Replacement of the EV coolant pump on a 2024 Model X Long Range. This is a PROFESSIONAL-ONLY procedure requiring Tesla Toolbox software to safely depressurize and bleed the integrated battery/motor thermal loop. Battery coolant should be inspected per Tesla's 4-year / 50,000 mi guidance.

Warnings

Tools required

Parts

• EV coolant pump assembly (manufacturer-specified for 2024 Model X) × 1 — Tesla OEM coolant pump — refer to VIN-specific parts catalog
• Coolant line O-rings / seals (as supplied with pump or service kit) × 1 — OEM seal kit for coolant pump
• Hose clamps (single-use spring or worm-style as fitted) × 2 — OEM replacement clamps

Fluids

• Tesla Battery/Motor Coolant (G-48 specification) — 10 qt

Preparation

1. Park on level ground, place in P, engage parking brake.
2. Exit ALL doors with key fob away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. Disconnect the 12V low-voltage battery in the frunk (similar position to Model S). Remove frunk liner/cowl trim as needed to access the 12V terminals; disconnect negative first.
4. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal.
5. If at any point you encounter an orange cable, an HV component, or are unsure if a system is de-energized: STOP and consult a Tesla-certified technician.
6. Connect Tesla Toolbox, place vehicle in Service Mode, enable Jack Mode, and disable Falcon door operation.
7. Use Toolbox to depressurize and isolate the affected coolant loop. Verify pressure has bled down before opening any fitting.
8. Allow the vehicle to cool fully — coolant in the thermal loop can be hot even hours after driving.
9. Stage a coolant catch pan capable of holding the full 10 qt system capacity in case of unintended drain.
10. Identify the specific coolant pump being replaced (battery loop vs. powertrain loop) using Toolbox documentation for this VIN.

Procedure

1. 1

   Raise and support the vehicle
   With Jack Mode engaged, raise the Model X on a lift or jack stands at the manufacturer-designated lift points. Confirm air suspension is fully isolated. Remove the relevant underbody aero panel(s) to access the coolant pump location.
   ⚠Aero panel fasteners are often plastic clip-and-screw combinations; do not over-torque on reinstall.
   Torque spec

   Cover Screws11 Nm (8 lb-ft)
2. 2

   Verify coolant loop is depressurized
   Using Toolbox telemetry, confirm coolant pressure on the relevant loop reads at or near 0 kPa. Visually inspect for residual pressure at the highest accessible bleed point before any line is broken.
   ⚠️Opening a pressurized line on Tesla's integrated thermal loop can spray hot coolant onto HV components, risking battery damage (~$15,000+ replacement) and personal injury. Do not proceed without Toolbox-confirmed depressurization.
3. 3

   Drain the affected coolant loop
   Position the catch pan beneath the lowest point of the loop. Following Toolbox-guided drain procedure, open the designated drain or low fitting to capture coolant. Capture and label fluid; do not reuse if contaminated.
   ⚠️This loop may be shared with the HV battery. Any coolant escaping into battery enclosures or onto HV connectors can cause irreparable pack damage. Contain all spills immediately.
   ⚠Tesla coolant (G-48) is toxic to pets and wildlife — capture and dispose per local hazmat regulations.
   Torque spec

   Coolant Line Fittings15 Nm (11 lb-ft)
4. 4

   Disconnect the pump electrical connector
   Locate the low-voltage connector on the coolant pump. Release the locking tab and disconnect. Inspect the connector for coolant intrusion or corrosion and note any findings.
   ℹ️The pump connector is low-voltage, but it is routed near HV harnessing on the Model X. Confirm you are disconnecting the correct connector before pulling.
5. 5

   Disconnect coolant hoses from the pump
   Using hose clamp pliers, slide back or release the clamps on the inlet and outlet hoses. Carefully work hoses off the pump barbs. Plug both hose ends and the pump ports immediately to prevent debris ingress and residual drip onto HV components.
   ⚠️Residual coolant in the hoses can run down onto HV cabling or the battery enclosure. Use absorbent material under the work area and plug hose ends immediately. HV battery damage from coolant intrusion is not warranty-covered when caused by service error.
   ⚠Do not pry on aluminum coolant fittings with metal tools — surface damage can cause future leaks.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
6. 6

   Remove the pump mounting hardware
   Remove the bolts securing the pump to its bracket or chassis mount. Support the pump as the last fastener is removed. Note orientation and any isolation grommets for reuse.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)
7. 7

   Remove the coolant pump
   Withdraw the pump from the vehicle. Inspect the bracket and surrounding area for signs of long-term leakage, debris, or contact with adjacent components. Compare the new pump to the old to confirm correct part before installing.
8. 8

   Install the new coolant pump
   Transfer any reusable isolation grommets to the new pump. Set the pump into its mount in the original orientation and start mounting bolts by hand. Torque to specification.
   ⚠Do not pinch wiring or coolant hoses behind the pump body during installation.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)
9. 9

   Reconnect coolant hoses
   Install new clamps if specified. Seat hoses fully onto the pump barbs and position clamps in the original locations. Torque worm-style clamps to spec; spring clamps should be set fully home with hose-clamp pliers.
   ⚠️An improperly seated hose can release coolant under pressure once the loop is pressurized — directly threatening the HV battery. Verify full seating before refilling.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
10. 10

    Reconnect electrical connector
    Reseat the low-voltage connector to the pump until the locking tab clicks. Verify the connector is fully latched.
11. 11

    Vacuum-fill and bleed the coolant loop
    Using a vacuum fill tool, pull the loop down to manufacturer-specified vacuum and verify it holds. Fill with Tesla Battery/Motor Coolant (G-48) until the system stops drawing. Run the Toolbox-guided coolant bleed routine, which cycles the pumps and valves to purge air from the integrated loop.
    ⚠️Air pockets in the battery cooling loop can cause localized overheating of the HV pack. The Toolbox bleed routine is mandatory — manual 'squeeze the hoses' bleeding is NOT sufficient on this architecture.
    ⚠Use only Tesla-spec G-48 coolant. Mixing with non-approved coolants can cause corrosion and conductive contamination of the battery loop.
    Torque spec

    Coolant Line Fittings15 Nm (11 lb-ft)
12. 12

    Pressure test the loop
    Using Toolbox, command the pumps to run and monitor loop pressure and flow rates. Inspect every joint touched during service for weeping or seepage. Re-torque fittings only if specified by the procedure — do not over-torque to chase a leak.
    ⚠️Any leak in this loop is a potential battery-damage event. If a leak is detected, depressurize via Toolbox before retorquing or replacing seals.
    Torque spec

    Coolant Line Fittings15 Nm (11 lb-ft)

Reassembly

1. Reinstall underbody aero panels with original fasteners; do not over-torque plastic clips.
2. Top off coolant to the manufacturer-specified cold level after the bleed cycle completes.
3. Reconnect the 12V battery (positive first, then negative) and reinstall frunk trim.
4. Exit Service Mode, exit Jack Mode, and re-enable Falcon door operation in Toolbox.
5. Clear any DTCs related to the cooling system or service-mode entry.

Verification

• Confirm no active coolant, thermal, or BMS-related alerts on the touchscreen or in Toolbox.
• Run a Toolbox thermal system self-test; verify pump RPM and flow values are within spec for both warm-up and cool-down conditions.
• Drive the vehicle through a short conditioning cycle (preconditioning + a Supercharge session if available) and re-inspect for leaks at all disturbed joints.
• Verify coolant level remains at the cold-fill mark after the system has fully purged any remaining air (recheck after 24 hours).
• Log the service date and mileage. Tesla now recommends battery coolant inspection every 4 years / 50,000 mi — set the next inspection interval accordingly.
• Confirm Falcon doors operate normally through full open/close cycles after re-enabling, since Service Mode can leave them in a degraded state.

More procedures for this vehicle