LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (For Entry) - Diagnostics - Introduction >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Operation Check [10/2023 - ] >> Operation Check [10/2023 - ]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Operation Check [10/2023 - ]

  1. CHECK CUSTOMIZE PARAMETERS 
    NOTE:

    The operation check below is based on the non-customized initial condition of the vehicle.

    Refer to CUSTOMIZE PARAMETERS [10/2023 - ] 

  2. CHECK THE ENTRY UNLOCK FUNCTION 
    1. Check the entry unlock function.
      1. Perform a wireless lock door operation to lock the door, touch the unlock sensor built into the backside of the front door outside handle assembly of the driver door while carrying the electrical key transmitter sub-assembly and check that the door unlocks.
      2. Inspect the entry unlock detection area. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle as shown in the illustration and check that the LED (red) of the electrical key transmitter sub-assembly blinks.
        Fig 1: Electrical Key Transmitter Sub-assembly
        GTY1009655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Electrical Key Transmitter Sub-assembly
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        The illustrations shown are examples only.

      3. With the system in unlock standby mode, grasp the front door outside handle assembly (for driver door) and check that the door unlocks.

        HINT: 

        • The system is in unlock standby mode when the electrical key transmitter sub-assembly is in the detection area and the key ID code sent by the electrical key transmitter sub-assembly matches the key ID code stored by the certification ECU (smart key ECU assembly).
        • Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the door outside handle assembly.
        • Inspect the front passenger door, rear door LH and rear door RH using the same procedure.
      4. Check the unlock response sensitivity. With the system in unlock standby mode, touch the area shown in the illustration and check that the door unlocks.
        NOTE:

        If the sensor is touched too quickly or released too slowly, the sensor may not react and the door will not unlock.

        HINT: 

        Inspect the front passenger door, rear door LH and rear door RH using the same procedure.

        Fig 2: Unlock Sensor (Backside)
        GTY1008881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Unlock Sensor (Backside)

        The illustrations shown are examples only.

  3. CHECK THE ENTRY LOCK FUNCTION 
      Fig 3: Door Lock Illustration
      GTY1010209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the electrical key transmitter sub-assembly is in the vehicle but outside the detection area (on the instrument panel, in the glove box, on the floor) and a door lock operation is performed, the key lock-in prevention function will not operate and the electrical key transmitter sub-assembly will be locked inside the vehicle.

    1. *a Lock Sensor

      The illustrations shown are examples only.

      Check the entry lock function.

      1. With the door closed and unlocked, touch the lock sensor of the front door outside handle assembly of the driver door while carrying the electrical key transmitter sub-assembly and check that the door locks.

        HINT: 

        • If the door does not lock even when touching the lock sensor, touch it with your palm.
        • Inspect the front passenger door, rear door LH and rear door RH using the same procedure.
      2. Inspect the entry lock operating range. Hold the electrical key transmitter sub-assembly approximately 0.1 m (0.328 ft.) below the bottom edge of the door glass and approximately 0.3 m (0.984 ft.) from the vehicle as shown in the illustration, touch the lock sensor and check that the door locks.

        HINT: 

        • If the door does not lock even when touching the lock sensor, touch it with your palm.
        • As communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the front door outside handle assembly, the door may not lock if the lock sensor is touched with the same hand that is carrying the electrical key transmitter sub-assembly, etc.
        • If the key lock-in prevention function buzzer sounds, radio waves from the indoor electrical key antenna may be leaking from the vehicle.
        • Inspect the front passenger door, rear door LH and rear door RH using the same procedure.
        • The entry lock function cannot be operated more than 3 times consecutively.
        Fig 4: Electrical Key Transmitter Sub-assembly
        GTY1009655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Electrical Key Transmitter Sub-assembly
        *a 0.3 m (0.984 ft.)

        The illustrations shown are examples only.

  4. CHECK ENTRY LUGGAGE DOOR OPEN FUNCTION 
    1. Check the entry luggage compartment open function (luggage electrical key switch).
      1. Perform a wireless lock operation to lock the doors, operate of the luggage electrical key switch while carrying the electrical key transmitter sub-assembly and check that the luggage compartment door opens.
        Fig 5: Check Entry Luggage Door Open Function
        GTY1009624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Electrical Key Transmitter Sub-assembly
        *2 Luggage Electrical Key Switch (Open Switch)
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        The illustrations shown are examples only.

      2. Inspect the entry luggage compartment open operating range. While standing at the rear of the vehicle, hold the electrical key transmitter sub-assembly so that it is facing the direction shown in the above illustration at the same height as the luggage electrical key switch and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle, press the luggage electrical key switch and check that the luggage compartment door opens.

        HINT: 

        Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 3 indoor electrical key antenna assembly (inside luggage compartment).

  5. CHECK PUSH-BUTTON START FUNCTION 

    Refer to OPERATION CHECK [10/2023 - ]

  6. CHECK KEY LOCK-IN PREVENTION FUNCTION (VEHICLE INTERIOR) 
    NOTE:

    In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

    1. Check the key lock-in prevention function (vehicle interior).
      1. Turn the ignition switch off.
      2. Place the electrical key transmitter sub-assembly on a front, rear seat or luggage room floor.
      3. Close all of the doors and make sure they are unlocked.
      4. Touch a door lock sensor and check that the doors do not lock and the key lock-in prevention function buzzer (external) sounds for approximately 5 seconds.
  7. CHECK KEY LOCK-IN PREVENTION FUNCTION (IN LUGGAGE COMPARTMENT) 
    NOTE:
    • In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.
    • If the electrical key transmitter sub-assembly is in any of the following locations, the key lock-in prevention function may not operate:
      • Near the spare tire or at the edge of the luggage compartment.
      • In a metal bag or near a metal object.
    1. Check the key lock-in prevention function (in luggage compartment).
      1. Place the electrical key transmitter sub-assembly in the luggage compartment with all doors locked. Check that: 1) closing the luggage compartment door triggers the buzzer (which lasts approximately 2 seconds), and 2) pressing the luggage electrical key switch opens the luggage compartment door.
      2. Inspect the key lock-in prevention detection area. Pay attention to the direction of the electrical key transmitter sub-assembly shown in the illustration. When the electrical key transmitter sub-assembly is in either of the 2 locations in the illustration, check that: 1) closing the luggage compartment door sounds the buzzer, and 2) pressing the luggage electrical key switch opens the luggage compartment door.
        Fig 6: Electrical Key Transmitter Sub-assembly Inspection Point
        GTY1010091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Electrical key transmitter sub-assembly Inspection Point

        The illustrations shown are examples only.

        HINT: 

        • Perform the inspection for both inspection points.
        • When all the doors are locked and the luggage compartment door is closed with the same hand that is carrying the electrical key transmitter sub-assembly, the key lock-in prevention function (in luggage compartment) may be operated and the luggage compartment door is not locked. Check the location of the electrical key transmitter sub-assembly before checking this function.
      3. Inspect the key lock-in prevention detection area and the door control receiver for wave leaks. Hold the electrical key transmitter sub-assembly at the same height as the lower edge of the luggage compartment door aligning it with the center of the rear of the vehicle. Pay attention to the direction and position of the electrical key transmitter sub-assembly shown in the illustration. When the electrical key transmitter sub-assembly is over 0.1 m (0.328 ft.) from the rear bumper and the luggage compartment door is closed, check that the buzzer does not sound.
        Fig 7: Electrical Key Transmitter Sub-assembly
        GTY1010364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Electrical key transmitter sub-assembly
        *a 0.1 m or more (0.328 ft. or more)

        The illustrations shown are examples only.

        HINT: 

        • If the buzzer sounds, the No. 3 indoor electrical key antenna assembly (inside luggage compartment) may have a wave leak.
        • When the electrical key transmitter sub-assembly is within 0.1 m (0.328 ft.) from the rear bumper, key lock-in prevention function (in luggage compartment) may operates.
  8. CHECK HANDS FREE POWER TRUNK LID OPERATION (w/ Hands Free Power Trunk Lid) 
    1. With the luggage door closed, while carrying the electrical key transmitter sub-assembly, kick your leg so that your foot is 0.1 m (0.328 ft.) or closer to the rear bumper surface. Pull your leg away from the sensor and check that the luggage door begins to open automatically.
    2. Inspect the entry luggage door open operating range. Hold the electrical key transmitter sub-assembly approximately 0.7 m (2.30 ft.) from the vehicle as shown in the illustration.
      GTY806905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Kick Door Control Sensor - -
      *a Approximately 0.7 m (2.30 ft.) *b Approximately 0.1 m (0.328 ft.)

      HINT: 

  9. CHECK ANSWER-BACK FUNCTION 
    1. Check the answer-back function (hazard warning light flashing and buzzer sounding*).
      Entry Operation Hazard Warning Light Wireless Buzzer
      Entry Lock Flashes once Sounds once
      Entry Unlock Flashes twice Sounds twice
  10. CHECK TRANSMITTER BATTERY SAVING MODE FUNCTION 

    Refer to OPERATION CHECK [10/2023 - ]

  11. CHECK ENTRY CANCEL FUNCTION 

    Refer to OPERATION CHECK [10/2023 - ]

  12. KEY DIAGNOSTIC MODE (Using GTS) 

    HINT: 

    • With key diagnostic mode, it is possible to check if the electrical key transmitter sub-assembly is operating properly with the selected electrical key antenna and within the selected detection area by the sounding of the wireless buzzer.
    • If the wireless buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.
    1. Enter the following menus: Body Electrical / Smart Access / Utility / Communication Check(Key Diag Mode).

      Body Electrical > Smart Access > Utility 

      Tester Display
      Communication Check(Key Diag Mode)
    2. Inspect the appropriate item according to the following table.
      Tester Display Inspection Item
      [CH1/CH2] Overhead + Driver Side*1 Front door outside handle assembly (electrical key antenna) (for driver door)
      [CH1] Overhead + Driver Side*1
      [CH2] Overhead + Driver Side*1
      [CH1/CH2] Overhead + Passenger Side*2 Front door outside handle assembly (electrical key antenna) (for front passenger door)
      [CH1] Overhead + Passenger Side*2
      [CH2] Overhead + Passenger Side*2
      [CH1/CH2] Overhead + Driver Side Rear*3 Rear door outside handle assembly (electrical key antenna) (for driver side)
      [CH1] Overhead +Driver Side Rear*3
      [CH2] Overhead + Driver Side Rear*3
      [CH1/CH2] Overhead + Passenger Side Rear*4 Rear door outside handle assembly (electrical key antenna) (for front passenger side)
      [CH1] Overhead + Passenger Side Rear*4
      [CH2] Overhead + Passenger Side Rear*4
      [CH1/CH2] Overhead + Front Room*5 No. 1 indoor electrical key antenna assembly (front floor)
      [CH1] Overhead + Front Room*5
      [CH2] Overhead + Front Room*5
      [CH1/CH2] Overhead +Rear Room*6 No. 2 indoor electrical key antenna assembly (rear floor)
      [CH1] Overhead +Rear Room*6
      [CH2] Overhead +Rear Room*6
      [CH1/CH2] Luggage (inside)+ Luggage (inside)*7 No. 3 indoor electrical key antenna assembly (inside luggage compartment)
      [CH1] Luggage (inside)+ Luggage (inside)*7
      [CH2] Luggage (inside)+ Luggage (inside)*7
      [CH1/CH2] Luggage+ Luggage (inside)*8 Electrical key antenna (outside luggage compartment)
      [CH1] Luggage+ Luggage (inside)*8
      [CH2] Luggage+ Luggage (inside)*8
      [CH1/CH2] Immobiliser Amp*9 Amplifier (engine switch)
      [CH1] Immobiliser Amp*9
      [CH2] Immobiliser Amp*9
      • [CH1]: Channel 1 is set.
      • [CH2]: Channel 2 is set.
      • [CH1/CH2]: Channel 1 and 2 switch automatically at a specific interval*.

        *: If the electrical key transmitter sub-assembly is detected with either channel 1 or 2, the wireless buzzer sounds.

    3. Bring the electrical key transmitter sub-assembly near the selected electrical key antenna and check that the wireless buzzer sounds.

      HINT: 

      The wireless buzzer sounds in short, repeated beeps for all items except "Overhead + Rear Room"*6. For "Overhead + Rear Room"*6, the wireless buzzer sounds in one long, continuous beep.

    4. *1: Front door outside handle assembly (for driver door)

      HINT: 

      • Hold the electrical key transmitter sub-assembly at the same height as the front door outside handle assembly in the position shown in the illustration.
      • *2, *3, *4: Perform the same inspection for the front passenger door, rear door LH and rear door RH.
      Fig 8: Electrical Key Transmitter Sub-assembly
      GTY1009655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Electrical Key Transmitter Sub-assembly
      *a 0.7 to 1 m (2.30 to 3.28 ft.)

      The illustrations shown are examples only.

    5. *5: No. 1 indoor electrical key antenna assembly (front floor)
      Fig 9: Electrical Key Transmitter Sub-Assembly Inspection Point (1 Of 3)
      GTY1010330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Electrical Key Transmitter Sub-assembly Inspection Point

      The illustrations shown are examples only.

      HINT: 

      Place the electrical key transmitter sub-assembly on the front seat cushion of the driver seat or front passenger seat.

    6. *6: No. 2 indoor electrical key antenna assembly (rear floor)

      HINT: 

      Place the electrical key transmitter sub-assembly on the rear seat cushion.

      Fig 10: Electrical Key Transmitter Sub-assembly Inspection Point
      GTY1009613Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Electrical Key Transmitter Sub-assembly Inspection Point

      The illustrations shown are examples only.

    7. *7: No. 3 indoor electrical key antenna assembly (inside luggage compartment)

      HINT: 

      Place the electrical key transmitter sub-assembly on the luggage room floor.

      Fig 11: Electrical Key Transmitter Sub-assembly Inspection Point
      GTY1010091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Electrical Key Transmitter Sub-assembly Inspection Point

      The illustrations shown are examples only.

    8. *8: Electrical key antenna (outside luggage compartment)

      HINT: 

      Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and align it with the center of the rear of the vehicle as shown in the illustration.

      Fig 12: Electrical Key Transmitter Sub-assembly
      GTY1010364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Electrical Key Transmitter Sub-assembly
      *a 0.7 to 1 m (2.30 to 3.28 ft.)

      The illustrations shown are examples only.

    9. *9: Amplifier (engine switch)
      GTY788026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Engine Switch
      *2 Electrical Key Transmitter Sub-assembly

      The illustrations shown are examples only.

      HINT: 

      While facing the logo side of the electrical key transmitter sub-assembly toward the engine switch, hold the transmitter near the engine switch.