Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Guide - Probing - HV Battery- Install

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

Install

  1. Wipe up any spilled coolant.

Caution: Spilled coolant can create an electrical path.

  1. Install the HV battery probing guide into the penthouse, and then fasten the clips that attach the guide to the HV battery.

  1. Install the clip that attaches the HV battery penthouse harness to the HV battery fast charge contactor.
  2. Install the power conversion system coolant output tube. See Tube - Output - Coolant - Power Conversion System (Remove and Replace).

Caution:

Make sure that the coolant output tube is securely connected by firmly pressing down on the fittings, verify that both clips have fully engaged the barb on the power conversion system and battery flange, and then pull up on the fittings to check retention.

  1. Perform a penthouse coolant leak test. See Penthouse Coolant Leak Test.
  2. Connect the 12V auxiliary battery negative terminal only. Torque 6 Nm

Caution:  Do not follow the procedure to connect 12V power at this time

  1. Connect a 12V charger to the 12V auxiliary battery terminals.
  2. Refill the coolant. See Penthouse Coolant (Drain and Refill).
  3. On the touchscreen, touch Controls > Safety & Security > Vehicle Power > Power Off.
  4. Disconnect the 12V charger from the 12V auxiliary battery terminals.
  5. Disconnect the 12V auxiliary battery negative terminal.
  6. Install the HV battery negative contactor. See Contactor - Negative - HV Battery (Remove and Replace).

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    Install Use an IPA wipe to clean the mating surfaces of the positive ring terminal to the positive busbar, and the negative ring terminal to the negative busbar. Install the HV battery fast

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    Remove Disconnect 12V power. See 12V Power (Disconnect and Connect). Remove the center console decor trim. See Decor Trim - Center Console (Remove and Replace). Remove the screws and release the tabs that attach LH and RH bright strips to the center console, and then remove the strips

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