Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Fuse - Cabin Heater - HV Battery- Install

Tesla Model 3 2017-2025 Service Manual / Battery System / HV Battery Electrical Components / Fuse - Cabin Heater - HV Battery (Remove and Replace) / Fuse - Cabin Heater - HV Battery- Install

Install

Fuse - Cabin Heater - HV Battery- Install

  1. Install the PTC heater fuse to the RH penthouse bus, and then install new nuts to attach the fuse to the bus. Torque 2.5 Nm

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 penthouse bus and the LH side of the PTC heater fuse body .

Note: The maximum acceptable resistance is 0.105 mΩ (105 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 RH side of the PTC heater fuse and the respective ring terminal plating.

Note: The maximum acceptable resistance is 0.145 mΩ (145 μΩ). If the resistance is above this value, escalate a Toolbox session, as appropriate.

Fuse - Cabin Heater - HV Battery- Install

  1. Install the fuse access insulator on the RH penthouse bus cover, fasten the clips that attach the insulator to the cover, and lower the high voltage controller.
  2. Install the pyrotechnic battery disconnect into the penthouse. See Pyrotechnic Battery Disconnect (Remove and Replace).

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     Fuse - Power Conversion System - HV Battery (Remove and Replace)

     Fuse - Power Conversion System - HV Battery- Remove

    SPECIAL TOOLS Ratchet, 1/4" Sq Dr, HV Insulated (1057602-00-A) Ext Bar, Wobble, 1/4" Dr, HV Insulated (1057603-00-A) Skt, 1/4" Sq Dr, 8mm, HV Insulated (1057604-00-A) Magnet, Flexible, HV Insulated,

     Fuse - Power Conversion System - HV Battery- Install

    Install Install the power conversion system fuse to the RH penthouse bus, and then install new nuts to attach the fuse to the bus. Torque 2.5 Nm Generic Measurement - Actual busbars and f

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     Breather - Rear Drive Unit (Remove and Replace)

    Remove Remove the rear subframe assembly. See Subframe Assembly - Rear (Remove and Install). Remove the breather from the rear drive unit.

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