Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Pyrotechnic Battery Disconnect- Install

Tesla Model 3 2017-2024 Service Manual / Battery System / HV Battery Electrical Components / Pyrotechnic Battery Disconnect (Remove and Replace) / Pyrotechnic Battery Disconnect- Install

Install

Pyrotechnic Battery Disconnect- Install

  1. Remove the dummy disconnect from where the pyrotechnic battery disconnect will install.
  2. Use an IPA wipe to clean the HV mating surfaces of the shunt, busbar, and the pryotechnic battery disconnect.

Pyrotechnic Battery Disconnect- Install

  1. Position the pyrotechnic battery disconnect into the HV battery for installation. Make sure to align the pins of the connector with the new pyrotechnic battery disconnect.

Pyrotechnic Battery Disconnect- Install

  1. Install the new bolts that attach the pyrotechnic battery disconnect to the HV battery, and then mark the bolts with a paint pen after they are torqued. Torque 9 Nm

Pyrotechnic Battery Disconnect- Install

  1. Use the Hioki resistance meter to measure the resistance at the HV joint between the newly-installed pyrotechnic battery disconnect and the LH busbar.

Note: The maximum acceptable resistance is 0.060 mΩ (60 μΩ). If the resistance is above this value, escalate a Toolbox session, as appropriate.

Generic Measurement - Actual busbars and fasteners might appear different Generic Measurement - Actual busbars and fasteners might appear different

  1. Use the Hioki resistance meter to measure the resistance at the HV joint between the newly-installed pyrotechnic battery disconnect and the shunt.

Note: The maximum acceptable resistance is 0.045 mΩ (45 μΩ). If the resistance is above this value, escalate a Toolbox session, as appropriate.

1st Generation 1st Generation

2nd Generation 2nd Generation

  1. Install the pyrotechnic battery disconnect shunt insulator(s).
  2. Remove the penthouse service cover from the penthouse.
  3. Install the penthouse cover. See Cover - Penthouse (Remove and Replace).

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