2026-05-08

Car Computer (HW3) (Remove and Install)

Correction code 21151001 0.60 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. NOTE: See Personal Protection to make sure proper PPE is worn when performing the below procedure.

  • 2026-05-08: Updated the procedure from performing a cooling system partial coolant refill to a cooling system vacuum refill to avoid overheating.

Remove

  1. Open the front doors and lower the front windows.
  2. Move the front seat backward.
  3. Unlock the vehicle gateway. See .
  4. 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.
  5. Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  6. Disconnect LV power. See LV Power (Disconnect and Connect).
  7. Remove the RH middle A-pillar trim. See Trim - A-Pillar - Middle - LH (Remove and Replace).
  8. Remove the RH lower A-pillar trim. See Trim - A-Pillar - Lower - LH (Remove and Replace).
  9. Remove the passenger footwell cover. See Cover - Footwell - Passenger (Remove and Replace).
  10. Remove the front passenger footrest panel. See Panel - Footrest - Front Passenger (LHD) (Remove and Replace).
  11. Depress the connector lock on the underside of the connector, and then disconnect the connector to the gaming MCU.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Do not release the connector without releasing the connector lock first. Damage to the PCBA may occur if removed without releasing the connector lock.
  12. Release the connector lock, and then disconnect the connector to the connectivity module.
    Informational PurposesAn informational icon, calling your attention
    Note
    Move the release lock rearward before disconnecting the connector.
  13. Release the connector locks, and then disconnect the connectors (x6) at the LH side of the entertainment motherboard.
  14. Release the connector locks, and then disconnect the connectors (x7) at the LH side of the AP motherboard.
  15. Release the connector locks, and then disconnect the connectors (x6) at the RH side of the entertainment motherboard.
  16. Release the connector locks, and then disconnect the connectors (x3) at the RH side of the AP motherboard.
  17. Install coolant hose clamps to the coldplate hoses (x2).
    Informational PurposesAn informational icon, calling your attention
    Note
    Place coolant absorbent mats or rags around the car computer.
  18. Release the coolant hoses (x2) from the car computer coldplate assembly, and then install coolant plugs on the both hoses and car computer.
  19. Remove the bolts (x2) and nut that attach the car computer to the vehicle, and then remove the car computer from the vehicle.
    7 Nm (5.2 lbs-ft)
    8 Nm (5.9 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Clean up any residual coolant from the vehicle.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 10 mm socket

Install

  1. Position the car computer into the vehicle, and then install the bolts (x2) and nut that attach the car computer to the vehicle.
    7 Nm (5.2 lbs-ft)
    8 Nm (5.9 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    The bolts are torqued to 7 Nm. The nut is torqued to 8 Nm.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 10 mm socket
  2. Place coolant absorbent mats or rages around the car computer, remove the coolant plugs, and then secure the coolant hoses (x2) to the car computer coldplate assembly.
    Informational PurposesAn informational icon, calling your attention
    Note
    Perform a pull-push-pull test on each hose coupling.
  3. Remove the coolant hose clamps to the coldplate hoses (x2).
    Informational PurposesAn informational icon, calling your attention
    Note
    Place coolant absorbent mats or rags around the car computer. Clean any residual fluid and inspect for leaks.
  4. Connect the connectors (x3) at the RH side of the AP motherboard, and then secure the connector locks.
  5. Connect the connectors (x6) at the RH side of the entertainment motherboard, and then secure the connector locks.
  6. Connect the connectors (x7) at the LH side of the AP motherboard, and then secure the connector locks.
  7. Connect the connectors (x6) at the LH side of the entertainment motherboard, and then secure the connector locks.
  8. Connect the connector to the connectivity module, and then secure the connector lock.
    Informational PurposesAn informational icon, calling your attention
    Note
    Slide the lock underneath the connector.
  9. Connect the connector to the gaming MCU.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the connector is fully seated into the socket.
  10. Perform a cooling system vacuum refill. See Cooling System (Vacuum Refill).
  11. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  12. Install the front passenger footrest panel. See Panel - Footrest - Front Passenger (LHD) (Remove and Replace).
  13. Install the passenger footwell cover. See Cover - Footwell - Passenger (Remove and Replace).
  14. Install the RH middle A-pillar trim. See Trim - A-Pillar - Middle - LH (Remove and Replace).
  15. Install the RH lower A-pillar trim. See Trim - A-Pillar - Lower - LH (Remove and Replace).
  16. Install the RH center console side panel carpet. See Carpet - Side Panel - Center Console - LH (Remove and Replace).
  17. Install the passenger footwell cover. See Cover - Footwell - Passenger (Remove and Replace).
  18. Move the front passenger seat back to its original position.
  19. Raise the front windows and close the front doors.