26/11/2024 05:43:37

Subframe Assembly - Rear (Remove and Install)

Correction code 30010201 2.10 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.

  • 2024-10-14: Updated torque spec for LH/RH shear plate-to-rear subframe large bolts.
  • 1134520-00-A Kit, EPB Release, Handheld
  • 1129348-00-A XP-10 Power Supply, XP-10
  • 1099645-00-B Fixture, Subframe, Model 3
  • 1140311-00-A Lever Lock, HV Connector, Model 3

Torque Specifications

Table 1. Torque Specifications: Subframe Assembly - Rear (Remove and Install)
Description Torque Value Recommended Tools Reuse/Replace Notes
Bolts that attach the LH rear brake caliper bracket to the knuckle
83 Nm (61.2 lbs-ft)
  • External Torx E18
Replace
Bolts that attach the LH rear damper at the top mount
41 Nm (30.2 lbs-ft)
  • 15 mm socket
  • 3 in extension
Reuse
Nut that attaches the rear drive unit ground strap to the body
10 Nm (7.4 lbs-ft)
  • 10 mm 12-point deep socket
Reuse
Nuts that attach the HV battery to rear drive unit harness bracket to the HV battery
10 Nm (7.4 lbs-ft)
  • 10 mm socket
  • 4 in extension
Reuse
Small bolts that attach the LH shear plate to the HV battery
35 Nm (25.8 lbs-ft)
  • 13 mm socket
  • 3 in extension
Reuse
Large bolt that attaches the LH shear plate and rear subframe to the body
130 Nm (95.9 lbs-ft)
  • 21 mm socket
  • 6 in extension
Replace
Bolts that attach the rear subframe to the body
165 Nm (121.7 lbs-ft)
  • 21 mm socket
  • 6 in extension
Replace

Remove

  1. Raise and support the vehicle. See Raise Vehicle - 2 Post Lift.
  2. Open all doors and lower the windows.
  3. Release the parking brakes. See Parking Brake - Caliper - Rear - LH (Release).
  4. Remove the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
  5. Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  6. Disconnect 12V power. See 12V/LV Power (Disconnect and Connect).
  7. Perform the vehicle electrical isolation procedure. See Vehicle HV Disablement Procedure.
  8. Remove the LH and RH rear wheels. See Wheel Assembly (Remove and Install).
  9. Remove the LH and RH suspension cover. See Cover - Rear Suspension - LH (Remove and Replace).
  10. Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
  11. Remove the rear fascia diffuser. See Diffuser - Rear Fascia (Remove and Replace).
  12. Remove the nut that attaches the rear drive unit ground strap to the body.
    Tip: Use of the following tool(s) is recommended:
    • 10 mm 12-point deep socket
  13. Remove and discard the bolt that attaches the LH rear brake caliper bracket to the knuckle, and then hang the caliper bracket on the body with an S-hook. Repeat this step on the RH rear brake caliper.
    Tip: Use of the following tool(s) is recommended:
    • External Torx E18
  14. Install a spring compressor onto the LH rear coil spring.
    Tip: Use of the following tool(s) is recommended:
    • Gedore Spring Compressor
  15. Remove the bolts (x2) that attach the LH rear damper to the top mount.
    Tip: Use of the following tool(s) is recommended:
    • 15 mm socket
    • 3 in extension
  16. Repeat steps 14 and 15 on the RH rear damper.
  17. Disconnect the electrical harness from the LH 12V subframe connectors.
  18. Release the clip that attaches the LH subframe electrical harness to the body.
  19. Repeat steps 17 and 18 on the RH side of the vehicle.
  20. Remove the rear stabilizer bar. See Stabilizer Bar - Rear (Remove and Replace).
  21. Remove the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).
  22. Position a coolant drain container under the LH rear of the HV battery.
  23. Disconnect the rear drive unit inverter inlet hose from the LH rear side of the HV battery, and then plug the male and female fittings.
  24. Position the coolant drain under the RH rear of the vehicle.
  25. Release the push clips (x2) that attach the RH rear wheel liner to the rocker panel.
  26. Release the clip, disconnect the rear drive unit coolant outlet hose to powertrain return hose, and then plug the male and female fittings.
  27. Remove the coolant drain container from under the vehicle.
  28. Remove the nut that attaches the HV battery to rear drive unit harness bracket to the HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    The number of fasteners may vary.
    Tip: Use of the following tool(s) is recommended:
    • 10 mm socket
    • 4 in extension
  29. Slide the release to unlock the HV battery rear drive unit connector handle of the rear drive unit to HV battery harness from the secured position.
  30. Fully raise the handle on the HV battery rear drive unit connector, and then remove the HV battery rear drive unit connector from the HV battery header.
  31. Position the subframe lifting tool under the rear subframe.
  32. Attach an air hose to the subframe lifting tool.
  33. With an assistant, raise the subframe lifting tool to support the rear subframe.
  34. Loop the straps over the rear subframe, hook the ends of the straps to the metal rings, and then pull the straps tight to restrain the subframe to the rear subframe lifting tool.
    Informational PurposesAn informational icon, calling your attention
    Note
    Lower the vehicle to give more slack to connect the straps to the rings, if necessary.
  35. Mark the LH and RH rear subframe bolts for realignment during re installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    You can also mark the LH and RH subframe casting and subframe bushing to the body.
  36. Release the fir tree clips that attach the coolant hoses to the LH shear plate.
  37. Remove the smaller bolts that attach the LH shear plate to the HV battery.
    Tip: Use of the following tool(s) is recommended:
    • 13 mm socket
    • 3 in extension
  38. Remove the larger bolt that attaches the LH shear plate and rear subframe to the body, and then remove the LH shear plate.
    Tip: Use of the following tool(s) is recommended:
    • 21 mm socket
    • 6 in extension
  39. Repeat step 36 through step 38for the RH shear plate.
  40. Remove and discard the bolts (x2) that attach the rear subframe to the body.
    Tip: Use of the following tool(s) is recommended:
    • 21 mm socket
    • 6 in extension
  41. With an assistant, slowly lower the subframe lifting tool to remove the rear subframe from the vehicle.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Take care not to damage HV harnesses and coolant hoses during lowering of the subframe.
  42. Disconnect the air supply from the rear subframe lifting tool.
  43. Move the rear subframe and subframe lifting tool away from the vehicle.

Install

  1. Position the subframe lifting tool and rear subframe underneath the vehicle.
  2. Connect the air line to the subframe lifting tool.
  3. With an assistant, slowly raise the rear drive unit and subframe into position.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Take care not to damage HV harnesses and coolant hoses while lifting the rear subframe.
  4. Hand-tighten new bolts (x2) that attach the rear subframe to the body.
    Informational PurposesAn informational icon, calling your attention
    Note
    The tightening of the bolts will be performed later in this procedure.
  5. Install the LH shear plate to the rear subframe and HV battery, and then hand-tighten a new bolt to attach the shear plate to the subframe.
    Informational PurposesAn informational icon, calling your attention
    Note
    The tightening of the bolt will be performed later in this procedure.
  6. Install and hand-tighten the smaller bolts that attach the LH shear plate to the HV battery.
    Informational PurposesAn informational icon, calling your attention
    Note
    The tightening of the bolts will be performed later in this procedure.
  7. Repeat steps 5 and 6 on the RH shear plate.
  8. Position the subframe to the locations as marked during removal.
    Informational PurposesAn informational icon, calling your attention
    Note
    Return the subframe to its original position as closely as possible.
  9. Torque the bolts that attach the LH and RH rear subframe to the body, and then mark them with a paint pen after torquing.
    165 Nm (121.7 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 21 mm socket
    • 6 in extension
  10. Torque the smaller bolts that attach the LH and RH shear plates to the vehicle.
    35 Nm (25.8 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 13 mm socket
    • 3 in extension
  11. Torque the large bolts that attach the LH and RH shear plates to the vehicle, and then mark them with a paint pen after torquing.
    130 Nm (95.9 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 21 mm socket
    • 6 in extension
  12. Fasten the fir tree clips that attach the coolant hoses to the LH and RH shear plates.

    LH shear plate shown, RH shear plate similar

  13. Release the straps and lower the subframe lifting tool from the vehicle.
  14. Disconnect the air line from the subframe lifting tool, and then remove the tool from underneath the vehicle.
  15. Fully raise the handle on the HV battery rear drive unit connector of the rear drive unit to HV battery harness.
  16. Install the HV connector special tool onto the HV battery rear drive unit connector.
  17. Use both hands to firmly connect the HV battery rear drive unit connector of the rear drive unit to HV battery harness to the HV battery header.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Make sure that the connector fits the header squarely and tightly, and that both retention pins enter the handle.
  18. Remove the HV connector special tool from the HV battery rear drive unit connector.
  19. While pressing the HV battery rear drive unit connector onto the HV battery header, fully lower the handle.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Make sure that the handle does not bind as it is lowered.
  20. Slide the release to lock the HV battery rear drive unit connector handle in the secured position.
  21. Verify that the HV battery rear drive unit connector is fully seated, and compare both sides of the connector that it is properly secured in place.
    Informational PurposesAn informational icon, calling your attention
    Note
    An improperly seated connector might lead to connector damage and rear drive unit problems later on.
  22. Install the nuts (x2) that attach the rear drive unit HV electrical harness bracket to the HV battery.
    10 Nm (7.4 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 10 mm socket
    • 4 in extension
    Informational PurposesAn informational icon, calling your attention
    Note
    The number of fasteners might vary on newer vehicles.
  23. Position the coolant drain beneath the RH rear of the HV battery.
  24. Remove the hose plugs, connect the rear drive unit outlet hose to the powertrain return hose, and then fasten the clip.
    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.
  25. Position the coolant drain beneath the LH rear of the HV battery.
  26. Remove the plugs from the male and female fittings, connect the rear drive unit inverter inlet hose to the LH side of the HV battery, and then fasten the clip.
    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.
  27. Fasten the barrel clip that attaches the rear drive unit inverter inlet hose to the HV battery.
  28. Remove the coolant drain container from underneath the vehicle.
  29. Install the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).
  30. Install the rear stabilizer bar. See Stabilizer Bar - Rear (Remove and Replace).
  31. Fasten the LH subframe electrical harness barrel clip to the body.
  32. Connect the electrical connector for the LH of the 12V subframe harness.
    Figure 1. LH side shown, RH similar
  33. Repeat steps 31 and 32 on the RH side of the vehicle.
  34. Install the ground strap for the rear drive unit.
    10 Nm (7.4 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 10 mm 12-point deep socket
    Informational PurposesAn informational icon, calling your attention
    Note
    Reinstall the washer if the vehicle had this washer during removal.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure that the angle of the ground strap provides enough clearance between the ground strap wire and the ABS wheel speed sensor wiring harness.
  35. Install the bolts that attach the LH rear damper at the top mount.
    41 Nm (30.2 lbs-ft)
    Tip: Use of the following tool(s) is recommended:
    • 15 mm socket
    • 3 in extension

    LH shown; RH similar.

  36. Remove the spring compressor from the LH rear coil spring.
  37. Install the LH rear suspension cover. See Cover - Rear Suspension - LH (Remove and Replace).
  38. Repeat steps 35 through 37 on the RH side of the vehicle.
  39. Install the LH and RH rear brake caliper bracket onto the knuckle, and then install the bolts that attach the caliper bracket to the knuckle.
    83 Nm (61.2 lbs-ft)

    LH rear brake caliper shown, RH rear brake caliper similar.

  40. Check the torque for any rear suspension bolts that were loosened while the rear subframe assembly was removed from the vehicle and torque as required. See Suspension - Rear (Check Torque).
  41. Install the rear fascia diffuser. See Diffuser - Rear Fascia (Remove and Replace).
  42. Install the lower clips that attach the LH and RH wheel arch liner.
  43. Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
  44. Install the LH and RH rear wheels. See Wheel Assembly (Remove and Install).
  45. Connect 12V power. See 12V/LV Power (Disconnect and Connect).
  46. Press and hold the Park button on the gear selector to release the EPB service mode.
  47. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): TEST-SELF_VCFRONT_X_THERMAL-PERFORMANCEvia Toolbox: (link)via Service Mode: Thermal ➜ Actions ➜ Test Thermal Performancevia Service Mode Plus:
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Thermal System Test
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Thermal System Test
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Thermal System Test
  48. Inspect the coolant level and top off as necessary, and then install the coolant bottle cap.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure that the coolant level is at the "MAX" line.
  49. Install the cabin intake duct. See Duct - Cabin Intake (Remove and Replace).
  50. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  51. Install the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
  52. Restore the driver and front passenger seats back to their original position.
  53. Refer to the Alignment Requirement tables to determine whether an EPAS alignment check (EC) or four wheel alignment check (AC) is necessary. If performed, add the alignment check/adjust as a separate activity. See Alignment Requirement - Suspension.