LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2010 >> LS 460L AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (Keyless Entry) (Diagnostics & Symptom Tests) >> Smart Access System With Push-Button Start >> All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate: Procedure

  1. READ VALUE USING TECHSTREAM 
    1. Using the Techstream, read the Data List.
      SMART ACCESS (CERTIFICATION ECU)

      Tester Display Measurement Item/Display Normal Condition
      Auto Entry Cancel SW Entry function cancel / ON or OFF Mode status is displayed
      RESULT

      Result Proceed to
      Entry function is OFF A
      Entry function is ON B

    B → See step   6 

    A: Go to next step 

  2. CHECK WAVE ENVIRONMENT 
    1. Move the electrical key transmitter as described below and perform the operation inspection.

      HINT: 

      • When the electrical key transmitter is brought near the door outside handle or electrical key antenna, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      • The transmitting wave of the wireless function and entry function are the same, but the wave logic is different. As a result, it is possible that only the wireless function or only the entry function is affected by wave interference.
    2. Bring the electrical key transmitter near the driver door outside handle, and perform a driver door entry lock and unlock operation check.
      Fig 1: Identifying Distance Between Key And Door Handle 0.3 m (0.9 ft.)
      GTY254305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the door handle, communication is not possible.

    3. Bring the electrical key transmitter near the front passenger door outside handle, and perform a front passenger door entry lock and unlock operation check.
      Fig 2: Identifying Distance Between Key And Door Handle 0.3 m (0.9 ft.)
      GTY267179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the door handle, communication is not possible.

    4. Bring the electrical key transmitter near the rear left door outside handle, and perform a rear left door entry lock and unlock operation check.
      Fig 3: Identifying Distance Between Key And Door Handle 0.3 m (0.9 ft.)
      GTY288837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the door handle, communication is not possible.

    5. Bring the electrical key transmitter near the rear right door outside handle, and perform a rear right door entry lock and unlock operation check.
      Fig 4: Identifying Distance Between Key And Door Handle 0.3 m (0.9 ft.)
      GTY288838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the door handle, communication is not possible.

    6. Bring the electrical key transmitter near the indoor electrical key oscillator (in center console), and perform an engine start check.
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the center console, communication is not possible.

    7. Bring the electrical key transmitter near the indoor electrical key oscillator (in rear seat cushion), and perform an engine start check.
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the rear seat cushion, communication is not possible.

    8. Bring the electrical key transmitter near the electrical key antenna (in rear bumper), and perform an entry luggage compartment open function check.
      Fig 5: Identifying Distance Between Key And Rear Bumper 0.3m (0.9 ft.)
      GTY254939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the key is brought within 0.2 m (0.6 ft.) of the rear bumper, communication is not possible.

      HINT: 

      If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      RESULT

      Result Proceed to
      All operation checks fail A
      Some operation checks are normal B

    B → AFFECTED BY WAVE INTERFERENCE 

    A: Go to next step 

  3. KEY DIAGNOSTIC MODE 
    1. Diagnostic mode inspection (driver door outside oscillator)
      Fig 6: Identifying Distance Between Key And Door Handle 0.7 To 1.0 m (2.3 To 3.3 ft.)
      GTY288780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Driver Side.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    2. Diagnostic mode inspection (front passenger door outside oscillator)
      Fig 7: Identifying Distance Between Key And Door Handle 0.7 To 1.0 m (2.3 To 3.3 ft.)
      GTY288840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Passenger Side.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    3. Diagnostic mode inspection (rear door LH outside oscillator)
      Fig 8: Identifying Distance Between Key And Door Handle 0.7 To 1.0 m (2.3 To 3.3 ft.)
      GTY288839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Driver Side Rear.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    4. Diagnostic mode inspection (rear door RH outside oscillator)
      Fig 9: Identifying Distance Between Key And Door Handle 0.7 To 1.0 m (2.3 To 3.3 ft.)
      GTY283767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Passenger Side Rear.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    5. Diagnostic mode inspection (front inside oscillator)
      Fig 10: Inspecting Entry Ignition Operation's Detection Area (Front Seat)
      GTY261177Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Front Room.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    6. Diagnostic mode inspection (rear inside oscillator)
      Fig 11: Inspecting Entry Ignition Operation's Detection Area (Rear Seat) & Inspection Point
      GTY288836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Rear Room.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    7. Diagnostic mode inspection (luggage compartment antenna)
      Fig 12: Identifying Distance Between Key And Rear Bumper
      GTY270774Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check /Overhead + Luggage.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        RESULT

        Result Proceed to
        All diagnostic mode inspections fail A
        Some diagnostic mode inspections fail (door) B
        Some diagnostic mode inspections fail (interior) C
        Some diagnostic mode inspections fail (luggage compartment) D
        All diagnostic mode inspections are normal E

    E → REPLACE CERTIFICATION ECU 

    D → See step   9 

    C → See step   8 

    B → See step   7 

    A: Go to next step 

  4. REPLACE ELECTRICAL KEY TRANSMITTER 
    1. Replace the electrical key transmitter with a new one and perform the registration procedure. Refer toREGISTRATION .

    NEXT: Go to next step 

  5. CHECK OPERATION 
    1. Check the operation of the entry lock function.

      OK

      Operates normally

    NG → REPLACE CERTIFICATION ECU 

    OK → END 

  6. PERFORM CANCELLATION OF ENTRY KEY CANCEL FUNCTION. Refer to CUSTOMIZE PARAMETERS  
  7. GO TO DTC OF OTHER COMPONENTS (PROCEED TO PROBLEM SYMPTOM FLOWCHART FOR EACH DOOR). Refer to PROBLEM SYMPTOMS TABLE  
  8. GO TO OTHER FLOWCHART. Refer to Room Oscillator does not Recognize Key  
  9. GO TO OTHER FLOWCHART. Refer to Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment  
scientia non olet · About LEMON Manuals