PUSH-BUTTON START SYSTEM DESCRIPTION


  1. SYSTEM FUNCTION

    Function Outline
    Push-button start function When the key is brought into the vehicle and verified, this function changes the power source or starts the engine when the engine switch and brake pedal are operated.
    Battery saving function for key If a switch on the key is depressed and held, this function stops transmission of the signal after approximately 20 seconds to save key battery power.
    Key cancel function Cancels the push-button start when certain operations are performed.
    Immobiliser function Allows the engine to be started only using registered keys to prevent an unauthorized engine start.
    Automatic power off function With the shift lever in P and the engine switch on (ACC) or on (IG) (the engine is not started and the vehicle is not moving), the power automatically turns off when the vehicle is left as is for 60 minutes or more.

  2. DETECTION AREA

    Note


    • Depending on the vehicle body shape, the key may not operate in certain locations.

    • Even if the key is in the vehicle interior key detection area, the key may not be properly detected if the key is on the instrument panel, in the glove box or on the floor.

    • Depending on the way the key is held, the key may not operate properly.

    • The key detection area may reduce in size or the key may not be properly detected under the conditions below:


      • The key battery is depleted.

      • There are TV towers, electric power plants, broadcasting stations, gas stations or other facilities that produce strong electric waves nearby.

      • Wireless products such as cell phones, etc. are carried with the key.

      • The key is covered by or in contact with a metal object.

      • Electric wave-type keyless entry systems are being operated nearby.

      • The key is placed near high-voltage equipment or equipment that emits electrical noise.


    1. The detection area inside the vehicle is formed and the key is detected when any of the following conditions are met: 1) The driver door is opened and closed, 2) the brake pedal is depressed, 3) the engine switch is operated, 4) the conditions required for various warnings are met.

    2. The detection area inside the vehicle when starting the engine can be customized through the customize function.

  3. MULTI CHANNEL FUNCTION


    1. The electrical key transmitter sub-assembly and door control receiver can operate on two different RF channels. When an electrical key transmitter sub-assembly is brought within an exterior detection area, key verification begins. If key verification fails due to wave interference, the channel will be switched and key verification will be performed again.

      The multi channel system begins verification using the channel on which the last verification was successfully performed. When verification fails, the system switches to the other channel.

      A01EWEIE01
      Text in Illustration
      *a Exterior detection areas are created using LF waves (emitted from the vehicle at intervals of 0.25 seconds) to receive a response from the electrical key transmitter.
      *b When the electrical key transmitter is brought into an exterior detection area, it receives LF waves from the vehicle. Using RF waves, the electrical key transmitter responds to the vehicle.
      *c Upon receiving the response from the electrical key transmitter, the certification ECU (smart key ECU assembly) activates the electrical key antennas (outside) one by one. Using LF waves, the certification ECU (smart key ECU assembly) determines which exterior detection area the electrical key transmitter is in.
      *d The electrical key transmitter receives the LF waves from the vehicle and responds using RF waves. (The certification ECU (smart key ECU assembly) recognizes which exterior detection area the electrical key transmitter is in.)
      *e The certification ECU (smart key ECU assembly) sends registered key ID information to the electrical key transmitter using LF waves. (Up to 7 key IDs can be registered.)
      *f The electrical key transmitter sends the key ID information using RF waves. When the certification ECU (smart key ECU assembly) receives it, verification completes.
      *g Wave interference (Channel switching)

      The multi channel system changes the channels when the RF band (*b, *d and *f) is interrupted by wave interference.

      Refer to the table below to confirm when the system changes the channels.

      *b or *d is NG *f is NG
      Condition RF waves cannot be received RF waves cannot be received properly RF waves cannot be received RF waves cannot be received properly
      Channel switching The channels will not be switched. The channels will be switched. The channels will not be switched. The channels will be switched*.

      • *: The channels are not switched during vehicle interior verification after a push-button start operation is performed.

  4. WARNING FUNCTION


    1. Warning


      1. When any of the situations below occur, the push-button start causes the certification ECU (smart key ECU assembly) to sound the wireless door lock buzzer and a buzzer in the combination meter assembly a message to appear on the multi-information display in order to alert the driver.

      2. Situation: The engine is left running and the shift lever is in a position other than P when the driver gets out of the vehicle.


        • There are 2 patterns for this situation.


          • Pattern 1:

            When the engine is left running and the shift lever is in a position other than P, the driver opens the door and attempts to get out of the vehicle.

            In this situation, the following control is performed:

            Reason for warning Sudden vehicle start, vehicle theft, vehicle roll-away

            Warning Start Condition

            (All conditions are met)

            • The engine switch is on (ACC) or on (IG).

            • The shift lever is in a position other than P.

            • The driver door is opened.

            • The vehicle speed is 0 mph (0 km/h).
            Warning description

            • Buzzer in combination meter assembly sounds continuously.

            • "Shift to P position when parked" is displayed on multi-information display in combination meter assembly.

            Warning Stop Condition

            (One of conditions is met)

            • The engine switch is turned off.

            • The shift lever is in P.

            • The driver door is closed.

            • The vehicle speed is 5 km/h (3.11 mph) or more.

          • Pattern 2:

            Under the situation of pattern 1, the driver closes the door and attempts to leave the vehicle while holding the electrical key transmitter sub-assembly.

            In this situation, the following control is performed:

            Reason for warning Sudden vehicle start, vehicle theft, vehicle roll-away

            Warning Start Condition

            (All conditions are met)

            • The engine switch is on (ACC) or on (IG).

            • The shift lever is in a position other than P.

            • The driver door is opened → closed.

            • The electrical key transmitter sub-assembly is not in the vehicle.

            • The vehicle speed is 0 mph (0 km/h).
            Warning description

            • Buzzer in combination meter assembly sounds continuously.

            • Wireless buzzer sounds continuously.

            • "Shift to P position when parked" is displayed on multi-information display in combination meter assembly for 60 seconds.[A]

            • "Key not detected" is displayed on multi-information display in combination meter assembly.[B]

            Warning Stop Condition

            (One of conditions is met)

            • The engine switch is turned off ([A] continues to be displayed).

            • Electrical key transmitter sub-assembly is returned to the vehicle ([A] continues to be displayed).

            • The vehicle speed is 5 km/h (3.11 mph) or more. ([B] continues to be displayed).

            • The shift lever is in P ([B] continues to be displayed).

      3. Situation: The key reminder sounds.


        • When the driver door is open, the driver turns the engine switch on (ACC) and attempts to leave the vehicle.

          Reason for warning Vehicle theft

          Warning Start Condition

          (All conditions are met)

          Condition 1


          • The shift lever is in P.

          • The engine switch is on (ACC).

          • The driver door is opened.

          Condition 2 (Approval for one second or more)


          • The shift lever is in P.

          • The engine switch is off.

          • The steering wheel is unlocked.

          • The driver door is opened.
          Warning description

          • Buzzer in combination meter assembly sounds continuously at short and even intervals.

          Warning Stop Condition

          (One of conditions is met)

          The warning is stopped when one of the following conditions is met:


          • The engine switch is turned on (IG).

          • The driver door is closed.

          • The engine switch is turned off and the steering wheel is locked.

      4. Situation: The engine is left running with the shift lever in P when the driver gets out of the vehicle.


        • When the engine is left running with the shift lever in P, the driver closes the driver door and attempts to leave the vehicle while carrying the electrical key transmitter sub-assembly.

          In this situation, the following control is performed:

          Reason for warning Vehicle theft

          Warning Start Condition

          (All conditions are met)

          • The engine switch is on (ACC) or on (IG).

          • The shift lever is in P.

          • The driver door is opened → closed.

          • The electrical key transmitter sub-assembly is not in the vehicle.

          • The vehicle speed is 0 km/h (0 mph).
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • Wireless buzzer sounds 3 times.

          • "Key not detected" is displayed on multi-information display in combination meter assembly.

          Warning Stop Condition

          (Either condition is met)

          • The engine switch is turned off.

          • The electrical key transmitter sub-assembly is returned to the vehicle.

      5. Situation: The engine is left running when a passenger gets out of the vehicle while carrying the electrical key transmitter sub-assembly.


        • When the engine is left running, a passenger leaves the vehicle while carrying the electrical key transmitter sub-assembly.

          In this situation, the following control is performed:

          Reason for warning Engine cannot be restarted

          Warning Start Condition

          (All conditions are met)

          • The engine switch is on (ACC) or on (IG).

          • A door other than the driver door is opened → closed.

          • The electrical key transmitter sub-assembly is not in the vehicle.

          • The vehicle speed is 0 km/h (0 mph).
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • Wireless buzzer sounds 3 times.

          • "Key not detected" is displayed on multi-information display in combination meter assembly.

          Warning Stop Condition

          (Either condition is met)

          • The engine switch is turned off.

          • The electrical key transmitter sub-assembly is returned to the vehicle.

      6. Situation: The electrical key transmitter sub-assembly is not in the detection areas.


        • When the electrical key transmitter sub-assembly is not in the vehicle or the transmitter battery is depleted, the driver attempts to start the engine or turn the engine switch on (IG).

          In this situation, the following control is performed:

          Reason for warning Confuses the user

          Warning Start Condition

          (All conditions are met)

          • A door is not unlocked using the mechanical key and the engine switch is pressed.

          • The electrical key transmitter sub-assembly is not in the vehicle or the transmitter battery is depleted.

          • The engine immobiliser system is set.
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • "Key not detected" is displayed on multi-information display in combination meter assembly for 15 seconds.

          Warning Stop Condition

          (Either condition is met)

          • The electrical key transmitter sub-assembly is returned to the vehicle.

          • 30 seconds have elapsed after the door is opened

      7. Situation: The vehicle is driven without an electrical key transmitter sub-assembly.


        • When the vehicle starts moving without the registered electrical key transmitter sub-assembly in the vehicle.

          In this situation, the following control is performed:

          Reason for warning Engine cannot be restarted

          Warning Start Condition

          (All conditions are met)

          • The engine switch is on (IG).

          • Warning of due to electrical key transmitter sub-assembly being brought out of vehicle is output.

          • The vehicle speed is 5 km/h (3.11 mph) or more.

          • The electrical key transmitter sub-assembly is not in the vehicle.
          Warning description

          • Buzzer in combination meter assembly sounds nine times.

          • "Key not detected" is displayed on multi-information display in combination meter assembly.

          Warning Stop Condition

          (Either condition is met)

          • The engine switch is turned off.

          • The electrical key transmitter sub-assembly is returned to the vehicle.

      8. Situation: The electrical key transmitter sub-assembly is left in the luggage compartment door.


        • The luggage compartment door is closed with the electrical key transmitter sub-assembly left in the luggage compartment.

          In this situation, the following control is performed:

          Reason for warning Vehicle theft

          Warning Start Condition

          (All conditions are met)

          • The vehicle speed is 0 km/h (0 mph).

          • Entry luggage compartment open function is available.

          • All doors are closed and all doors are locked or the state where the doors are waiting to open after an unlock operation.

          • The luggage compartment door is opened → closed.

          • The electrical key transmitter sub-assembly is in the luggage compartment.
          Warning description

          • Wireless buzzer sounds continuously for 5 seconds.

          Warning Stop Condition

          (Either condition is met)

          • The vehicle speed is 5 km/h (3.11 mph) or more.

          • The luggage compartment door is opened.

      9. Situation: The electrical key transmitter sub-assembly is locked inside the vehicle.

        With a door open and the electrical key transmitter sub-assembly in the vehicle, the lock knob is locked and then the door is closed with the door handle being pulled.

        In this situation, the following control is performed:

        Reason for warning Vehicle theft

        Warning Start Condition

        (All conditions are met)

        • With a door open, the lock knob is locked and then the door is closed with the door handle being pulled.

        • The electrical key transmitter sub-assembly is in the vehicle.

        • The vehicle speed is 0 km/h (0 mph).
        Warning description

        • Buzzer in combination meter assembly sounds once.

        • Wireless buzzer sounds continuously for 5 seconds.

        • "Key detected in vehicle" is displayed on multi-information display in combination meter assembly for 60 seconds.

        Warning Stop Condition

        (One of conditions is met)

        • The engine switch is turned to a mode other than off.

        • Any door is opened (only wireless buzzer stops).

        • Lock operation is detected.

        • The vehicle speed is 5 km/h (3.11 mph) or more.

      10. Situation: The transmitter battery is weak.


        • The vehicle is driven using an electrical key transmitter sub-assembly that has a low transmitter battery.

          In this situation, the following control is performed:

          Reason for warning Usability function, engine cannot be restarted

          Warning Start Condition

          (All conditions are met)

          Condition 1


          • The engine switch is turned off after being left on (IG) for more than 20 minutes.

          • The transmitter battery voltage is low.

          • The electrical key transmitter sub-assembly is in the vehicle.

          • The vehicle speed is 0 mph (0 km/h).

          Condition 2


          • The engine is off → the engine is started.

          • The transmitter battery voltage is low.

          • The electrical key transmitter sub-assembly is in the vehicle.

          • The vehicle speed is 0 mph (0 km/h).

          • Condition 1 is met.(past)
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • "Key Battery Low" is displayed on multi-information display in combination meter assembly for 15 seconds.

          Warning Stop Condition

          (Either condition is met)

          • The vehicle speed is 5 km/h (3.11 mph) or more.

          • The transmitter battery is replaced with a new one.

      11. Situation: The steering wheel cannot be released.


        • The steering wheel cannot be released, thus the engine is prevented from starting.

          The shift lever is moved to a position other than P before the steering wheel is unlocked.

          In this situation, the following control is performed:

          Reason for warning Usability function
          Warning Start Condition

          • Steering wheel cannot be unlocked.
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • "Steering Lock active" is displayed on multi-information display in combination meter assembly for 15 seconds.
          Warning Stop Condition

          • Steering wheel is unlocked.

      12. Situation: The push-button start is malfunction.


        • An IG circuit malfunction, vehicle speed signal malfunction or malfunction that interferes with steering lock ECU (steering lock actuator assembly) operation, has been detected.

          In this situation, the following control is performed:

          Reason for warning Malfunction detection

          Warning Start Condition

          (One of conditions is met)

          • The steering lock ECU (steering lock actuator assembly), driver of the certification ECU (smart key ECU assembly) or unlock detection switch is malfunctioning.

          • An IG relay output circuit malfunction occurs three times or more consecutively.

          • The vehicle speed is judged as abnormal or vehicle speed signal communication is malfunctioning.
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • "Check Entry & Start System" is displayed on multi-information display in combination meter assembly for 15 seconds.
          Warning Stop Condition

          • The system returns to normal.

      13. Situation: The engine does not start. (Situation A)


        • When the engine switch is pressed, the electrical key transmitter sub-assembly cannot be detected in the vehicle two times in a row.

          In this situation, the following control is performed:

          Reason for warning Usability function

          Warning Start Condition

          (One of conditions is met)

          • The engine immobiliser system is set.

          • The electrical key transmitter sub-assembly is not in the vehicle.

          • Key code verification error occurs when the engine switch is pressed twice or the driver door key linked unlock operation is performed.
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • "Depress brake pedal, touch engine switch with key" is displayed on multi-information display in combination meter assembly for 60 seconds.

          Warning Stop Condition

          (Either condition is met)

          • The electrical key transmitter sub-assembly is in the vehicle.

          • 30 seconds have elapsed after the door is opened

      14. Situation: The engine does not start. (Situation B)


        • There are two patterns for this situation.


          • Pattern 1:

            A warning message appears on the multi-information display when the driver does not follow the proper procedure to start the vehicle.

            In this situation, the following control is performed:

            Reason for warning Usability function

            Warning Start Condition

            (All conditions are met)

            • The engine switch is off.

            • Driver door is closed → opened.

            • The engine switch is turned from off to on (ACC) more than twice with the engine off and the brake pedal not depressed.
            Warning description

            • Buzzer in combination meter assembly sounds once.

            • "Depress brake pedal and push engine switch to start" is displayed on multi-information display in combination meter assembly for 5 seconds.

            Warning Stop Condition

            (Either condition is met)

            • The engine switch is off.

            • The engine switch is turned on (IG).

          • Pattern 2:

            A message indicating how to start the engine appears on the multi-information display when the shift lever is in a position in which the engine cannot be started.

            In this situation, the following control is performed:

            Reason for warning Usability function

            Warning Start Condition

            (All conditions are met)

            • The engine is stopped.

            • The vehicle speed is 0 km/h (0 mph).

            • More than 0.5 seconds have elapsed after the engine switch is turned on (IG).

            • The shift lever is in a position any other than P.

            • The starter is not operating.
            Warning description

            • Buzzer in combination meter assembly sounds once.

            • "Shift to P position to start" is displayed on multi-information display in combination meter assembly.

            Warning Stop Condition

            (One of conditions is met)

            • The shift lever position is in a P.

            • The vehicle speed is 5 km/h (3.11 mph) or more.

            • The power source mode is changed to mode other than on (IG).

            • The engine is started.

      15. Situation: The engine switch cannot be turned off.


        • There are 2 patterns for this situation.


          • Pattern 1:

            A warning message appears on the multi-information display when the driver attempts to turn the engine switch off with the shift lever in any position other than P or N

            In this situation, the following control is performed:

            Reason for warning Discharged vehicle battery, vehicle roll-away
            Warning Start Condition

            The engine switch is turned off with both conditions below met.


            • Shift lever in any position other than P or N.

            • Even though the engine switch is pressed, the power source mode does not change to off (excluding emergency stop operation).
            Warning description

            • Buzzer in combination meter assembly sounds once.

            • "Shift to P position when parked" is displayed on multi-information display in combination meter assembly.
            Warning Stop Condition

            • The engine switch is turned to a mode other than ACC.

            • The shift lever is moved to P.

          • Pattern 2:

            Under the situation of pattern 1, the shift lever is moved to P.

            In this situation, the following control is performed:

            Reason for warning Discharged vehicle battery, vehicle roll-away
            Warning Start Condition

            • The shift lever is moved to P.
            Warning description

            • Buzzer in combination meter assembly sounds once.

            • "Turn Power OFF" is displayed on multi-information display in combination meter assembly.

            Warning Stop Condition

            (Either condition is met)

            • The power source mode is changed to mode other than on (ACC).

            • The shift lever in any position other than P.

      16. Situation: Auto power off operation occurs.


        • A warning message appears on the multi-information display when automatic power off operation occurs.

          In this situation, the following control is performed:

          Reason for warning Vehicle battery saving function

          Warning Start Condition

          (All conditions are met)

          • The shift lever is in P.

          • The engine switch is on (ACC) or on (IG).

          • The vehicle speed is 0 km/h (0 mph).

          • The engine is stopped.

          • The power source control system is turned off by automatic power off function.
          Warning description

          • "Auto Power OFF to Conserve Battery" is displayed on multi-information display in combination meter assembly for 10 seconds.
          Warning Stop Condition

          • The engine switch is on (ACC) or on (IG).

      17. Situation: Engine immobiliser system certification completion occurs.


        • When an electrical key transmitter sub-assembly with a depleted transmitter battery is held near to the engine switch while depressing the brake.

          In this situation, the following control is performed:

          Reason for warning Malfunction detection
          Warning Start Condition

          • Electrical key transmitter sub-assembly certification result is OK.
          Warning description

          • Buzzer in combination meter assembly sounds once.

          • "Depress brake pedal and push engine switch to start" is displayed on multi-information display in combination meter assembly for 10 seconds.

          Warning Stop Condition

          (One of conditions is met)

          • The electrical key transmitter sub-assembly is detected to the vehicle.

          • The engine is running at 500 rpm or more.

          • The engine is started.

          • The engine immobiliser system is set and room recognize is stopped or cannot be recognized.