Replacement of the EV coolant pump on a 2024 Tesla Cybertruck Cyberbeast. This is a PROFESSIONAL-ONLY procedure — the pump is integrated with Tesla's shared thermal loop (battery, drive units, cabin) and requires Tesla Toolbox software to safely depressurize and refill. Battery coolant inspection is a Tesla-recommended 4-year / 50,000 mi service item.

Warnings

Tools required

Parts

• EV coolant pump assembly (Cybertruck-specific) × 1 — Manufacturer-specified pump for Cybertruck thermal loop — confirm via VIN at Tesla Parts
• O-rings / seals for pump fittings × 1 — OEM seals supplied with pump kit
• Replacement hose clamps (single-use spring or constant-tension type) × 4 — OEM-spec replacement clamps

Fluids

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

Preparation

1. Park on level ground, place in P, engage the parking brake.
2. Exit ALL doors with the key fob/phone key carried away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize.
3. Connect Tesla Toolbox and place the vehicle in Service Mode. Use Toolbox to depressurize the battery cooling loop and command coolant pumps OFF. DO NOT skip this — the loop is pressurized and shared with the HV battery.
4. Disconnect the 48V low-voltage battery per Toolbox-guided procedure. Note: the Cybertruck 48V LV system uses different connectors and fusing than 12V Teslas.
5. DO NOT touch, cut, or pierce ANY orange cable — these are 800V and lethal.
6. 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.
7. Allow coolant to cool to ambient temperature (below 40°C / 104°F) before opening any line.
8. Raise the vehicle on a lift rated for Cybertruck weight using Tesla-specified lift points only — the stainless exoskeleton has no traditional pinch welds.
9. Remove the relevant underbody aero/protection panels to access the coolant pump location.
10. Stage a coolant catch pan beneath the pump area; have absorbent mats ready to protect any HV-adjacent components from drips.

Procedure

1. 1

   Verify loop depressurization
   With Tesla Toolbox connected, confirm the battery cooling loop reads 0 kPa (depressurized) and that coolant pumps are commanded OFF. Verify HV contactors are open. Do not proceed if pressure is non-zero.
   ⚠️Opening a pressurized loop can spray hot coolant onto HV components and cause severe burns. Verify 0 kPa via Toolbox before continuing.
2. 2

   Remove underbody and access panels
   Remove the underbody aero panel(s) and any access covers required to expose the EV coolant pump. Retain all fasteners and note their locations. Cover screws will be reinstalled to OEM spec on reassembly.
   Torque spec

   Cover Screws11 Nm (8 lb-ft)
3. 3

   Locate and identify the coolant pump
   Identify the failed EV coolant pump in the thermal loop. The Cybertruck shares loops between battery, drive units, and cabin via the integrated thermal manager. Confirm the correct pump per Toolbox diagnostic data before disconnecting anything.
   ⚠Removing the wrong pump will introduce air into a different loop section and may require an extended Toolbox bleed cycle.
4. 4

   Disconnect electrical connector
   Release the locking tab on the LV electrical connector at the pump and unplug it. Inspect the connector for coolant intrusion or corrosion. Note: this is a 48V-architecture connector; do not back-probe with 12V test equipment.
   ⚠48V LV can still arc and damage sensitive control electronics. Confirm LV is disconnected at the battery before unplugging.
5. 5

   Position catch pan and prepare for fluid release
   Position a clean catch pan directly beneath the pump fittings. Lay absorbent matting on any surfaces below where coolant could drip onto HV-adjacent components or orange cabling.
   ⚠️Coolant contacting HV connectors or the HV battery enclosure can cause shorts, thermal events, or battery damage exceeding $15,000. Protect ALL HV-adjacent surfaces before opening the loop.
6. 6

   Disconnect coolant hoses from pump
   Release the hose clamps on the inlet and outlet hoses and carefully work each hose off the pump barbs. Allow coolant to drain into the catch pan. If quick-connect fittings are used, release per Tesla service procedure — do not pry. Discard single-use clamps.
   ⚠️This step breaks the integrated thermal loop. Improper handling can introduce coolant to HV components and damage the HV battery (~$15,000+ replacement). Catch all coolant; do not allow drips onto orange cabling or the HV battery enclosure.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)

   Coolant Line Fittings15 Nm (11 lb-ft)
7. 7

   Remove pump mounting hardware
   Support the pump body, then remove the mounting bolts and any bracket bolts securing the pump to its mount. Lower the pump out of the vehicle. Inspect the mounting bracket and isolation grommets for damage.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)

   Bracket Bolts20 Nm (15 lb-ft)
8. 8

   Inspect old pump and removed coolant
   Inspect the removed pump impeller for debris, contamination, or wear. Inspect drained coolant for metallic particles, oil contamination, or discoloration — any of these indicate a deeper system issue (failed seal in another component) and must be investigated before installing the new pump.
   ⚠Metallic debris or oil in coolant suggests internal failure elsewhere in the loop. Installing a new pump without addressing root cause will result in repeat failure and potential HV battery damage.
9. 9

   Install new coolant pump
   Position the new pump in its mount. Install bracket and mounting bolts finger-tight first to ensure proper alignment, then torque to spec. Confirm the pump body is not under stress from misalignment.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)

   Bracket Bolts20 Nm (15 lb-ft)
10. 10

    Reconnect coolant hoses with new clamps
    Install new hose clamps onto each hose. Seat hoses fully onto the pump barbs (or quick-connect fittings until they audibly click and lock). Position clamps in the correct location per OEM marking and torque to spec. For threaded coolant line fittings, torque to the listed value.
    ⚠️Improperly seated hoses or incorrectly torqued fittings can leak under operating pressure and spray coolant onto HV components. A leak into the HV battery enclosure can destroy the pack. Verify each connection visually and by gentle tug.
    Torque spec

    Hose Clamps3 Nm (2 lb-ft)

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

    Reconnect electrical connector
    Plug the LV connector back into the new pump until the locking tab clicks. Verify the connector is fully seated and the locking tab is engaged.
12. 12

    Reinstall any removed sensors
    If a coolant temperature sensor or pressure sensor was removed for access, reinstall it now with new seal and torque to spec.
    Torque spec

    Sensor Bolts11 Nm (8 lb-ft)
13. 13

    Vacuum-fill and bleed the cooling system
    Connect a vacuum-fill station to the cooling system service port. Pull the system to the manufacturer-specified vacuum, hold to verify no leak-down, then fill with Tesla Battery/Motor Coolant (G-48). Use Tesla Toolbox to run the automated bleed/fill cycle — this commands the pumps and valves through positions that cannot be replicated manually.
    ⚠️Air pockets in the battery cooling loop can cause local hot spots and HV battery damage. The Toolbox-guided bleed sequence is mandatory — do not 'burp' manually as you would on an ICE vehicle.
14. 14

    Pressure test and leak check
    Use Toolbox to pressurize the loop to service-test pressure and monitor for decay. Visually inspect every joint disturbed during the procedure for weeping or seepage. Recheck after a 10-minute hold.
    ⚠️Any pressure decay indicates a leak. Do not return the vehicle to service with a suspected leak — coolant intrusion into the HV battery is catastrophic.

Reassembly

1. Reinstall underbody aero/protection panels, torquing cover screws to spec.
2. Reconnect the 48V low-voltage battery per Toolbox-guided sequence.
3. Exit Service Mode in Toolbox and clear any related DTCs.
4. Lower the vehicle from the lift.
5. Top off coolant reservoir to the cold-fill mark after the first heat cycle if needed.

Verification

• With Toolbox connected, command the new coolant pump ON and verify expected flow/RPM telemetry.
• Run a full thermal system self-test via Toolbox; confirm no thermal or HV battery DTCs are present.
• Drive the vehicle through a normal duty cycle (including a charging session) and re-scan for coolant temperature, pressure, and leak-detection codes.
• Inspect the pump and all disturbed fittings for leaks after the test drive — top and underside.
• Verify coolant reservoir level is at the cold-fill mark after the system cools.
• Document service date and mileage; Tesla recommends battery coolant inspection every 4 years / 50,000 mi — schedule the next inspection accordingly.
• Confirm steer-by-wire calibration is intact (no fault on yoke/steering rack) before releasing the vehicle.

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