Smart Key System (for Entry Function)
THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): SYSTEM DIAGRAM
THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): SYSTEM DESCRIPTION
CAUTION:
If using a pacemaker, be sure to read the manual of the pacemaker before using the key, as the radio waves of the key may affect the pacemaker.
1. SMART KEY SYSTEM DESCRIPTION
(a) In addition to conventional mechanical key and wireless door lock control functions, the smart key system enables door locking/unlocking, steering lock releasing, engine control system starting and back door opening without operating the key. The only requirement is that the key is in the possession of the user.
* This system is controlled by the certification ECU. When the certification ECU detects the presence of the key in one of the detection areas, it identifies and checks the ID code, and outputs operation signals to the related ECU in accordance with their functions.
* The detection areas are formed by 6 antennas.
2. DETECTION AREA
(a) Precautions for the entire system:
* Be sure to carry the key during inspection of the smart key system.
* As weak radio waves are used to detect the key, the key detection area may decrease, or the key may not be detected correctly in the following situations.
* The key battery is depleted.
* Any facilities that generate strong radio waves, such as a TV tower, power plant, broadcast station or gas station, are located near the inspection site.
* A wireless device, such as a cell phone, is carried with the key.
* The key is in contact with or covered by metal.
* Electric wave type keyless entry systems are being operated nearby.
* The key is located near a device that generates high voltage or noise.
* Film with some metallic content is applied to the back glass.
HINT
In this case, remove the film or unlock the door using the mechanical key.
* Even if the key is in the vehicle exterior key detection area, the key may not operate properly due to the vehicle body design.
* The key may not be detected correctly if it is around the vehicle windows, door handles or bumpers, even when it is in the detection area outside the vehicle.
* The key may not be detected correctly if it is on the instrument panel or floor, or in the glove box, even when it is in the detection area inside the vehicle.
* The key may not operate if the key is not held properly.
* The smart key system does not operate under the following conditions:
* The smart key system is canceled.
* The key battery is completely depleted (the indicator does not blink when pushing any of the switches on the key).
3. FUNCTION OF MAIN COMPONENTS
4. CONSTRUCTION AND OPERATION
(a) Key:
A total of 7 keys can be registered.
(1) Electrical key transmitter:
The electrical key transmitter consists of a mechanical key, a transmitter function for the wireless door lock control and a transceiver for the smart key system.
* The transceiver function for the smart key system receives the signals from the antennas and sends the ID code to the door control receiver.
* The transmitter function for the wireless door lock control has a lock switch, unlock switch and panic switch.
* The mechanical key can lock/unlock all the doors. To lock or unlock the doors, insert the key into the door key cylinder, and then turn it to the lock or unlock position.
(b) Antenna (front door, front floor, rear floor, inside luggage and outside luggage):
Each antenna transmits the request signal received from the certification ECU, and forms a key detection area to detect the presence of a key. The detection area formed by the front door antenna and outside luggage antenna is approximately 0.7 to 1.0 m (2.30 to 3.28 ft.) from the outside handle of the front door and rear bumper.
* The detection area of the front door antenna is formed by transmitting a request signal every 0.25 seconds while the engine switch is off and all the doors are locked. In this way, it detects the proximity of a key. During entry lock, the detection area is formed with the lock sensor on.
* The detection area of the outside luggage antenna is formed when the unlock switch is on.
* The detection area of the indoor antennas (front floor, rear floor and inside luggage) is formed when the driver door is open or closed, during starting, when a warning is activated, or when the lock sensor is on.
5. ENTRY FUNCTION OPERATION
(a) The smart key system has the following functions.
6. ENTRY UNLOCK FUNCTION
(a) The detection area is formed by communication between an electrical key antenna and the certification ECU when the door is locked in order to detect the person carrying the key.
(b) When the person carrying the key enters the detection area around the vehicle, the matching of the ID codes for an electrical key antenna and key is automatically performed. After the matching is completed, the door enters unlock standby mode.
(c) In unlock standby mode, the electrical key antenna built into the outside handle starts operating. If the outside handle is held (the back side of the handle is touched), the door unlock operation is performed. At this time, the hazard warning lights blink twice.
(d) If any of the doors are not opened after a door unlock operation, all the doors automatically lock after 30 seconds.
7. ENTRY LOCK FUNCTION
(a) After leaving the vehicle while carrying the key, touch the lock sensor on the outside handle or push the unlock switch on the back door control switch when all the doors are closed.
(b) The certification ECU determines whether the key is located inside or outside of the cabin based on the information from an electrical key antenna and indoor electrical key antenna. Then matching of the ID codes is performed.
(c) When the matching result shows that the key is not detected inside the vehicle and the ID codes of the key and electrical key antenna match, the door lock function operates. At this time, the hazard warning lights blink once.
(d) If the key is located inside of the cabin, the door lock function does not operate and the alarm buzzer (beep sound) sounds for 2 seconds.
8. ENTRY BACK DOOR UNLOCK FUNCTION
Stand in front of the back door with the key and push the unlock switch on the back door control switch or back door opener switch to start the matching of the ID codes for the electrical key antenna. If the ID codes match, the back door unlock operation is performed.
9. BACK DOOR POWER WINDOW FUNCTION
(a) Pressing the unlock switch on the back door control switch for approximately 1 second or more operates the back door window open operation.
(b) Pressing the lock switch on the back door control switch for approximately 1 second or more operates the back door window close operation.
(c) If the back door power window function is operating and the unlock switch or lock switch is released, the back door power window operation stops.
(d) The wireless buzzer sounds while the back door power window function is operating.
HINT
For more information about the back door power window function, refer to the power window control system Description and Operation.
10. PREVENTION OF KEY LOCK-IN FUNCTION
(a) If the key is in the cabin, the doors are closed and the entry lock operation is attempted (the lock sensor on the door outside handle is touched), the system determines that the key is located in the cabin and unlocks the doors.
(b) If the back door is closed and the lock switch is pressed with the key in the vehicle and the other doors locked, the alarm sounds and the back door does not lock.
11. ENTRY ILLUMINATION FUNCTION
In order to improve ease of entering and exiting the vehicle at night, the vehicle lights illuminate when the key is brought near the vehicle.
12. WARNING FUNCTION
(a) General:
When any of the situations below occur, the smart key system responds to alert the driver.
(b) Situation A:
Shift lever not in P (power source cut reminder) vehicle exit warning
(1) With the shift lever not in P, the driver door is opened and vehicle exit (while holding key) is attempted.
(2) With the shift lever not in P, the driver door is opened, the key is brought out of vehicle, the driver door is closed and movement away from the vehicle is attempted.
(c) Situation B:
Key reminder warning
(1) The steering lock is unlocked, the driver door is opened and movement away from the vehicle is attempted.
(d) Situation C:
Shift lever in P (power source cut reminder) vehicle exit warning
(1) With the shift lever in P, the driver door is opened, the key is brought out of the vehicle, the driver door is closed and movement away from the vehicle is attempted.
(2) With the shift lever in P and the engine switch on (ACC) or on (IG), the driver door is opened, the user moves away from the vehicle and the door handle lock sensor is touched in an attempt to perform the entry lock operation.
(e) Situation D:
Entry door ajar warning
(1) With one vehicle door open, the entry lock operation is attempted.
(f) Situation E:
Passenger has brought key out of vehicle warning
(1) With the engine switch in a condition other than off, the key is brought out of the vehicle by the passenger.
(g) Situation F:
Key is not within detection area warning
(1) With the key not in the vehicle cabin or the key battery depleted, an attempt is made to turn the engine switch on (ACC) or on (IG).
(h) Situation G:
Key lock-in prevention function buzzer (for cabin)
(1) With the key in the vehicle cabin, the vehicle is exited and the door handle lock switch is touched in an attempt to perform the entry lock operation.
(i) Situation H:
Key battery low warning
(1) A key with an almost depleted battery is used to drive the vehicle.
13. BATTERY SAVING
(a) Vehicle battery saving function:
While the smart key system is operating, signals are emitted outside of the vehicle at a set interval (0.25 seconds) when the doors are locked. Therefore, the vehicle battery may be drained if the vehicle remains parked for a long time. For this reason, the controls listed below exist.
(b) Reinstatement Conditions:
* A wireless door lock control signal (lock, unlock) is input and the ID matches.
* A user carries the key and touches the lock sensor on a door outside handle assembly.
* The driver door is locked or unlocked by the mechanical key.
(c) Key battery and vehicle battery saving function:
While the smart key system is operating, if the key is constantly located within the vehicle exterior detection area of the doors, the system maintains periodic communication with the key. Therefore, if the vehicle remains parked in that state for a long time, the key battery and the vehicle battery may be drained. For this reason, if this state continues for more than 10 minutes, the smart key system is automatically deactivated.
Reinstatement Conditions:
* A wireless door lock control signal (lock, unlock) is input and the ID code matches.
* A user carries the key and touches the lock sensor on a door outside handle assembly.
* The driver door is locked or unlocked by the mechanical key.
14. KEY DIAGNOSTIC MODE (Using the Techstream)
HINT
Key diagnostic mode checks if the electrical key transmitter within a selected antenna detection area is operating normally. The results are output through the wireless door lock buzzer (in the front fender).
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Utility / Key Communication Check.
(e) Check the values by referring to the table below.
(f) When the electrical key transmitter is brought near the selected antenna, check that the wireless door lock buzzer sounds.
(1) *1: Electrical key antenna (for driver side)
HINT
* Hold the key at the same height as the door outside handle (0.7 to 1.0 m [2.30 to 3.28 ft.]). Pay attention to the direction of the key in the illustration.
* *2: Perform the same inspection above for the other electrical key antenna (for front passenger side).
(2) *3: Indoor No. 1 electrical key antenna (front floor)
HINT
Place the electrical key transmitter on the driver or front passenger seat cushion.
(3) *4: Indoor No. 2 electrical key antenna (rear floor)
HINT
Pay attention to the direction of the key in the illustration.
(4) *5: Indoor No. 2 electrical key antenna (inside luggage)
HINT
Pay attention to the direction of the key in the illustration.
(5) *6: Electrical key antenna (outside luggage)
HINT
Hold the electrical key transmitter at the same height as the rear bumper upper surface. Pay attention to the direction of the key in the illustration.