Tesla Model S Owners & Service Manuals

Tesla Model S: Starting/Discharging the System

Starting the System

  1. Press the emergency stop button to disable HV systems.
  2. Pull out the display/keyboard/trackpad tray.
  3. Press the red power button to turn on the on-board PC.
  4. Follow the onscreen instructions to log in to the system.
    Username: batterytool
    Password: Tesla1234
    Domain: CHGDCH-PC#
    Note: The username and password are case-sensitive. Enter the username and password as shown above.

    Note: Do not set the domain to TESLAMOTORS.

  5. Launch the Model S Charger/Discharger GUI application from the Start menu or the shortcut on the desktop. The HV battery serial number, SOC, and shipping bit status are shown.

    Starting the System

Discharging the Battery
  1. Select the desired SOC from the Charge/Discharge Mode menu.

    Discharging the Battery

  2. If Manual Mode is selected, type the desired SOC in the Target SOC% field, or drag the Target SOC% knob to the desired SOC.
  3. Set the load bank power switch to the on position. Set the load bank 7 kW switch to the 7 kW (off) position.
  4. Release the emergency stop button by turning the knob counter-clockwise.
  5. Select the Start button in the software application. The Start button changes to a Stop button.
  6. The battery contactors close and discharging begins. The pack current, discharging indicator, and estimated hours remaining display on the right side of the window.

    Discharging the Battery

  7. When the target SOC is reached, the tool automatically stops the discharging operation and opens the contactors. The discharging operation can be manually stopped by pressing the Stop button in the software application. Note: The emergency stop switch on the charger/interface box can be used to immediately open the contactors in an emergency. Do not press the emergency stop switch except in an emergency, as it opens the contactors under load and disconnects power to the BMS, causing the Charger/Discharger Tool to lose communication with the BMS.
  8. When the operation is complete, make sure the contactor state is "Open", then engage the emergency stop switch.
  9. Wait until the voltage displayed on the HV DC Link Voltmeter is less than 5V, then shut down the PC.

    Discharging the Battery

  10. Turn off all powered components.
  11. Disconnect the HV battery.


     Charging the Battery

    Select Manual Mode from the Charge/Discharge Mode menu. Type the desired SOC in the Target SOC% field, or drag the Target SO


    Charging does not start. The green "Ready" light in the software application is dimmed. Check that the HV power supply is plugged in and turned on. Check the connections at th

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    Special tools required for this procedure: Supplier Part Number Description Tesla 1057671-


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    Setup Press the Power button and watch the display. When the display shows "ATEQ VT30", note the version number: If the version is EA1-07, refer to TN-14-92-005, "ATEQ TPMS Tool Firmware Update" to update the tool's firmware. If the version is hi

     Parking Brake

    To engage the parking brake, touch Controls > Safety > Parking Brake. Follow the onscreen instructions. Use the touchscreen to manually release the parking brake (which also shifts Model S into Neutral): 1. Touch Controls > Safety. 2. Press the brake pedal, then touch Parking Brake. If

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