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Home >> Tesla >> 2019 >> Model S Performance >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Motor Systems >> Rear Drive Unit -- Model S >> Rear Drive Unit Assembly >> Drive Unit - Rear - Small - Remove And Replace >> Installation
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Drive Unit - Rear - Small - Remove And Replace: Installation

  1. Install the small rear drive unit. See DRIVE UNIT - REAR - SMALL (REMOVE AND INSTALL) .
  2. Update the vehicle firmware. See Firmware Update .
  3. Connect a laptop to the diagnostic port of the vehicle, and then use Toolbox 3 to locally connect to the vehicle. See TOOLBOX 3 - CONNECT AND DISCONNECT .
  4. Unlock the vehicle gateway for diagnostic communication. See GATEWAY UNLOCK .
  5. Using Toolbox 3:
    1. Select the Actions  tab and search for "immobilizer reset".
    2. Select the ODIN routine PROC_DI_X_IMMOBILIZER-RESET, and then click the link of the routine
    3. Click RUN,  and allow the routine to complete.
  6. For China, Japan and Korea only: Carefully remove the old motor label from the hood, and install a new motor label to match the new motor information.
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