2025-03-18

Car Computer (Remove and Replace)

Code de correction 21153202 (HW3) 21153302 (HW4) FRT 0.78 0.66 REMARQUE : À moins d’indications explicites contraires dans la procédure, le code de correction et le temps forfaitaire ci-dessus représentent tout le travail à être fait pour cette procédure, notamment les procédures connexes. N’appliquez pas plusieurs codes de correction à la fois, à moins qu’il vous soit explicitement indiqué de le faire. REMARQUE : Consultez Temps forfaitaires pour en apprendre plus à propos des temps forfaitaires et de leur création. Vous pouvez transmettre par courriel vos commentaires relatifs aux valeurs des temps forfaitaires à ServiceManualFeedback@tesla.com. REMARQUE : Consultez Protection individuelle pour vous assurer de porter l’équipement de protection individuelle adéquat lors vous effectuez la procédure ci-dessous. Voir Précautions ergonomiques pour consulter les pratiques de travail sécuritaires et saines.

  • 2025-03-13: Added 3rd party security credentials check.
  • 2024-12-17: Added instructions on Ethernet Diagnostics retrofit for Model S with HW3 car computer
  • 2024-10-17: Added instruction for car computer disposal.
  • 2024-09-06: Added owner authorization request and LV maintainer steps.

Replace Car Computer

  1. Connect a laptop with Toolbox 3 to the vehicle. See Toolbox 3.0 (connecter et déconnecter).
  2. For Third Party repairs only: Perform the Toolbox Owner Authorization Request.
    Informational PurposesAn informational icon, calling your attention
    Remarque
    If the repair was booked through Tesla Service, the customer has already given authorization. Go to the next step.
    1. Log in to https://toolbox.tesla.com/help/owner_authorization.
    2. On the left panel, click Owner Authorization Request, and then click Request Owner Authorization in the main panel.
    3. Complete and submit the form.
    4. Ask the vehicle owner to approve the authorization request that was sent to their email.
  3. Click on Dashboards > Car Computer Replacement and on the "Getting Started" page, click on Next Step.
  4. 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
    Remarque
    The car computer will reboot several times during this step.
  5. Once the "Replace" page appears, the car computer can be replaced. Use the instructions in the appropriate "Remove and Install" procedure to replace the car computer:
    Select the appropriate Car Computer (Remove and Install) procedure:
  6. Perform the following tasks that are described in the (Remove and Install) procedure:
    1. Remove the current car computer.
    2. Install the replacement car computer to the vehicle and connect all harnesses and hoses to the computer.
    3. For Model S with HW3 car computer: determine whether an to Ethernet Diagnostics Retrofit is required:
      • If the car computer part number is 1637790-00-F or newer - An Ethernet Diagnostics Retrofit is not required. Go to the next step.
      • If the car computer part number is 1637790-00-F - An Ethernet Diagnostics Retrofit is required. Go to Ethernet Diagnostics Retrofit (HW3 Model S only).
    4. Prepare the vehicle for a Coolant Air Purge.
    5. Reconnect LV power. See Alimentation 12 BT (déconnecter et connecter).
    6. Connect an LV maintainer to the vehicle, but do not disconnect the LV battery. See Mainteneur BT (connecter et déconnecter).
      Informational PurposesAn informational icon, calling your attention
      Remarque
      Durant le redéploiement/la mise à jour logicielle sans fil, après avoir remplacé une pièce qui empêche la fermeture des contacteurs HT, il est permis de brancher le mainteneur BT et la batterie BT. Pour obtenir des instructions supplémentaires, consultez l’article 5795500 de Toolbox.
    7. Unlock the vehicle gateway.

  7. Re-establish the Toolbox laptop connection, and in the "Replace" page, click Next Step.
  8. Pour les réparations tierces seulement : Entrez les identifiants de connexion du professionnel de sécurité du véhicule requis pour accéder à la section « Associer un ordinateur de bord ».
    Informational PurposesAn informational icon, calling your attention
    Remarque
    Les pièces considérées comme liées à la sécurité et/ou au vol, ou qui peuvent nécessiter une programmation et/ou une configuration spéciale, ne peuvent être configurées que par des professionnels inscrits auprès d'un organisme d'accréditation de sécurité des véhicules ou par des techniciens de service Tesla.
  9. Follow the prompts to transfer configurations and associate the replacement car computer. The car computer will reboot several times.
  10. When association is complete and the VIN is confirmed online, click Next Step to go to the "Update" page.
    Informational PurposesAn informational icon, calling your attention
    Remarque
    If necessary, Reconnect the Toolbox connection.
  11. Click Start Part Replacement OTA to deploy a software update to the vehicle.
    Informational PurposesAn informational icon, calling your attention
    Remarque
    If necessary, Reconnect the Toolbox connection.
  12. Re-install software via UI
    Informational PurposesAn informational icon, calling your attention
    Remarque
    Via Controls > Service Mode > Software Reinstall
  13. In Toolbox, click Next Page to go to the "Restore" page, and then follow the prompts to restore the vehicle profile.
  14. Disconnect the laptop from the vehicle.
  15. Install the remaining components that were removed for access.
    Select the appropriate Car Computer (Remove and Install) procedure:
  16. Assurez-vous de mettre au rebut adéquatement le vieil ordinateur de bord. Suivez les instructions dans Ordinateur de bord (élimination) et ajoutez le code de correction 21151007 en tant qu'activité distincte à la visite d'entretien.

Ethernet Diagnostics Retrofit (HW3 Model S only)

Parts required for this procedure:
  • 1783315-00-A MCU,RJ45,JUMPER
  • 1681904-00-A ETHERNET DIAGNOSTIC - RJ45 MODULE
If the vehicle requires an Ethernet diagnostics retrofit, perform the following steps when connecting the electrical harnesses to the replacement car computer. See Service Manual procedure Ordinateur de bord (HW3) (retrait et installation).
  1. Connect all electrical harnesses to the car computer as instructed in the Service Manual, except for X455 and the gaming MCU connector.
    Figure 1. Connector X455 at RH side of car computer
    Figure 2. Gaming MCU connector at LH side of car computer
  2. Connect the X455 electrical harness to the Ethernet diagnostics jumper box, and then engage the connector lock.
    Figure 3. Ethernet diagnostics jumper harness connections
  3. Install the clip that attaches the Ethernet diagnostics jumper box to the RH body harness bracket.
  4. Connect the Ethernet diagnostics car computer connector (Figure 3, orange) to car computer connection X455, and then engage the locking tab.
  5. Route the diagnostic connector (Figure 3, green) behind the upper car computer mounting bracket.
  6. Insert a flexible pickup tool down the inner RH side of the center console, and pull the diagnostic connector up to the service panel.
  7. If not already present, install the Ethernet diagnostic RJ45 module on the service panel.
  8. Connect the diagnostic connector to the Ethernet diagnostic RJ45 module, and then engage the locking tab (Figure 29).
  9. Use electrical tape to attach the Ethernet diagnostics jumper harness to the IP harness.
  10. Connect the electrical harness to the car computer gaming MCU connector.
    Informational PurposesAn informational icon, calling your attention
    Remarque
    Make sure the locking tab engages the connector port and locks the connector in place.
  11. Go to step 6.d of the “Replace Car Computer” section and complete the remainder of the procedure.