05/04/2024 14:39:59

Heat Exchanger - Rear Drive Unit (3DU) (Remove and Replace)

Correction code 40305202 2.76 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so.NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

  • 2024-04-05: Updated gearbox fluid information with link.
  • 2024-02-27: Updated gearbox fluid to KAF 1.

Remove

  1. Informational PurposesAn informational icon, calling your attention
    Note
    Rear subframe assembly components have been removed from illustrations for clarity. It is not necessary to remove the rear drive unit from the rear subframe assembly to perform this procedure.
  2. Remove the rear subframe assembly. See Subframe Assembly - Rear (Remove and Install).
  3. Release the clips (x3) that attach the coolant outlet hose to the motor and heat exchanger body.
  4. Release the clip, and then disconnect the coolant outlet hose from the heat exchanger.
  5. Release the clips (x4) that attach the coolant inlet hose to the LH mount, gearbox, and heat exchanger body.
  6. Release the clip, and then disconnect the coolant inlet hose from the heat exchanger.
  7. Remove the bolts that attach the heat exchanger to the rear drive unit, and then remove the heat exchanger from the rear drive unit.
    5 Nm (3.7 lbs-ft) +30 deg
    Informational PurposesAn informational icon, calling your attention
    Note
    The number of bolts that attach the heat exchanger to the rear drive unit (x2 or x3) might vary due to changes in production.

Install

  1. Lightly coat the heat exchanger O-rings with clean gearbox fluid.
    Informational PurposesAn informational icon, calling your attention
    Note
    Refer to Fluids and Capacities to determine which gearbox fluid is applicable.
  2. Install the heat exchanger to the rear drive unit, and then install the bolts that attach the heat exchanger to the rear drive unit.
    5 Nm (3.7 lbs-ft) +30 deg
    Informational PurposesAn informational icon, calling your attention
    Note
    The number of bolts that attach the heat exchanger to the rear drive unit (x2 or x3) might vary due to changes in production.
  3. Connect the coolant inlet hose to the heat exchanger, and then fasten the clip that attaches the hose to the heat exchanger.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Perform a push-pull test to verify that the hose is fully seated.
  4. Fasten the clips (x4) that attach the coolant inlet hose to the heat exchanger body, gearbox, and LH mount.
  5. Connect the coolant outlet hose to the heat exchanger, and then fasten the clip that attaches the hose to the heat exchanger.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Perform a push-pull test to verify that the hose is fully seated.
  6. Fasten the clips (x3) that attach the coolant outlet hose to the heat exchanger body and the motor.
  7. Install the rear subframe assembly. See Subframe Assembly - Rear (Remove and Install).
  8. Check the vehicle wheel alignment, and adjust if necessary. See Four Wheel Alignment Check.