System Description [08/2015 - 08/2019]

PRECAUTION FOR REGISTRATION
1. If replacing any of the following parts, refer to the registration procedures (Refer to REGISTRATION [08/2015 - 08/2019] ).
  1. ID code box
  2. Certification ECU
  3. Steering lock actuator assembly (steering lock ECU)
  4. ECM
  5. Electrical key transmitter (key)
  6. DCM (Telematics Transceiver)*
    1. *: for Lexus Enform Remote Compatible Type

SYSTEM FUNCTION

Function	Outline
Ignition 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 vehicle	When the vehicle is not used for a long time, this function extends the interval between each periodic transmission of the request signal, or stops transmission of the request signal to save vehicle battery power. When 5 days elapse without a response from the key, periodic transmission stops. When 14 days elapse without a response from the key, the lock/unlock sensor of all door outside handle assemblies except the driver side door is disabled. When the key is in the detection area outside the vehicle for 10 minutes or more, this functions stops the periodic transmission of the request signal (formation of the detection area) to save battery power.
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 smart access system with 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	When the shift lever is in P and the power source mode is on (ACC) (the engine has not been started and the vehicle is not moving), this function automatically turns off the power after approximately 20 minutes elapse. When the shift lever is in P and the power source mode is on (IG) (the engine has not been started and the vehicle is not moving), this function automatically turns off the power after approximately 60 minutes elapse.
Remote engine start and stop function*	Sends remote engine start and stop operation signals requested by the user using an electrical key transmitter sub-assembly or application to the certification ECU (smart key ECU assembly). Refer to SYSTEM DESCRIPTION [08/2015 - 08/2018] , or refer to SYSTEM DESCRIPTION [08/2018 - 08/2019]

*: w/ Lexus Enform Remote

REMOTE ENGINE START AND STOP FUNCTION (w/ Lexus Enform Remote)
1. Remote engine start and stop function (start operation)
  1. When using the electrical key transmitter sub-assembly:
    1. Point the electrical key transmitter sub-assembly at the vehicle and press and release the lock switch twice. Immediately press and hold the lock switch.
    HINT:
    
    The engine can be started start by the remote engine start and stop function when all of the following conditions are met:
    - All of the doors are closed.
    - The engine hood is closed.
    - The engine switch is off.
    - The electrical key transmitter sub-assembly is not in the vehicle.
    - The battery voltage is 11 V or higher.
    - The cumulative engine running time after being started by remote engine start and stop is less than 15 minutes.
    - All of the doors are locked.
    - The engine has not already been started by remote engine start and stop.
  2. When using the application:
    Refer to SYSTEM DESCRIPTION [08/2015 - 08/2018] , or refer to SYSTEM DESCRIPTION [08/2018 - 08/2019]
2. Remote engine start and stop function (stop operation)
  1. When using the electrical key transmitter sub-assembly, perform either of the following operations:
    1. Press the unlock switch.
    2. Press and hold the lock switch.
    HINT:
    
    The engine will stop when any of the following conditions is met:
    - Any door is opened.
    - The engine hood is opened.
    - The engine switch is pressed.
    - A stop request is received from the electrical key transmitter sub-assembly or Service Center.
    - The theft deterrent system enters the alarm sounding state.
    - The battery voltage drops to less than 11 V.
    - 10 minutes elapse after the engine is started.
    - The cumulative engine running time after being started by remote engine start and stop is 20 minutes or more.
    - The shift lever is moved to a position other than P.
    - The vehicle speed is 5 km/h or more.
    - The stop lights illuminate or their condition cannot be determined.
    - Any door is unlocked.
    - The engine speed is more than 3000 rpm for 0.2 seconds.
    - The engine speed is 0 rpm for 0.2 seconds.
    - The engine is malfunctioning.
    - The fuel level warning is displayed on the multi-information display in the combination meter assembly.
    - The CAN communication is malfunctioning.
  2. When using the application:
    Refer to SYSTEM DESCRIPTION [08/2015 - 08/2018] , or refer to SYSTEM DESCRIPTION [08/2018 - 08/2019]
3. Remote air conditioner system
  Refer to SYSTEM DESCRIPTION [08/2015 - ]
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 exterior key detection area, the key may not be properly detected if the key is near a window, a door handle or the center of the rear bumper.
- 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 request signal sent from the certification ECU is transmitted from each electrical key antenna (outside) to form the smart key detection area. The detection area formed by each electrical key antenna (outside) has a detection range of 0.7 to 1 m (2.30 to 3.28 ft.) from the door handles and rear bumper (electrical key antenna [outside luggage]).
2. When the vehicle is parked (the power is off and the doors are locked*), the detection area of each electrical key antenna (outside) is formed by emitting a periodic request signal every 0.25 seconds in order to detect the key. Also, when the doors are locked and a lock sensor is touched, a request signal is emitted, the detection area outside the vehicle is formed and the key is detected.
  HINT:
  
  *: The smart access system with push-button start controls each door individually. After a door is locked with the door lock switch or wireless remote control function, a detection area is formed at the locked door even if all the doors are not locked.
3. The detection area of the electrical key antenna (outside luggage) is formed when the back door opener switch is pressed.
4. The detection area inside the vehicle is formed and the key is detected when any of the following conditions are met: 1) The driver side 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, or 5) a smart door lock operation is performed.
5. The detection area inside the vehicle when starting the engine can be customized through the customize function.