31/05/2024 10:40:57

Subframe Assembly - Rear (Remove and Install)

Correction Code 30010201

  • 2023-09-07: Updated links for 12V power disconnect and vehicle electrical isolation procedure.
  • 2023-06-21: Updated note for replacement of seized rear drive unit HV harness.
Informational PurposesAn informational icon, calling your attention
Note
This procedure is divided into separate sections based on the type of rear drive unit:
Informational PurposesAn informational icon, calling your attention
Note
Loosen suspension fasteners by hand, then use a cordless electric drill with a 3/8 in drive adapter and a 3/8 in drive air ratchet wrench.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Only technicians who have been trained in High Voltage Awareness and have completed all required certification courses (if applicable) are permitted to perform this procedure. Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
If the vehicle has air suspension, activate "Jack" mode on the touchscreen before raising and supporting the vehicle.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
If the 12V power supply is disconnected, do not attempt to open any doors with door glass in closed position. Failure to follow this instruction could result in door glass shatter.
Informational PurposesAn informational icon, calling your attention
Note
Before disconnecting the 12V power supply, ensure that the driver’s door window is fully open. Failure to follow this instruction could result in vehicle lockout.

Small RDU

Remove

  1. Prepare the vehicle for lifting:
    1. Air suspension vehicles only: Put the vehicle into Jack mode.
    2. Put the vehicle into Tow mode.
    3. Support the vehicle, but do not lift it at this time.
  2. Disconnect 12V power. See Disconnect 12V Power.
  3. Perform a vehicle HV disablement check. See Vehicle HV Disablement Procedure.
  4. Remove the rear wheels. See Wheel Assembly (Remove and Install).
  5. Raise the vehicle to working height.
  6. On both sides of the vehicle, remove the nut that secures the shock absorber to the knuckle (torque 140 Nm), but do not remove the bolt yet.
  7. On both sides of the vehicle, loosen the bolts (x2) that secure the brake caliper to the knuckle (torque 120 Nm). Remove and support the calipers.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    To avoid damage to the brake line, the brake caliper must be supported at all times.
  8. Release the red locking tabs, and then disconnect the electrical harnesses from the LH and RH parking brake connectors.
    Figure 1. Mando caliper shown; Brembo parking brake is a separate caliper
  9. Remove the mid aero shield (refer to procedure).
  10. Remove the subframe shear plates by removing the nut (torque 35 Nm), clips (x2), and screws (x3) (torque 6 Nm) that secure each shear plate to the subframe.
  11. If equipped, remove the screws (x2) that secure the rear skid plate to the subframe (torque 10 Nm).
  12. Disconnect the subframe harnesses from the body harness.
    • Vehicles built through September 2014: 4 connectors at the back of the rear subframe
    • Vehicles built after September 2014: 3 connectors above the RH side of the rear undershield
  13. On the RH side of the drive unit, disconnect the logic connector.
  14. Remove and discard the 4 screws that retain the HV cables (torque 7 Nm). Move the cables away from the drive unit.
  15. On the top RH side of the drive unit, release the ground strap from the drive unit (torque 6.5 Nm).
  16. Release the clips that secure the HV cables:
    Figure 2. 2 clips to the body
  17. Remove the coolant hoses from the LH and RH sides of the drive unit.
    1. Place a coolant drain cart near the LH side of the drive unit.
    2. Clamp the coolant output hose located between the subframe and chassis.
      Informational PurposesAn informational icon, calling your attention
      Note
      Pinch pliers steel
    3. Release the drive unit coolant outlet hose clip, and then disconnect the hose.
    4. Clamp the coolant inlet hose located between the subframe and chassis.
      Informational PurposesAn informational icon, calling your attention
      Note
      Pinch pliers steel
    5. Release the drive unit coolant inlet hose clip, and then disconnect the hose.
      Informational PurposesAn informational icon, calling your attention
      Note
      Battery coolant drain kit - 1065131-00-A
    6. Move the coolant drain cart away from the working area.
  18. If the drive unit is being removed, drain the gearbox fluid. See Gearbox Fluid - Rear Small Drive Unit (Drain and Refill).
  19. Position the powertrain table with subframe fixture beneath the vehicle subframe.
  20. Connect shop air to the powertrain table.
  21. Carefully raise the powertrain table to support the rear subframe, aligning the subframe fixture dowels with the holes at the front of the subframe.
  22. Use a paint pen to trace around each subframe mounting bolt, so that the bolts can be realigned later during the subframe installation.
  23. Use a paint pen to apply witness marks where the front/rear subframe contacts the body at each subframe mounting bolt, so that the subframe can be realigned to the body later during subframe installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    Apply the witness marks at 90 degrees so that they indicate left/right and fore/aft movement.
  24. Remove the bolts (x4) that secure the rear subframe to the body (torque 140 Nm).
  25. Carefully lower the powertrain table approximately 3 in (75 mm) to gain access to the remaining attachments.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While lowering the table, occasionally stop to make sure no hoses, harnesses, or other components are caught or tangled. Also pay extra attention to the HV battery aero shield mounting tabs.
  26. Carefully lower the powertrain table.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While raising the vehicle, have an assistant monitor the underside of the vehicle. Ensure that no components are still connected and that there is sufficient clearance so that no components are damaged.
  27. Move the powertrain table with subframe away from the vehicle.

Install

  1. Pull on the inner halfshaft cup to confirm that the LH and RH rear drive unit halfshafts are fully seated on the rear drive unit, and that the circlip is locked into place.
    Informational PurposesAn informational icon, calling your attention
    Note
    If the halfshaft detaches from the rear drive unit, then reinstall the halfshaft paying attention to the following:
    • Take care not to damage or displace the oil seals.
    • Make sure that the opening of the snap rings are facing towards the bottom of the drive unit.
    • Carefully push the halfshaft into the drive unit until there is an audible "click" from the halfshaft stub contacting the pinion shaft.
    • There will be a slight pulling sensation on the halfshaft as the halfshaft circlip locks into place.
    • Pull on the inner halfshaft cup to confirm that the circlip is locked into place.
  2. Move the powertrain table with subframe to under the vehicle.
  3. Carefully raise the powertrain table.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While raising the table, have an assistant monitor the underside of the vehicle. Make sure that there is sufficient clearance so that no components are damaged.
  4. Carefully raise the powertrain table so that the rear subframe is up against the body.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While raising the table, occasionally stop to make sure no hoses, harnesses, or other components are caught or crushed. Also pay extra attention to the HV battery aero shield mounting tabs.
  5. Install and hand-tighten the bolts (x4) that secure the rear subframe to the body (torque 140 Nm).
  6. Use a crowbar to shimmy the rear subframe with respect to the body, so that the subframe mounting bolts are centered in the tracings, and the witness marks where the subframe contacts the body align.
    Informational PurposesAn informational icon, calling your attention
    Note
    It might be necessary to align one corner and tighten the bolt, align the opposite corner and tighten the bolt, and so on in a criss-cross pattern.
  7. Torque the bolts (x4) that secure the rear subframe to the body (torque 140 Nm).
  8. Lower the powertrain table and move it out from under the vehicle.
  9. If the drive unit was removed, refill the gearbox fluid. See Gearbox Fluid - Rear Small Drive Unit (Drain and Refill).
  10. Install the coolant hoses to the LH and RH sides of the drive unit.
    1. Move the coolant drain cart to the RH side of the drive unit.
    2. Install the hose at the T-fitting, and then fasten the hose clamp.
    3. Remove the hose clamping tool.
    4. Move the coolant drain cart to the LH side of the drive unit and charger fitting.
    5. Remove the plugs from the charger fitting, install the hose to the fitting, and then fasten the hose clamp.
    6. Remove the hose clamping tool.
    7. Remove the drain cart from under the vehicle.
  11. Fasten the clips that secure the HV cables:
    Figure 3. 2 clips to the body
  12. Perform the following substeps on the drive unit:
    1. On the top RH side of the rear drive unit, install the ground strap to the drive unit (torque 6.5 Nm).
    2. Inspect the connector seals on the HV cables. If any are damaged, replace them.
    3. Apply P-80 emulsion to the connector seals.
      Warning IconA warning icon, calling your attention to a possibly risky situation
      CAUTION
      Do not apply P-80 emulsion to the HV terminals.
    4. Install the HV cables into the rear drive unit, and then install 4 new screws to secure the cables in the drive unit (torque 7 Nm).
    5. On the RH side of the drive unit, connect the logic connector.
  13. Install new O-rings (1003784-00-A or later) on the drive inverter cover and apply Silicone Lubricant (1010251-00-A) on both before installing the cover. Insert the cover at an angle to prevent damage to the O-rings. Once the left (B+) O-ring is seated, rotate the cover into position.
  14. Connect the subframe harnesses to the body harness.
    • Vehicles built through September 2014: 4 connectors at the back of the rear subframe
    • Vehicles built after September 2014: 3 connectors above the RH side of the rear undershield
  15. If equipped, install the rear skid plate to the rear subframe, and then install the screws (x2) that secure the skid plate to the subframe (torque 10 Nm).
  16. Install the subframe shear plates to the subframe, fasten the clips (x2), and then install the nut (torque 35 Nm) and screws (x3) (torque 6 Nm) that secure each shear plate to the subframe.
  17. Install the mid aero shield (refer to procedure).
  18. Connect the electrical harnesses to the LH and RH parking brake connectors and then fasten the red locking tabs to secure the connectors.
    Figure 4. Mando caliper shown; Brembo parking brake is a separate caliper
  19. Install the plastic park brake connector covers.
  20. On both sides of the vehicle, install the rear brake calipers to the rear knuckles, and then install the bolts (x2) that secure each caliper to each knuckle (torque 120 Nm).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    To avoid damage to the brake line, the brake caliper must be supported at all times.
  21. On both sides of the vehicle, install and hand-tighten the nut that secures the rear shock absorber to the rear knuckle.
  22. Remove the bolt that attaches the LH rear brake rotor to the hub.
  23. Install the hub jack adapter onto the LH rear hub and hand-tighten the lug nuts.
  24. Use an underhoist stand to support the hub jack adapter.
  25. Measure the distance between the bottom of the quarter panel and the center of the rear axle to make sure that the rear suspension is set to ride height.
  26. Tighten the bolt and nut that attach the LH rear shock absorber to the LH rear knuckle (torque 140 Nm), and then mark the bolt and nut with a paint pen.
  27. Remove the underhoist stand from underneath the LH rear suspension.
  28. Remove the lug nuts that attach the hub jack adapter, and then remove the hub jack adapter from the hub.
  29. Install the bolt that attaches the LH rear brake rotor to the hub.
  30. Repeat step x through y for the RH side of the vehicle.
  31. Install the rear wheels. See Wheel Assembly (Remove and Install).
  32. Connect 12V power. See Disconnect 12V Power.
  33. Perform a coolant air purge and top off the coolant.
    1. Open the coolant reservoir cap and fill the reservoir up to the NOM line.
    2. Connect a laptop with Toolbox 3 to the vehicle.
    3. In Toolbox 3, click the Actions tab, type "Coolant air purge" into the search field, click PROC_THC_X_COOLANT-AIR-PURGESearch for routine in ToolboxCoolant Air PurgeThermal / Actions - Coolant Air Purge, click Run, and allow the routine to complete.
      Informational PurposesAn informational icon, calling your attention
      Note
      While the routine is running, monitor the coolant reservoir and add coolant as needed.
    4. Disconnect Toolbox and remove the laptop from the vehicle.
    5. Install the cap on the coolant reservoir.
  34. Remove the vehicle from the 2-post lift.
  35. 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.

Large RDU

Remove

  1. Prepare the vehicle for lifting:
    1. Air suspension vehicles only: Put the vehicle into Jack mode.
    2. Put the vehicle into Tow mode.
    3. Support the vehicle, but do not lift it at this time.
  2. Disconnect 12V power. See Disconnect 12V Power.
  3. Verify correct operation of the multimeter.
    Informational PurposesAn informational icon, calling your attention
    Note
    Set multimeter to DC voltage. Confirm multimeter is properly measuring voltage by testing the 12v battery.
  4. Remove the rear wheels. See Wheel Assembly (Remove and Install).
  5. Raise the vehicle to working height.
  6. On both sides of the vehicle, remove the nut that secures the shock absorber to the knuckle (torque 140 Nm), but do not remove the bolt yet.
  7. On both sides of the vehicle, loosen the bolts (x2) that secure the brake caliper to the knuckle (torque 120 Nm). Remove and support the calipers.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    To avoid damage to the brake line, the brake caliper must be supported at all times.
  8. Release the red locking tabs, and then disconnect the electrical harnesses from the LH and RH parking brake connectors.
    Figure 5. Mando caliper shown; Brembo parking brake is a separate caliper
  9. Remove the LH and RH subframe shear plates by removing the nut (torque 35 Nm), clips (x2), and screws (x3) (torque 6 Nm) that attach each shear plate to the subframe.
  10. Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
  11. On both sides of the vehicle, remove the nuts (x3) that attach the mid aeroshield reinforcement.
    Informational PurposesAn informational icon, calling your attention
    Note
    Nuts 10mm, torque 6 Nm.
    Figure 6. LH side shown, RH side similar
  12. If equipped, remove the screws (x2) that secure the rear skid plate to the subframe (torque 10 Nm).
  13. Disconnect the subframe harnesses from the body harness.
    • Vehicles built through September 2014: 4 connectors at the back of the rear subframe
    • Vehicles built after September 2014: 3 connectors above the RH side of the rear undershield
  14. Perform a vehicle HV disabelement check at the rear drive unit inverter. See Checking for High Voltage at the Drive Inverter.
  15. Remove and discard the 2 fasteners that secure the HV cables to the drive unit (torque 9 Nm). Do not remove the cables at this time.
  16. Release the clips that secure the HV cables:
    Figure 7. 2 clips to the subframe
  17. Remove the coolant hose from the LH and RH sides of the drive unit.
    1. Place a coolant drain cart under the LH side of the drive unit.
    2. Clamp the LH rear drive unit coolant hose.
      Figure 8. LH shown; RH similar
    3. Remove the hose, and then plug the drive unit.
      Informational PurposesAn informational icon, calling your attention
      Note
      Coolant Hose Plug Kit - 1135762-00-A
    4. Repeat these substeps on the RH side of the drive unit.
    5. Move the coolant drain cart away from the working area.
  18. Use a paint pen to trace around each subframe mounting bolt, so that the bolts can be realigned later during installation of the subframe.
  19. Position the powertrain table with subframe fixture beneath the vehicle subframe.
  20. If the drive unit is being removed, drain the gearbox fluid. See Gearbox Fluid - Large Rear Drive Unit (Remove and Replace).
  21. Connect shop air to the powertrain table.
  22. Carefully raise the powertrain table to support the rear subframe, aligning the subframe fixture dowels with the holes at the front of the subframe.
  23. Use a paint pen to apply witness marks where the front/rear subframe contacts the body at each subframe mounting bolt, so that the subframe can be realigned to the body later during subframe installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    Apply the witness marks at 90 degrees so that they indicate left/right and fore/aft movement.
  24. Remove the bolts (x4) that attach the rear subframe to the body (torque 140 Nm).
  25. Carefully lower the powertrain table approximately 3 in (75 mm) to gain access to the remaining attachments.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While lowering the table, occasionally stop to make sure no hoses, harnesses, or other components are caught or tangled. Also pay extra attention to the HV battery aero shield mounting tabs.
  26. Release the remaining attachments to the drive unit:
    1. On the top RH side of the drive unit, remove and discard the bolt that attaches the ground strap to the drive unit (torque 6.5 Nm).
    2. Near the ground strap bolt hole, remove the bolt that attaches the HV cable bracket to the rear drive unit (torque 6.5 Nm), and then remove the bracket from the vehicle.
    3. On both sides of the vehicle, remove the bolt that attaches the shock absorber to the knuckle (torque 140 Nm).
      Informational PurposesAn informational icon, calling your attention
      Note
      If necessary, raise or lower the powertrain table to reduce tension on the joint.
      Figure 9. LH shown; RH similar
    4. Pull the HV cables out of the drive unit.
      Informational PurposesAn informational icon, calling your attention
      Note
      In case the HV cables are seized inside the rear drive unit and cannot be removed, cut the cables to enable subframe removal. If the vehicle does not have a Rapid Splitter, install a new rear drive unit to HVJB HV harness while the subframe is removed. See HV Harness - Rear Drive Unit to HVJB (Subframe Removed) (Remove & Replace)If the vehicle has a Rapid Splitter, install a new rapid splitter while the subframe is removed. See HV Rapid Splitter Vehicle Side (Remove and Replace).
  27. Carefully lower the powertrain table.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While raising the vehicle, have an assistant monitor the underside of the vehicle. Ensure that no components are still connected and that there is sufficient clearance so that no components are damaged.
  28. Move the powertrain table with subframe away from the vehicle.

Install

  1. Pull on the inner halfshaft cup to confirm that the LH and RH rear drive unit halfshafts are fully seated on the rear drive unit, and that the circlip is locked into place.
    Informational PurposesAn informational icon, calling your attention
    Note
    If the halfshaft detaches from the rear drive unit, then reinstall the halfshaft paying attention to the following:
    • Take care not to damage or displace the oil seals.
    • Make sure that the opening of the snap rings are facing towards the bottom of the drive unit.
    • Carefully push the halfshaft into the drive unit until there is an audible "click" from the halfshaft stub contacting the pinion shaft.
    • There will be a slight pulling sensation on the halfshaft as the halfshaft circlip locks into place.
    • Pull on the inner halfshaft cup to confirm that the circlip is locked into place.
  2. Drive Units built before October 2014 only: Make sure that no harnesses or cable ties press into the acoustic padding upon reinstallation. Refer to TN-14-40-002, Noise Path for Motor Hum, for more information.
    1. Make sure that the electrical harness does not rest on top of either of the arches on the subframe.
      Informational PurposesAn informational icon, calling your attention
      Note
      Rotating the clip that secures the harness to the subframe helps to position the harness properly.
      1 Correct: Clip rotated.
      2 Correct: Harness routed inboard of subframe.
      3 Incorrect: Harness routed on top of subframe.
    2. Replace the cable ties that secure the HV cables to the subframe. Make sure that the electrical harness is routed beneath the cable ties.
    3. Make sure that the rearmost section of the electrical harness is secured to the subframe with cable ties. The harness should extend out from the rear of the subframe as little as possible.
      Figure 10. LH side
      1 Correct: The harness is secure and does not extend past the rear of the subframe.
      2 Incorrect: The harness is loose and extends past the rear of the subframe.
      Figure 11. Middle
      1 Correct: The harness is secured to the rear of the subframe.
      2 Incorrect: The harness is not secured to the rear of the subframe.
      Figure 12. RH side
      1 Correct:The harness is secure and does not extend past the rear of the subframe.
      2 Incorrect:The harness is loose and extends past the rear of the subframe.
    4. Make sure that when securing the HV cables to the subframe, the ratchets on the cable ties do not press into the acoustic padding
  3. Move the powertrain table with subframe to under the vehicle.
  4. Carefully raise the powertrain table.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While raising the table, have an assistant monitor the underside of the vehicle. Make sure that there is sufficient clearance so that no components are damaged.
  5. Install the remaining attachments to the drive unit:
    1. Install the HV cables into the drive unit.
      Informational PurposesAn informational icon, calling your attention
      Note
      After connecting the HV cables to the drive unit, reach above the drive unit and pull the cables as far forward as possible.
    2. On both sides of the vehicle, install the bolt that attaches the shock absorber to the knuckle.
      Informational PurposesAn informational icon, calling your attention
      Note
      If necessary, raise or lower the powertrain table to reduce tension on the joint.
      Figure 13. LH shown; RH similar
    3. On the top RH side of the rear drive unit, install the HV cable bracket to the rear drive unit, install the bolt that attaches the bracket to the drive unit (torque 6.5 Nm).
    4. On the top RH side of the rear drive unit, install a new bolt to attach the ground strap to the drive unit (torque 6.5 Nm).
  6. Carefully raise the powertrain table so that the rear subframe is up against the body.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    While raising the table, occasionally stop to make sure no hoses, harnesses, or other components are caught or crushed. Also pay extra attention to the HV battery aero shield mounting tabs.
  7. Install and hand-tighten the bolts (x4) that secure the rear subframe to the body (torque 140 Nm).
  8. Use a crowbar to shimmy the rear subframe with respect to the body, so that the subframe mounting bolts are centered in the tracings, and the witness marks where the subframe contacts the body align.
    Informational PurposesAn informational icon, calling your attention
    Note
    It might be necessary to align one corner and tighten the bolt, align the opposite corner and tighten the bolt, and so on in a criss-cross pattern.
  9. Torque the bolts (x4) that secure the rear subframe to the body (torque 140 Nm).
  10. Lower the powertrain table and move it out from under the vehicle.
  11. If the drive unit was removed, refill the gearbox fluid. See Gearbox Fluid - Large Rear Drive Unit (Remove and Replace).
  12. Install the coolant hoses to the LH and RH sides of the drive unit.
    1. Move the coolant drain cart to the LH side of the rear drive unit.
    2. Remove the plug from the rear drive unit LH fitting, and then install the hose.
      Figure 14. LH shown; RH similar
    3. Remove the hose clamping tool from the rear drive unit LH coolant hose.
    4. Repeat these substeps on the RH side of the drive unit.
    5. Remove the coolant drain cart out from under the vehicle.
  13. Fasten the clips that secure the HV cables:
    Figure 15. 2 clips to the subframe
  14. Install 2 new fasteners to secure the HV cables in the rear drive unit (torque 9 Nm).
  15. Install new O-rings (1003784-00-A or later) on the drive inverter cover and apply Silicone Lubricant (1010251-00-A) on both before installing the cover. Insert the cover at an angle to prevent damage to the O-rings. Once the left (B+) O-ring is seated, rotate the cover into position.
  16. Connect the subframe harnesses to the body harness.
    • Vehicles built through September 2014: 4 connectors at the back of the rear subframe
    • Vehicles built after September 2014: 3 connectors above the RH side of the rear undershield
  17. If equipped, install the rear skid plate to the rear subframe, and then install the screws (x2) that secure the skid plate to the subframe (torque 10 Nm).
  18. Install the subframe shear plates to the subframe, fasten the clips (x2), and then install the nut (torque 35 Nm) and screws (x3) (torque 6 Nm) that secure each shear plate to the subframe.
  19. On both sides of the vehicle, install the nuts (x3) that attach the mid aeroshield reinforcement.
    Informational PurposesAn informational icon, calling your attention
    Note
    Nuts 10mm, torque 6 Nm.
    Figure 16. LH side shown, RH side similar
  20. Install the mid aero shield. See Panel - Aero Shield - Mid (Remove and Replace).
  21. Connect the electrical harnesses to the LH and RH parking brake connectors and then fasten the red locking tabs to secure the connectors.
    Figure 17. Mando caliper shown; Brembo parking brake is a separate caliper
  22. Install the plastic park brake connector covers.
  23. On both sides of the vehicle, install the rear brake calipers to the rear knuckles, and then install the bolts (x2) that secure each caliper to each knuckle (torque 120 Nm).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    To avoid damage to the brake line, the brake caliper must be supported at all times.
  24. On both sides of the vehicle, install and hand-tighten the nut that secures the rear shock absorber to the rear knuckle.
  25. Remove the bolt that attaches the LH rear brake rotor to the hub.
  26. Install the hub jack adapter onto the LH rear hub and hand-tighten the lug nuts.
  27. Use an underhoist stand to support the hub jack adapter.
  28. Measure the distance between the top of the upper fore link to the bolt on the frame rail to make sure that the rear suspension is set to ride height.
    Informational PurposesAn informational icon, calling your attention
    Note
    Distance should be 85 mm +/- 5 mm.
  29. Tighten the bolt and nut that attach the LH rear shock absorber to the LH rear knuckle (torque 140 Nm), and then mark the bolt and nut with a paint pen.
  30. Remove the underhoist stand from underneath the LH rear suspension.
  31. Remove the lug nuts that attach the hub jack adapter, and then remove the hub jack adapter from the hub.
  32. Install the bolt that attaches the LH rear brake rotor to the hub.
  33. Repeat step 25 through 32 for the RH side of the vehicle.
  34. Install the rear wheels. See Wheel Assembly (Remove and Install).
  35. Connect 12V power. See Disconnect 12V Power.
  36. Perform a coolant air purge and top off the coolant.
    1. Open the coolant reservoir cap and fill the reservoir up to the NOM line.
    2. Connect a laptop with Toolbox 3 to the vehicle.
    3. In Toolbox 3, click the Actions tab, type "Coolant air purge" into the search field, click PROC_THC_X_COOLANT-AIR-PURGESearch for routine in ToolboxCoolant Air PurgeThermal / Actions - Coolant Air Purge, click Run, and allow the routine to complete.
      Informational PurposesAn informational icon, calling your attention
      Note
      While the routine is running, monitor the coolant reservoir and add coolant as needed.
    4. Disconnect Toolbox and remove the laptop from the vehicle.
    5. Install the cap on the coolant reservoir.
  37. Remove the vehicle from the 2-post lift.
  38. 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.