2025-03-20

Car Computer - LHD - Ap4 (Remove and Replace)

Correction code 2110010102 FRT 0.80 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.

  • 2025-03-13: Added 3rd party security credentials check.

Torque Specifications

Table 1. Torque Specifications: Car Computer - LHD - Ap4 (Remove and Install)
Description Torque Value Recommended Tools Reuse/Replace Notes
Bolts (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 ground strap to the car computer
4 Nm (2.9 lbs-ft)
  • Ratchet/torque wrench
  • Torx T25 socket
 Replace 1813873-00-A
Nuts (x2) that attach the car computer to the bulkhead
15 Nm (11.1 lbs-ft)
  • Ratchet/torque wrench
  • 13 mm deep socket
 Reuse

Remove

  1. Remove the RH instrument panel end cap. See Instrument Panel - End Cap - Substrate - LH (Remove and Replace).
  2. Remove RH lower A pillar trim. See A Pillar Lower Trim - LH (Remove and Replace).
  3. Remove the RH footwell hush panel. See Hush Panel - Footwell - Front Passenger (Remove and Replace).
  4. Remove the RH console side panel. See Console Side Panel RH (Remove and Replace).
  5. Connect a laptop with Toolbox 3 to the vehicle. See Toolbox 3 (Connect and Disconnect).
  6. Click on Dashboards > Car Computer Replacement and on the "Getting Started" page, click on Next Step.
  7. On the "Backup & Factory Reset" page, click Next Step and follow the prompts to perform a profile backup and factory reset on the car computer.
    Informational PurposesAn informational icon, calling your attention
    Note
    The car computer will reboot several times during this step.
  8. Once the "Replace" page appears, the car computer can be replaced.
  9. Disconnect LV battery power. See LV Power (Disconnect and Connect).
  10. Remove the fresh air intake duct. See Duct - Air Intake (Remove and Replace).
  11. Place absorbent material below the car computer coolant hose connections to collect any spilled coolant.
  12. 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.
  13. Install the car computer fluid port plug over the car computer coolant fittings.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 1119171-00-A Plug,Car Computer Fluid Port
  14. Remove bolts (x2) 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
  15. Disconnect the glove box USB connector from the car computer.
  16. Disconnect the connectors (x3) on the front side of the car computer.
  17. Release the clips (x3) that attach the electrical harness to the lower of the car computer.
  18. 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
  19. Remove the nuts (x2) 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 deep socket
  20. Partially remove the car computer to access connectors.
  21. Disconnect the connectors (x6) on the left side of the car computer.
  22. Disconnect the connectors (x6) on the right side of the car computer, and then remove the car computer from the vehicle.

Install

  1. Pick up a new car computer from the package and place it on a suitable table.
  2. Take out a piece of absorbent mat and cut a square hole in the middle.
    Informational PurposesAn informational icon, calling your attention
    Note
    The size of the hole should expose in and out hose of car computer.
  3. Put the absorbent mat onto the car computer.
  4. Remove the car computer plug.
  5. Insert flexible funnel into car computer one hose.
  6. Pre-fill coolant into car computer prior for installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    Observe from outlet of the coolant hose and do not let the coolant overflow.
  7. Remove flexible funnel upwards.
    Informational PurposesAn informational icon, calling your attention
    Note
    Be careful to avoid the coolant dropping onto car computer.
  8. Install the car computer coolant plug again.
  9. Remove the absorbent mat from the car computer.
  10. Remove and discard the bolt that attaches the new 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
  11. Place the car computer into the vehicle, and then connect the connectors (x6) on the right side of the car computer.
  12. Connect the harness connectors on the left side of the car computer.
  13. Slide the car computer into position on the bulkhead.
  14. Install the nuts (x2) 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 deep socket
  15. 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
  16. Connect the connectors (x3) on the front side of the car computer.
  17. Connect the glove box USB connector to the car computer.
  18. Install the clips (x3) that attach the electrical harness to the lower of the car computer.
  19. Install the bolts (x2) that attach the car computer to the bulkhead.
    15 Nm (11.1 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    The installation bracket of the car computer has no threads and requires self tapping bolts for installation. Be careful not to tilt during the installation of bolts.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • Ratchet/torque wrench
    • 13 mm socket
  20. Remove the plugs (x2) from the car computer coolant hoses.
  21. Remove the car computer fluid port plug from the car computer.
  22. 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.
  23. Remove the absorbent material from below the car computer coolant hose connection points.
  24. Connect the first responder loop and leave LV battery disconnected.
  25. Connect LV battery maintainer charger. See LV Maintainer (Maintenance).
  26. Select Connect Locally and then choose Yes, Resume to reconnect to vehicle using Toolbox 3.0.
  27. For Third Party repairs only: Enter the vehicle security professional login credentials that are required in order to proceed to the "Associate Car Computer" section.
    Informational PurposesAn informational icon, calling your attention
    Note
    Parts considered security and/or theft-relevant, or which may require special programming and/or setup, are only able to be configured by automotive professionals that are registered with a vehicle security accreditation organization, or by Tesla Service Technicians.
  28. Associate new car computer with vehicle VIN.
    Informational PurposesAn informational icon, calling your attention
    Note
    Confirm the picture you took for the serial number matches the serial number displayed on the screen, this step will take a few minutes, vehicle will reboot several times.
  29. Click Start Part Replacement OTA to deploy a software update to the vehicle.
    Informational PurposesAn informational icon, calling your attention
    Note
    If necessary, Reconnect the Toolbox connection.
  30. In Toolbox, click Next Page to go to the "Restore" page, and then follow the prompts to restore the vehicle profile.
  31. Disconnect the laptop from the vehicle.
  32. Disconnect low-voltage battery maintainer charger and connect LV battery.
  33. Use the vehicle touchscreen to install the software package. See Software Reinstall - Touchscreen.
  34. Remove the coolant bottle cap, and fill the coolant to the a proper level.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure that the coolant level is at the "Max" line.
    Informational PurposesAn informational icon, calling your attention
    Note
    Loss of coolant greater than 1L requires coolant vacuum fill.
  35. Unlock the gateway. See Gateway (Unlock).
  36. Perform the following routine using Service Mode or Toolbox (see ): TEST_VCFRONT_X_THERMAL-COOLANT-AIR-PURGEvia Toolbox: (link)via Service Mode:
    • Thermal ➜ Actions ➜ Coolant Purge Stop or Coolant Purge Start
    • Thermal ➜ Coolant System ➜ Coolant Purge Start
    via Service Mode Plus:
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ Coolant Air Purge
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Coolant Air Purge
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Coolant Air Purge
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Coolant Air Purge
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Coolant Air Purge
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Coolant Air Purge
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure vehicle is not in Drive, shifting the vehicle into Drive will stop this routine. The test will last approximately 10 mins. The test will vary speeds from 3500-6500 RPM (idle speed = ~1500 RPM) and actuate the valve between series and parallel. If speed hovers at 7000 RPM, it indicates the pump is air locked, perform the vacuum fill again. Continue to add coolant and purge until the coolant level reaches between the NOM and MAX Lines on the bottle.
  37. Install the RH front console side panel. See Console Side Panel RH (Remove and Replace).
  38. Install the RH footwell hush panel. See Hush Panel - Footwell - Front Passenger (Remove and Replace).
  39. Install RH lower A pillar trim. See A Pillar Lower Trim - LH (Remove and Replace).
  40. Install the RH instrument panel end cap. See Instrument Panel - End Cap - Substrate - LH (Remove and Replace).
  41. 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.
  42. Install the fresh air intake duct. See Duct - Air Intake (Remove and Replace).
  43. Install the HEPA filter assembly. See Service Kit - Hepa And Carbon Filters (Remove and Replace).
  44. Install the rear aero shield panel. See Underhood Apron - Rear (Remove and Replace).
  45. Exit Service Mode. See Service Mode.
  46. Raise LH front window and close LH front door.