Replacement of the HVAC blower motor control module (power module/resistor) on a 2024 Tesla Cybertruck Cyberbeast. The module is mounted on or adjacent to the blower housing under the front trunk HVAC area and regulates fan speed via PWM control from the climate ECU.

Warnings

Tools required

Parts

• Blower Motor Control Module (HVAC fan power module) × 1 — Manufacturer-specified Cybertruck HVAC blower control module — match by VIN

Preparation

1. Park on level ground, place in P, and engage the parking brake.
2. Exit ALL doors with the 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 48V low-voltage battery per Tesla's published Cybertruck procedure (48V architecture — NOT 12V). Locate the 48V battery and isolate the negative terminal 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. Allow the HVAC system to sit powered off for several minutes so the heater core and any electric heating element cool before reaching into the HVAC housing.
7. Open the frunk and/or cabin (depending on module location) and lay protective covers over the stainless exoskeleton edges and any painted/trim surfaces near the work zone.
8. Identify the blower control module location — it is typically mounted to the blower housing on the passenger-side lower dash / glovebox area, accessible from inside the cabin. Confirm exact location against the manufacturer service documentation for your VIN.

Procedure

1. 1

   Verify low-voltage system is de-energized
   With the 48V battery disconnected, verify there is no system power by attempting to wake the vehicle (touch handle, open door). Confirm interior electronics remain dark. Do NOT proceed if any 48V system shows life.
   ⚠48V systems can retain charge in capacitors briefly — wait the full 2 minutes.
2. 2

   Access the blower housing area
   From the front passenger footwell, remove the lower dash kick panel and any sound-deadening trim covering the HVAC blower housing. Use plastic trim tools to release clips. If the glovebox blocks access, open it, depress the side stops, and lower it fully or remove its hinge fasteners.
3. 3

   Remove footwell trim/cover screws
   Remove the cover screws securing the lower HVAC access cover or trim panel. Set fasteners aside in order — Cybertruck uses different lengths in adjacent locations.
   Torque spec

   Cover Screws11 Nm (8 lb-ft)
4. 4

   Locate the blower motor control module
   Identify the blower control module — a finned aluminum or plastic-housed unit with a multi-pin connector, mounted directly to the side of the blower housing so airflow cools its heatsink. Note connector orientation and any anti-rotation tabs before disturbing.
5. 5

   Disconnect the module electrical connector
   Release the connector lock tab and gently disconnect the harness from the control module. Inspect the connector for melting, discoloration, or corrosion — these are common failure indicators on blower control modules and may indicate a harness issue, not just a module fault.
   ⚠If the connector or pins show heat damage, replacing only the module will not fix the root cause — the harness pigtail must also be repaired.
6. 6

   Remove module mounting fasteners
   Remove the two (typically) module mounting bolts/screws securing the control module to the blower housing. Support the module as the last fastener is removed so it does not drop into the HVAC ductwork.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
7. 7

   Withdraw the old module
   Carefully extract the module straight out of the blower housing. The heatsink fins protrude into the airflow path — do not bend them against the housing. Inspect the housing opening for debris (leaves, pet hair, cabin filter shedding) and vacuum clean as needed.
8. 8

   Compare old and new modules
   Verify the replacement module is identical: connector keying, heatsink shape, mounting hole pattern, and any model/firmware identifier. Cybertruck climate hardware differs from S/3/X/Y — do not substitute another Tesla module.
   ⚠Installing the wrong module variant can cause fan runaway, no-blower, or HVAC ECU faults that require dealer software intervention to clear.
9. 9

   Install the new blower control module
   Seat the new module fully into the blower housing, ensuring the heatsink is correctly oriented in the airflow path and any gasket/seal is intact. Do not pinch wiring.
10. 10

    Torque module mounting bolts
    Install the module mounting bolts and torque to specification. Do not overtighten — the housing is plastic and threads strip easily.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
11. 11

    Reconnect the harness
    Plug the harness connector into the new module until the lock tab clicks. Tug-test gently to confirm full engagement.

Reassembly

1. Reinstall the lower HVAC access cover / kick panel and torque the cover screws to specification.
2. Reinstall the glovebox if it was lowered/removed; verify smooth operation and damper engagement.
3. Reinstall any sound-deadening or trim panels disturbed during access.
4. Reconnect the 48V low-voltage battery (positive first, then negative — follow Tesla's published Cybertruck reconnection sequence). Torque battery terminal hardware to the Battery Terminal Bolts spec — do not overtighten.
5. Close the frunk and all doors; allow the vehicle to fully wake and complete its self-checks before testing.

Verification

• Power up the vehicle and open the climate control screen. Cycle blower fan from lowest to highest speed — verify smooth, stepless airflow change with no clicking, buzzing, or surging.
• Confirm there are no climate or HVAC fault messages on the center display.
• Hold a hand at the dash vents at each fan speed to confirm the new module is correctly modulating PWM (airflow should clearly increase with each setting).
• Run AUTO climate for several minutes and verify the module housing area does not produce burning smells, smoke, or unusual heat.
• If the vehicle logs a persistent HVAC DTC after replacement, the harness or climate ECU may be implicated — further diagnosis with Tesla-approved scan tooling is required.
• While the cabin is open, note the cabin air filter service interval: Tesla recommends cabin filter replacement every 2 years on Cybertruck — replace now if overdue, as a clogged filter can shorten the life of the new control module.

More procedures for this vehicle