2026-05-07

Car Computer - RHD - HW4 (Remove and Install)

Correction code 2110012101 FRT 0.78 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and FRT listed above 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. NOTE: See Personal Protection to make sure you are wearing proper PPE when performing the procedure below. NOTE: See Ergonomic Precautions for safe and healthy working practices.

  • 2026-05-07: Added the coolant vacuum refill step to avoid overheating.

Torque Specifications

Table 1. Torque Specifications: Car Computer - RHD - HW4 (Remove and Install) / Car Computer - RHD - HW4 (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Nuts (x2) that attach the car computer to the bulkhead
15 Nm (11.1 lbs-ft)
  • Ratchet/torque wrench
  • 13 mm socket
 Reuse
Bolt that attaches the car computer to the bulkhead
15 Nm (11.1 lbs-ft)
  • Ratchet/torque wrench
  • 13 mm socket
 Reuse
Bolt that attaches the ground strap to the car computer
4 Nm (2.9 lbs-ft)
  • Ratchet/torque wrench
  • Torx T25 socket
 Reuse
Nut that attaches the car computer to the bulkhead
15 Nm (11.1 lbs-ft)
  • Ratchet/torque wrench
  • 13 mm deep socket
 Reuse

Remove

  1. Enter Service Mode. See Service Mode.
  2. Unlock the vehicle gateway. See Gateway (Unlock).
  3. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN-COOLANTvia Toolbox:(link)
    Informational PurposesAn informational icon, calling your attention
    Note
    This routine has a time limit of 5 hours. If it takes longer than 5 hours, perform this step again.
  4. Disconnect the LV battery and first responder loop. See LV Power (Disconnect and Connect) (Modify).
  5. Place absorbent material below the car computer coolant hose connections to collect any spilled coolant.
  6. Release the spring clips (x2) and disconnect the inner and the outer coolant hose to the car computer mount, and plug the ends of fittings as soon as possible.
    Informational PurposesAn informational icon, calling your attention
    Note
    Loss of coolant greater than 1L requires coolant vacuum fill.
  7. Install the car computer fluid port plug to the inlet and outlet of the car computer.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 1119171-00-A Plug,Car Computer Fluid Port
  8. Remove the nuts (x2) and bolt that attach the car computer to the bulkhead.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • 13 mm socket
  9. Remove the LH lower A pillar trim. See Trim - A-Pillar - Lower - LH (Remove and Replace).
  10. Remove the LH console side panel. See Side Panel - Front - Center Console - LH (Remove and Replace).
  11. Remove the passenger air wave duct. See Instrument Panel - RHD - Air Wave Duct - Left (Remove and Install).
  12. Disconnect the connectors (x3) on the front side of the car computer.
  13. Release the clips (x2) that attach the electrical harness to the lower of the car computer.
  14. Remove and discard the bolt that attaches the ground strap to the car computer.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • Torx T25 socket
  15. Remove the nut that attaches the car computer to the bulkhead.
    Informational PurposesAn informational icon, calling your attention
    Note
    Gently push the foam carpet to access and remove the nut.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • 13 mm deep socket
  16. Partially remove the car computer to access connectors.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Avoid straining harness.
  17. Disconnect the connectors (x6) on the left side of the car computer.
  18. Disconnect the connectors (x6) on the right side of the car computer, and then remove the car computer from the vehicle.

Install

  1. Place the car computer into the vehicle, and then connect the connectors (x6) on the right side of the car computer.
  2. Connect the connectors (x6) on the left side of the car computer.
  3. Place the car computer into position on the bulkhead.
  4. Install the nut that attaches the car computer to the bulkhead.
    15 Nm (11.1 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Gently push the foam carpet to install the nut.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • 13 mm deep socket
  5. Install a new bolt that attaches the ground strap to the car computer.
    4 Nm (2.9 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • Torx T25 socket
  6. Install the clips (x2) that attach the electrical harness to the lower of the car computer.
  7. Connect the connectors (x3) on the front side of the car computer.
  8. Install the nuts (x2) and bolt that attach the car computer to the bulkhead.
    15 Nm (11.1 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • 13 mm socket
  9. Remove the plugs (x2) from the car computer coolant hoses.
  10. Remove the car computer fluid port plug from the car computer.
  11. Attach the hoses to the car computer coolant inlet and outlet, and then engage the spring clips (x2).
    Informational PurposesAn informational icon, calling your attention
    Note
    Perform a push-pull-push test to ensure the hoses are fully seated.
    Informational PurposesAn informational icon, calling your attention
    Note
    Loss of coolant greater than 1L requires coolant vacuum fill.
  12. Remove the absorbent material from below the car computer coolant hose connection points.
  13. Perform a cooling system vacuum refill. See Cooling System - Vacuum Refill (Test/Adjust).
  14. Install the passenger air wave duct. See Instrument Panel - RHD - Air Wave Duct - Left (Remove and Install).
  15. Install the LH console side panel. See Side Panel - Front - Center Console - LH (Remove and Replace).
  16. Install the LH lower A pillar trim. See Trim - A-Pillar - Lower - LH (Remove and Replace).
  17. Move the LH front seat back to its original position.
  18. Install the HEPA filter assembly. See HEPA Filter Assembly (Remove and Replace).
  19. Raise all windows and close all doors.