Tesla Model X Owners & Service Manuals

Tesla Model X: Vehicle Electrical Isolation Procedure

Tesla Model X 2015-2024 Service Manual / Electrical / Vehicle Electrical Isolation Procedure

Warning: Only technicians who have been trained in High Voltage Awareness are permitted to perform this procedure. Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 00 (500V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.

Special tool(s) required for this procedure:

Supplier Part Number Description
  1076921-00-A Fluke 1587 Insulation Multimeter
Electrical Isolation

Note: After disconnecting 12V power, the rear doors and liftgate are inoperable. Open any necessary closures before proceeding.

  1. Open the liftgate.
  2. If equipped, fold down the 3rd row seats.
  3. Disconnect 12V power (refer to procedure).
Caution: Ensure that the first responder loop has been disconnected for at least 2 minutes.
  1. Remove the LH rear trunk carpet and trim assembly (refer to procedure).
  2. Remove the foam HVAC ducting.

     Electrical Isolation

  3. Remove and discard the warranty label from the charger access panel.

    Note: Components have been removed in this graphic to aid clarity.

     Electrical Isolation

  4. Remove the screws (x11) that secure the charger access panel (torque 2 Nm).

     Electrical Isolation

Warning: Only technicians who have been trained in High Voltage Awareness are permitted to perform this procedure. Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 00 (500V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.
  1. Gently peel back the rubber cover to expose the HV fasteners.

     Electrical Isolation

  2. Use the charger casing as a chassis ground. Measure the following voltages: Warning: Ensure that the multimeter and leads are capable of handling at least 500V. Warning: Do not use a probe with an exposed tip length that is greater than 3 mm.
    • B+ to ground
    • B- to ground
    • B+ to B-
    Warning: If any voltage reading is more than 10V, the high voltage contactors are not fully opened. Due to the risk of electrocution, contact Service Engineering before performing any further work.
  3. Replace components that were removed for access.

Note: Clean the adhesive residue on the charger and charger access panel with an alcohol wipe before installing a new warranty label.

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