2026-06-15

Vehicle HV Disablement Procedure

Correction code 17010000 0.30 NOTA: Salvo diversa ed esplicita indicazione nella procedura, il codice modifica e il tempo forfettario, o FRT, riflettono tutto il lavoro richiesto per l'esecuzione di questa procedura, incluse le procedure collegate. Non cumulare i codici modifica a meno che non venga detto esplicitamente di farlo. NOTA: Consultare la Tempistica tariffe fisse per saperne di più sui tempi forfettari e su come essi vengono creati. NOTA: Consultare Protezione personale per assicurarsi di indossare i DPI adatti quando si esegue la procedura descritta di seguito. NOTA: Vedere per le pratiche di lavoro in sicurezza.

  • 2025-11-26: Added note to keep HV gloves on if procedure that required disablement involves touching HV components.
  • 2025-10-22: Added info in measurement table on GND point to be used for Negative (-) Lead, modified measurement sequence.
  • 2025-03-24: Added warning for regional tooling regulations.
  • 2025-01-30: Clarified B+ and B- probe step.
  • 2024-10-21: Rearranged multimeter probing images to align with HV measurement table.
  • 2024-06-05: Added warning to measure the specified order of locations for high voltage.
  • 2023-12-12: Updated voltage measurement order.
  • 2023-11-08: Added/updated HV insulating glove steps.
  • 2023-06-29: Added the whole procedure video as an overview for supplemental purposes only.
  • 2023-08-30: Added a tip about replacing the probe to the multimeter-related step.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
This procedure verifies that high voltage power is no longer available to high voltage components (PTC heater, A/C compressor, inverters, etc). Perform this procedure before servicing high voltage components.
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Warning
Togliere tutti i gioielli (orologi, bracciali, anelli, collane, orecchini, medagliette, piercing, ecc.) e tutti gli oggetti (chiavi, monete, penne, matite, strumenti, dispositivi di fissaggio, ecc.) dalle tasche prima di eseguire qualsiasi procedura in presenza di alta tensione.
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Warning
Se è necessario indossare occhiali da vista per eseguire in sicurezza qualsiasi procedura, assicurarsi che gli occhiali siano fissati saldamente alla testa e non possano cadere.
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Warning
Always wear High Voltage (HV) gloves and safety glasses when handling any high voltage component, including test equipment. Before each use, test gloves using an authorized glove tester and verify that the testing date on the gloves has not expired.
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Warning
All repair and operating instructions should be reviewed and understood before working on Tesla vehicles, associated components, or associated repair equipment.
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Warning
Assume that high voltage is present at all times when working on a Tesla vehicle, associated high voltage components, or associated high voltage test equipment until proven otherwise. Be aware that energy states can change during testing, so err on the side of caution.
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Warning
Always have an electrical safety hook in the area when working with HV components. Electrical safety hooks are used to remove an injured person from a live high voltage circuit without risking additional injury.
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Warning
Use a high voltage digital multimeter to check for the presence of high voltage on both sides of the connector every time a high voltage connector is disconnected.
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Warning
In certain regions, a Voltage Absence Tester (VAT) is required for this procedure, and the use of a multimeter is not allowed. Always adhere to local or regional tooling regulations.
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Warning
Make sure that the multimeter and leads are capable of handling at least 500V DC.
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Warning
Obey all instructions when using test equipment or servicing a Tesla vehicle or associated high voltage components. If repair instructions are not clear or if there are any questions about how to use the test equipment, escalate a Toolbox session before proceeding.
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Warning
If any test equipment fails to operate as expected, do not attempt to diagnose or repair the vehicle. Follow the appropriate lock out – tag out procedure for the equipment, notify your manager.
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Warning
When using test equipment, make sure that all cables are connected before turning equipment on or otherwise initiating use.
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Warning
High voltage is present on battery recovery chargers whenever the HV LEDs are lit. However, indicators and LEDs can fail. Do not assume that if an LED is not lit no high voltage is present. Assume high voltage is present at all times until proven otherwise by use of a multimeter.
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Warning

Solo i tecnici che hanno completato tutti i corsi di certificazione richiesti sono autorizzati a eseguire questa procedura. Tesla raccomanda ai tecnici di fornitori di terze parti di seguire una formazione equivalente prima di svolgere la presente procedura. Per maggiori informazioni sui requisiti dei Tecnici Tesla, o per le descrizioni degli argomenti richiesti per i tecnici di fornitori terzi, vedere i Requisiti per certificazioni HV. Ogni volta che si maneggia un raccordo, una barra di distribuzione o un cavo ad alta tensione è necessario indossare idonei dispositivi di protezione individuale (DPI) e guanti isolanti per l'alta tensione con classe di protezione minima 0 (1000 V). Per ulteriori informazioni sulla sicurezza, fare riferimento alle Note tecniche relative ai rischi dell'alta tensione TN-15-92-003, "High Voltage Awareness Care Points".

Equipment:
  • 1083188-00-B FLUKE DIGITAL MULTIMETER 115
  • 1130480-00-A Test Probes, Slim, Fluke TP38

Procedure

  1. Disconnect 12V/LV power. See 12V/LV Power (Disconnect and Connect).
  2. Remove the 2nd row lower seat cushion, if not yet removed in the previous step. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
  3. Set the multimeter to measure voltage, and then measure the voltage across the 12V/LV auxiliary battery terminals.
    Informational PurposesAn informational icon, calling your attention
    Note
    For LV (Li-Ion) auxiliary battery: if the voltage across the battery terminals is 0, the battery may have switched off internally. Use a 12V Lead Acid battery for testing. For mobile technicians: use the 12V Lead Acid battery in the Mobile Service vehicle.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    For LV (Li-Ion) auxiliary battery: if the voltage across the battery terminals is less than 13 volts or greater than 16 volts, the multimeter is not measuring reliably and must not be used.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    For 12V (Lead Acid) auxiliary battery: if the voltage measured is less than 10 volts or greater than 14 volts, the multimeter is not measuring reliably and must not be used.
  4. Remove all items from pockets and ensure not wearing metal items.
  5. Inspect HV insulating gloves.
    Informational PurposesAn informational icon, calling your attention
    Note
    Check gloves for damage prior to use, Refer to service document TN-15-92-003 R1, for information on inspecting HV gloves.
  6. Put on HV insulating gloves, leather outer gloves, and safety glasses.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Continue to wear the gloves until instructed to remove them.
  7. Remove the HV probe cover. See #GUID-E9EF226B-9A39-48A9-B624-FF404018761C.
  8. Use a multimeter to probe the voltages.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    In order to limit potential exposure to high voltage, measure for high voltage in the order specified below.
    Measurement Order

    Component Test

    B+

    (Probe opening closer to HV DC connector)

    B-

    (Probe opening, closer to HV Processor Logic connector)

    GND

    Measured Voltage less than 10 V

    Measured Voltage 10 V or more
    1

    HV battery positive contactor

    Positive (+) Lead

    Negative (-) Lead on ancillary bay cover

    Pass

    Fail

    HV battery positive contactor might be seized. See.
    2

    HV battery negative contactor

    Positive (+) Lead

    Negative (-) Lead on ancillary bay cover

    Pass

    Fail

    HV battery negative contactor might be seized. See.
    3

    HV

    Positive (+) Lead

    Negative (-) Lead

    Pass

    Fail

    Perform a HV battery contactor seize check. See.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Electrical Protective Gloves
    • Slim Test Probes - 1130480-02-A
    • Fluke 1587 - 1076921-00-A
    Figure 1. B+ to Ground measurement
    Figure 2. B- to Ground measurement
    Figure 3. B+ to B- measurement
  9. Return to the procedure that required the vehicle to be electrically isolated.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Follow all safety instructions and PPE requirements of the procedure that required the vehicle to be electrically isolated. Do not remove the HV gloves if the procedure requires you to handle high voltage cables, busbars, or fittings.
    Informational PurposesAn informational icon, calling your attention
    Note
    If you are no longer exposed to high voltage, the HV insulating gloves may be removed.