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Disconnect Negative Lead-Acid Battery Terminal

WARNING: This page is about a different variant/trim than selected.
WARNING:
  • Before removing the SRS air bag system-related parts, always disconnect the negative lead-acid battery terminal and wait for 1 min or more to allow the back-up power supply to deplete its stored power.
  • Contact with the positive lead-acid battery terminal could cause electrocution due to a short circuit and result in serious injury or death, or damage to vehicle parts. Do not contact the positive lead-acid battery terminal when performing the procedure.
CAUTION:
  • If the nut for the current sensor is loosened with the negative lead-acid battery terminal connected to the lead-acid battery, excessive torque will be applied to the negative lead-acid battery terminal and the lead-acid battery terminal will be damaged. When removing the negative lead-acid battery terminal and current sensor, be careful not to damage the lead-acid battery terminal.
  • Be careful not to contact the positive lead-acid battery terminal.
  1. Verify that the charge cable is not connected to the charging port.
    • If the charge cable is connected to the charging port, remove the charge cable.
  2. Keep the driver's door open.
  3. Keep the main power switched ON (READY on) for 3 s or more.
  4. Switch the main power OFF and start measuring the time since the main power was switched OFF using a stopwatch.
    CAUTION:
    • If the cooling fan does not stop after 5 min have elapsed since the main power was switched OFF, wait until it stops.
    • If the [Battery cooling] operation notification is displayed on the center display, do not make a selection and leave it as it is.
  5. Switch the main power OFF and wait for 5 min.
    WARNING:
    • Before servicing after disconnecting the negative lead-acid battery terminal, wait for 1 min or more.
    CAUTION:
    • If the time since the main power was switched OFF in Step 5 to the disconnection of the negative lead-acid battery terminal exceeds 25 min, perform the procedure from Step  3 again.
    NOTE:
    • In order to prevent it from falling off, the negative lead-acid battery terminal nut cannot be removed.
    • After the negative lead-acid battery is disconnected, there is no restriction on opening/closing the door.
  6. Disconnect the negative lead-acid battery terminal within 25 min from switching the main power OFF in Step 5 using the following procedure.
    1. Disconnect the current sensor connector.
    2. Disconnect the negative lead-acid battery terminal.
      • When disconnecting a negative lead-acid battery terminal with deformed plastic, expand the gap of the negative lead-acid battery terminal using a flathead screwdriver, and remove the terminal.
      G16702161Courtesy of MAZDA MOTORS CORP.
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