DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Telematics System - Diagnostics - Introduction >> Telematics System >> Precaution [10/2022 - 11/2023] >> Precaution [10/2022 - 11/2023]

Precaution [10/2022 - 11/2023]

  1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the terminal is reconnected.

    System Name See Procedure
    Stop and Start System (for Gasoline Model) Refer to INITIALIZATION [10/2022 - 11/2023]
    Lane Control System
    Parking Support Brake System
    Pre-collision System
    Lighting System (EXT) (w/ AFS)
    Power Door Lock Control System
    Power Back Door System
  2. PRECAUTION FOR REPLACING PART 
    1. After replacing the radio and display receiver assembly or DCM (telematics transceiver), some functions and services may not be available after the ignition switch to ACC for first time or second time. Make sure to perform the following operations.
      1. Turn the ignition switch to ACC and wait for 60 seconds.
      2. Turn the ignition switch off.
      3. Turn the ignition switch to ACC and wait for 60 seconds.
  3. SERVICE MODE 
    NOTE:
    • Before servicing, enter service mode to restrain telematics communication functions and prevent the following while servicing:
      • Remote door lock and unlock operations
      • Remote power start and stop operations
      • Warning notification function.
    • Service mode can be entered by using the GTS or operating the radio and display receiver assembly.

    HINT: 

    When a warning is generated due to a vehicle malfunction, the DCM (Telematics Transceiver) receives warning information from the combination meter assembly and sends a warning notification to the service center.

    1. Service mode
      1. Enter service mode (Method 1)
        1. Turn the ignition switch off.
        2. Connect the GTS to the DLC3.
        3. Turn the ignition switch to ON.
        4. Turn the GTS on.
        5. Enter the following menus: Body Electrical / Telematics

        Body Electrical > Telematics > Trouble Codes 

      2. Enter service mode (Method 2)

        HINT: 

        Use the GTS to cancel communication function pausing mode (Service Mode).

        Refer to UTILITY [10/2022 - ] 

  4. PRECAUTION FOR TELEMATICS SYSTEM 
    1. If replacing any of the following parts, refer to Initialization.

      Refer to INITIALIZATION [10/2022 - 11/2023]

      NOTE:

      If registration is not performed after replacing any of the following parts, the remote door lock and unlock and remote engine start and stop will not be available.

      1. Certification ECU (smart key ECU assembly)
      2. DCM (telematics transceiver)
      3. Main body ECU (multiplex network body ECU)
      4. Radio and display receiver assembly
  5. PRECAUTION FOR ACTIVATION 
    1. When replacing the DCM (Telematics Transceiver), perform DCM activation.

      Refer to DCM ACTIVATION [12/2019 - ]

  6. PRECAUTION FOR TROUBLESHOOTING REMOTE SERVICE FUNCTION 
    1. When troubleshooting symptoms such as when part of the remote service function does not operate normally, first check that there are no third party parts connected to the DLC3. If any such parts are connected to the DLC3, some parts of the remote service function may not operate normally.

      Therefore, explain the situation to the customer, remove the parts and turn the ignition switch off and to ON before proceeding with troubleshooting.

Diesel-Data.com