All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate [12/2024 - ]: Procedure

2025 Toyota 4Runner SR5, RWDSECTION Procedure
  1. CHECK CUSTOMIZE SETTING USING GTS 
    1. Select the setting by referring to the table below.

      Smart Key / Access 

      Tester Display Description Default Setting ECU
      Auto Entry Cancel Setting Function that enables or disables the smart key system. OFF $00:OFF,$01:ON Certification ECU (Smart key ECU assembly)
      Auto Entry Cancel 2 Setting Function that only prevents unlocking of the doors. OFF $00:OFF,$04:ON Certification ECU (Smart key ECU assembly)

      Result

      Result Proceed to
      Smart key system has not been canceled A
      Smart key system has been canceled B

    Result: 

    PERFORM CUSTOMIZE FUNCTION 

    Refer to CUSTOMIZE PARAMETERS [12/2024 - ]

    Result: 

    See step  2

  2. CHECK SMART KEY SYSTEM (for Entry Function) 
    1. Check the smart key system (for entry function).

      Refer to "SMART KEY SYSTEM (for Entry Function)".

      OK

      Smart key system (for Entry Function) operates properly

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    Refer to "SMART KEY SYSTEM (for Entry Function)" 

    Result: 

    OK 

    See step  3

  3. CHECK ENTRY FUNCTION AND WIRELESS FUNCTION (DRIVER DOOR / FRONT PASSENGER DOOR / BACK DOOR) 
    1. Check whether it is possible to use the digital key to perform door lock/unlock with the entry function.
      1. Check the entry unlock function (driver door, front passenger door).
        1. Turn the ignition switch off.
        2. Open and close the driver door.
        3. From outside the vehicle, press the lock switch displayed on the digital key and lock all doors.
        4. Hold the key in your hand and hold your hand inside the digital key detection range. Then grip the sensor on the reverse side of the door outside handle for 2 seconds or longer.*
          GTY1008881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          *a Unlock Sensor (Backside)

          The illustrations shown are examples only.

          1. *: Perform this step 3 seconds or more after performing step (3).
            NOTE:
            • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.

              Refer to PRECAUTION [12/2024 - ]

            • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

              Refer to PRECAUTION [12/2024 - ]

            HINT: 

            • When checking the operation of the unlock sensor again, make sure to perform the procedure from step (1).
            • Inspect the front passenger door using the same procedure.
      2. Check the entry lock function (driver door, front passenger door).
        1. Turn the ignition switch off.
        2. Open and close the driver door.
        3. Hold the key in your hand and hold your hand inside the digital key detection range. Then touch the lock sensor on the surface of the door outside handle (indentation on the door outside handle) with multiple fingers for 2 seconds or longer.
          GTY1010209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          *a Lock Sensor

          The illustrations shown are examples only.

          NOTE:
          • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.

            Refer to PRECAUTION [12/2024 - ]

          • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

            Refer to PRECAUTION [12/2024 - ]

          HINT: 

          • If the door does not lock even when touching the lock sensor for 2 seconds or more, touch it with your palm.
          • When checking the operation of the lock sensor again, make sure to perform the procedure from step (1).
          • When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.
          • Inspect the front passenger door using the same procedure.
      3. Check the entry back door open function.
        1. With the back door closed and locked, hold the digital key in your hand and hold your hand inside the digital key detection range. Then operate the open switch.
          NOTE:
          • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.

            Refer to PRECAUTION [12/2024 - ]

          • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

            Refer to PRECAUTION [12/2024 - ]

        GTY1275029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a License Plate Light Assembly with Back Door Opener Switch (Open Switch)

        The illustrations shown are examples only.

      4. Check the entry back door unlock function.
        GTY1273859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Back Door Control Switch (Unlock Switch)

        The illustrations shown are examples only.

        1. With the back door closed and locked, hold the digital key in your hand and hold your hand inside the digital key detection range. Then operate the unlock switch.
        NOTE:
        • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.

          Refer to PRECAUTION [12/2024 - ]

        • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

          Refer to PRECAUTION [12/2024 - ]

      5. Check the entry back door lock function.
        GTY1273861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Back Door Control Switch (Lock Switch)

        The illustrations shown are examples only.

        1. With the back door closed and unlocked, hold the digital key in your hand and hold your hand inside the digital key detection range. Then operate the lock switch.
        NOTE:
        • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.

          Refer to PRECAUTION [12/2024 - ]

        • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

          Refer to PRECAUTION [12/2024 - ]

    2. Check the wireless function.

      Refer to OPERATION CHECK [12/2024 - ]

      Result

      Result Proceed to
      All door entry function and wireless function operate A
      All door entry function does not operate, but wireless function operates B
      All door entry function and wireless function do not operate C
      Entry function does not operate for one or more doors, but wireless function operates

    Result: 

    See step  5

    Result: 

    GO TO OTHER PROBLEM 

    Refer to PROBLEM SYMPTOMS TABLE [12/2024 - ]

    Result: 

    See step  4

  4. CAUSE ANALYSIS 
    1. Using the GTS, check for Vehicle Control History (RoB).

      Body Electrical > Smart Key > Utility 

      Tester Display
      Vehicle Control History (RoB)
    2. Perform cause analysis.

      Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2024 - ]

    3. Take appropriate action in accordance with the result of the cause analysis.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

  5. CHECK DIGITAL KEY DIAGNOSTIC MODE (DRIVER DOOR / FRONT PASSENGER DOOR / BACK DOOR) 
    NOTE:

    With only one digital key connected to BLE, perform inspection in digital key diagnostic mode.

    1. Check the BLE door digital key receiver (front door outside handle assembly (for driver door)) in digital key diagnostic mode.
      1. Using the GTS, select Body Electrical / Smart Key / Utility / Communication Check (Digital Key Diag Mode) / Digital key driver door outside area

        Body Electrical > Smart Key > Utility 

        Tester Display
        Communication Check (Digital Key Diag Mode)
      2. Hold the digital key in your hand, and hold your hand inside the digital key detection range. Check that the wireless buzzer sounds.
        NOTE:
        • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.
        • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.
    2. Check the BLE door digital key receiver (front door outside handle assembly (for front passenger door)) in digital key diagnostic mode.
      1. Using the GTS, select Body Electrical / Smart Key / Utility / Communication Check (Digital Key Diag Mode) / Digital key passenger door outside area

        Body Electrical > Smart Key > Utility 

        Tester Display
        Communication Check (Digital Key Diag Mode)
      2. Hold the digital key in your hand, and hold your hand inside the digital key detection range. Check that the wireless buzzer sounds.
        NOTE:
        • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.
        • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.
    3. Check the No. 2 BLE door digital key receiver assembly in digital key diagnostic mode.
      1. Using the GTS, select Body Electrical / Smart Key / Utility / Communication Check (Digital Key Diag Mode) / Digital key back door/trunk lid outside area

        Body Electrical > Smart Key > Utility 

        Tester Display
        Communication Check (Digital Key Diag Mode)
      2. Hold the digital key in your hand, and hold your hand inside the digital key detection range. Check that the wireless buzzer sounds.
        NOTE:
        • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.
        • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

          Refer to PRECAUTION [12/2024 - ]

      Result

      Result Proceed to
      The buzzer sounds in all operation ranges A
      The buzzer fails to sound in all operation ranges B
      The buzzer does not sound in a particular operation range C

    Result: 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    Refer to REMOVAL [12/2024 - ]

    Result: 

    GO TO OTHER PROBLEM 

    Refer to PROBLEM SYMPTOMS TABLE [12/2024 - ]

    Result: 

    See step  6

  6. CHECK ANOTHER DIGITAL KEY 
    1. Check if there is digital key available that is already registered to the vehicle.

      Result

      Result Proceed to
      Another registered digital key is not available A
      Another registered digital key is available B

    Result: 

    See step  9

    Result: 

    See step  7

  7. CHECK USING ANOTHER VEHICLE 
    1. Check if another vehicle equipped with digital key system is available

      Result

      Result Proceed to
      Vehicle equipped with digital key system not available A
      Vehicle equipped with digital key system available B

    Result: 

    See step  16

    Result: 

    See step  8

  8. REGISTER NEW SHARE KEY 
    1. Register a share key.

      HINT: 

      Refer to the digital key application.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  9. CHECK ENTRY FUNCTION (DRIVER DOOR / FRONT PASSENGER DOOR / BACK DOOR) 
    1. Using another registered digital key, check whether the entry function operates.
      NOTE:
      • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.
      • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

      OK

      Entry function operates

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (PERFORM TROUBLESHOOTING ON ORIGINAL DIGITAL KEY) 

    Result: 

    NG 

    See step  10

  10. CHECK DIGITAL KEY ECU ASSEMBLY (TERMINAL UART) 
    1. Using an oscilloscope, check the waveform.
      GTY1273523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Digital Key ECU Assembly)
      *b Waveform 1
      *c Wakeup signal from digital key ECU assembly *d Approximately 15 ms.
      *e 15 to 50 ms. *f Before door lock/unlock operation using digital key
      *g After door lock/unlock operation using digital key - -
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      OK

      Tester Connection Condition Tool Setting Specified Condition
      S31-23 (UART) - Body ground All of the following conditions are met:
      • Ignition switch off
      • Door lock/unlock operation has been not performed via digital key → performed
      2 V/DIV., 20 ms./DIV. Pulse generation
      (See waveform 1)

      Result

      Result Proceed to
      OK (Normal Waveform) A
      NG (No Wakeup Signal) B
      NG (Normal Waveform Not Output) C
      NG (Stuck Low) D

    Result: 

    REPLACE DIGITAL KEY ECU ASSEMBLY 

    Refer to REMOVAL [12/2024 - ]

    Result: 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    Refer to REMOVAL [12/2024 - ]

    Result: 

    See step  15

    Result: 

    See step  11

  11. REPLACE DIGITAL KEY ECU ASSEMBLY 
    1. Replace the digital key ECU assembly with a new one.

      Refer to REMOVAL [12/2024 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. REGISTER DIGITAL KEY CODE 
    1. Register the digital key code to the digital key ECU assembly.

      for HEV Model: Refer to REGISTRATION [12/2024 - ]

      for Gasoline Model: Refer to REGISTRATION [12/2024 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  13

  13. REGISTER NEW OWNER KEY 
    1. Register the owner key using the original digital key.

      HINT: 

      Refer to the digital key application.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  14. CHECK ENTRY FUNCTION (DRIVER DOOR / FRONT PASSENGER DOOR / BACK DOOR) 
    1. Using another registered digital key, check whether the entry function operates.
      NOTE:
      • For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.
      • Refer to Precautions for Inspection or Registration regarding the digital key and surrounding environment.

      OK

      Entry function operates

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (DIGITAL KEY ECU ASSEMBLY WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    Refer to REMOVAL [12/2024 - ]

  15. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Disconnect the S31 digital key ECU assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      S31-23 (UART) - Body ground Ignition switch off 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE DIGITAL KEY ECU ASSEMBLY 

    Refer to REMOVAL [12/2024 - ]

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    Refer to REMOVAL [12/2024 - ]

  16. REGISTER NEW SHARE KEY 
    1. Take a digital key where the entry function does not operate, and register it as a share key of another vehicle equipped with the digital key system.

      HINT: 

      Refer to the digital key application.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  17

  17. CHECK ENTRY FUNCTION (DRIVER DOOR / FRONT PASSENGER DOOR / BACK DOOR) 
    1. Using the other vehicle equipped with the digital key system, check whether the entry function operates.
      NOTE:

      For details on the digital key detection range, refer to Precautions for Outside Vehicle Digital Key Detection Range/Diagnostic Range.

      OK

      The entry function operates

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  10

    Result: 

    NG 

    END (PERFORM TROUBLESHOOTING ON ORIGINAL DIGITAL KEY) 

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
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