Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Inverter - Rear Drive Unit - Install

Install

  1. Secure the ESD strap to the replacement inverter housing.

  Inverter - Rear Drive Unit - Install

  1. Inspect the condition of the gap pad on the inverter PCB. Replace the gap pad if it does not fulfill these criteria.
  • New and undamaged condition.
  • Fully covers the discharge resistor array and that no resistors are visible.
  • Clean and free of debris.
  • Evenly adhered to the inverter PCB.
  1. Install a new inverter gasket.
  2. Use an IPA wipe to clean the HV mating surfaces of the motor and inverter 3-phase terminals.
  3. Carefully align the inverter to the 2 pins in the rear drive unit, and then install the inverter to the rear drive unit. Make sure that the 3-phase terminals align during installation.

 Caution: Avoid damage to the printed circuit board of the inverter.

  Inverter - Rear Drive Unit - Install

  1. Hand-tighten the new bolts (x12) that attach the inverter to the gearbox assembly.

  Inverter - Rear Drive Unit - Install

  1. Torque the bolts in the sequence shown. Torque 5 Nm +20 deg

  Inverter - Rear Drive Unit - Install

  1. Install the new bolts (x3) that attach the 3 phase cable to the inverter assembly.
  1. Tighten the bolts to this specification. Torque 11.5 Nm
  2. Loosen the bolts 180 degrees.
  3. Tighten the bolts to this specification. Torque 5 Nm +40 deg

  Inverter - Rear Drive Unit - Install

  1. Apply a film of ATF-9 fluid to the walls of the gear case bores, and then install the new 3-phase access cover.

  Inverter - Rear Drive Unit - Install

  1. Install the bolts (x2) that attach the 3-phase access cover to the rear drive unit assembly. Torque 7.5 Nm
  2. Perform an inverter air leak test. See Inverter Air Leak Test.

  Inverter - Rear Drive Unit - Install

  1. Apply a new 3-phase access label.
  2. Remove the ESD wrist strap.
  3. Fully raise the handle on the rear drive unit HV electrical harness.

  Inverter - Rear Drive Unit - 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 inverter 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.

  Inverter - Rear Drive Unit - Install

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

  Inverter - Rear Drive Unit - Install

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

  Inverter - Rear Drive Unit - Install

  1. Install the bolt that attaches the HV harness bracket to the inverter. Torque 6 Nm

  Inverter - Rear Drive Unit - Install

  1. Connect the rear drive unit inlet hose to the inverter coolant inlet, and then fasten the clip.

 Caution: Perform a push-pull test to verify that the hose is fully seated.

  Inverter - Rear Drive Unit - Install

  1. Fasten the clip that attaches the rear drive unit inlet hose to the HV harness bracket.

  Inverter - Rear Drive Unit - Install

  1. Connect the electrical harness to the inverter low voltage connector.
  2. Install the LH rear drive unit mount. See Mount - Rear Drive Unit - LH (Remove and Replace).

  Inverter - Rear Drive Unit - Install

  1. Fasten the clips that attach the upper cooler hose to the rear drive unit.
  2. Install the rear subframe assembly. See Subframe Assembly - Rear (Remove and Install).
  3. Refill the cooling system. See Powertrain Coolant (Drain and Refill). Note: Perform the refill before the installation of the front RH wheel liner.
  4. Within Toolbox, return to the Rear Drive Inverter - Remove and Replace Autodiag, and run PROC_PM_X_RESTORE-DATA-BOOT to restore the bootloader data and run PROC_PM_X_WRITE-DRIVE-TYPE to configure the Usage ID.
  5. Use the Rear Drive Inverter - Remove and Replace Autodiag to:
  1. Redeploy the current firmware to the new inverter.
  2. Restore the required data to the new inverter.
  3. Perform the resolver learn process.  Caution: This process requires the vehicle wheels to be spinning at 55 mph (90 kph) while elevated on a lift.
  4. Perform the thermal performance self-test.
  1. Perform a four wheel alignment. See Four Wheel Alignment (Check and Adjust).

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     Powertrain Coolant - Refill

    Refill Remove the plugs from the hoses.  

    SEE MORE:

     Switch - Steering Wheel - RH (Remove and Replace)

    Remove the driver airbag. See Airbag - Driver (Remove and Replace). Disconnect the steering wheel electrical wiring harness from the connector. Disconnect the electrical harness from the LH steering wheel switch connector. Disconnect the electrical harness from the RH steering

     Module - Body Controller - Security- Remove

    Remove Open all doors and lower all windows Remove the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace). Move the driver seat and front passenger seat fully rearward. Disconnect 12V power. See 12V Power (Disconnect and Connect). Open the armrest. Remove

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