Tesla Model 3 Owners & Service Manuals

Tesla Model 3: HV Header - HV Battery- Install

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

Install

HV Header - HV Battery- Install

  1. Install the HV header onto the HV battery.

Note: Push and pull on the header to make sure it is secured.

HV Header - HV Battery- Install

  1. Install and hand-tighten the bolts that attach the HV header to the HV battery
  2. Tighten the bolts to proper torque.  Torque 10 Nm
  3. Fully raise the handle on the rear drive unit HV electrical harness.

HV Header - HV Battery- Install

  1. Attach the HV connector lever lock onto the back of the HV electrical harness.
  2. Firmly connect the HV electrical harness to the HV battery connector.

Caution:  Make sure that the harness fits the connector squarely and tightly.

  1. While pressing the harness to the connector, remove the HV connector lever lock.

HV Header - HV Battery- Install

  1. While pressing the harness to the connector, fully lower the handle.

HV Header - HV Battery- Install

  1. Slide the release to lock the HV electrical harness.

HV Header - HV Battery- Install

  1. Install the nuts that attach the rear drive unit HV electrical harness bracket to the HV battery. Torque 10 Nm

HV Header - HV Battery- Install

  1. Fasten the clips that attach the RH inner HV battery return hose to the HV battery.
  2. Install the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).
  3. Perform a penthouse air leak test. See Penthouse Air Leak Test.
  4. Connect 12V power. See 12V Power (Disconnect and Connect).

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