolant level and top off as necessary.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure that the coolant is filled to the "Max" line.
  16. Install the coolant bottle cap.
  17. Install the cabin intake duct assembly. See Duct - Upper - Cabin Intake (Remove and Replace).
  18. On the touchscreen, press and hold the Exit Service Mode button to exit Service Mode Plus.