Smart Key System (for Entry Function)
THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): SYSTEM DIAGRAM
Communication Table:
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.
SYSTEM DESCRIPTION
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 (smart key ECU assembly). When the certification ECU (smart key ECU assembly) 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 4 oscillators and 4 antenna (4 door oscillators, back door antenna and 3 indoor 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.
a. The key battery is depleted.
b. Any facilities that generate strong radio waves, such as a TV tower, power plant, a broadcast station or gas station, are located near the inspection site.
c. A wireless device, such as a cell phone, is carried with the key.
d. The key is in contact with or covered with metal.
e. Electric wave type keyless entry systems are being operated nearby.
f. The key is located near a device that generates high voltage or noise.
g. Film with some metallic content is stuck to the back glass.
HINT
In this case, remove the cause 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, the door handle or center of the bumper, 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, rear package tray 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 in the following conditions:
a. The smart key system is canceled.
b. 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
HINT
* *1: LF waves (134 kHz) check if the key is in the vehicle interior or not.
* *2: RF waves (314.35 MHz) are emitted from the key in response to the LF waves, and are sent to the door control receiver.
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 oscillators 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.
* This mechanical key can lock or unlock all the doors. To lock or unlock the doors, remove the cap from the driver door outside handle, insert the key into the door key cylinder, and then turn it to the lock or unlock position.
(b) Oscillator (each door oscillator, front, rear 1 and rear 2 indoor antenna, and back door antenna)
Each oscillator transmits the request signal received from the certification ECU (smart key ECU assembly), and forms a key detection area to detect the presence of a key. The detection area formed by each door oscillator and back door outer antenna is approximately 0.7 to 1.0 m (2.30 to 3.28 ft.) from the outside handle of each door or the center of the rear bumper.
* The detection area of each door oscillator is formed by transmitting a request signal every 0.25 seconds while the engine switch is off and each door is locked. In this way, it detects the proximity of a key. During entry lock, the detection area is formed with the lock switch on.
* The detection area of the back door antenna is formed when the back door opener switch is on.
* The detection area of the indoor antenna (for front, rear 1 and rear 2) is formed when the driver door is opened or closed, during starting, when a warning is activated, or when the lock switch is on.
5. ENTRY FUNCTION OPERATION
(a) The smart key system has the following functions.
HINT
*: w/ Remote Function
6. WIRELESS DOOR LOCK AND UNLOCK AND PANIC FUNCTION
Push the lock/unlock/panic switch on the key to operate each function.
7. ENTRY UNLOCK FUNCTION
(a) The detection area is formed by communication between a door oscillator and the certification ECU (smart key ECU assembly) 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 a door oscillator and key will automatically be performed. After the matching is completed, the door will enter unlock standby mode.
(c) In unlock standby mode, the antenna built into the outside handle starts sensing. If the outside handle is held (the back side of the handle is touched), the door unlock operation will be performed. At this time, the hazard warning light blinks twice and the wireless door lock buzzer sounds twice.
(d) If any of the doors are not opened after a door unlock operation, all doors will automatically lock after 60 seconds.
8. ENTRY LOCK FUNCTION
(a) After leaving the vehicle carrying the key, push the lock switch on the outside handle when all the doors are closed.
(b) The certification ECU (smart key ECU assembly) determines whether the key is located inside or outside of the cabin based on the information from a door oscillator and indoor antenna. Then matching of the ID codes is performed.
(c) When the matching result shows that the ID codes of the key and indoor antenna do not match and the ID codes of the key and door oscillator match, the door lock function will operate. At this time, the hazard warning lights blink once and the wireless door lock buzzer sounds once.
(d) If the key is located inside of the cabin, the door lock function will not operate and the alarm buzzer (beep sound) will sound for 2 seconds.
9. ENTRY BACK DOOR OPEN FUNCTION
Stand in front of the back door with the key and push the back door opener switch to start the matching of the ID codes for the back door antenna. If the ID codes match, the back door open operation will be performed.
10. PREVENTION OF KEY LOCK-IN FUNCTION
(a) If you attempt to lock the door through keyless operation (move the lock knob to the lock position and then close the door) with the key in the cabin, the system determines that the key is located in the cabin and unlocks the door.
(b) If the back door is closed with the key in it, the alarm will sound and the back door can be opened only when all the doors are locked in order to prevent key lock-in in the vehicle.
11. ENTRY ILLUMINATION FUNCTION
In order to improve ease of entering and exiting the vehicle at night, the room lights illuminate when the key is brought near the vehicle.
12. ENTRY POWER WINDOW FUNCTION* [REMOTE FUNCTION] (DOOR WINDOW AND SLIDING ROOF CLOSE OPERATION ONLY)
(a) Pressing the door handle lock switch for 3 seconds or more operates the door window close operation of all of the windows and the sliding roof close operation.
(b) If the entry power window function is operating and the door handle lock switch is released, the entry power window operation will stop.
HINT
* For more information about the entry power window function, refer to the Power Window Control System Operation Check.
* *: w/ Remote Function
13. MEMORY CALL FUNCTION (w/Seat Position Memory System)
(a) After unlocking the driver door using the key ID and opening the driver door, the seat automatically moves to the position associated with the key ID.
HINT
For more information about the memory call function, refer to the Front Power Seat Control System Operation Check.
14. 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 shift lever not in P, door is opened and vehicle exit (while holding key) is attempted
(2) With shift lever not in P, door is opened, key is brought out of vehicle, door is closed, and movement away from vehicle is attempted
(c) Situation B:
Key reminder warning
(1) Steering lock/unlock set, driver door is opened and movement away from vehicle is attempted
(d) Situation C:
Shift lever in P (power source cut reminder) vehicle exit warning
(1) With shift lever in P, driver door is opened, key is brought out of vehicle, driver door is closed, and movement away from vehicle is attempted
(2) With shift lever in P and either engine switch on (ACC) or steering lock/unlock set, driver door is opened, user moves away from vehicle, and door handle lock switch is pressed in an attempt to perform entry lock operation
(e) Situation D:
Entry door ajar warning
(1) With one vehicle door open, entry lock operation is attempted
(f) Situation E:
Passenger has brought key out of vehicle warning
(1) With engine switch in condition other than off, key is brought out of vehicle by passenger
(g) Situation F:
Key is not within detection area warning
(1) With key not in vehicle cabin or key battery depleted, engine switch on (ACC) or on (IG) operation is attempted
(h) Situation G:
Key lock-in prevention function buzzer (for cabin)
(1) With key in vehicle cabin, vehicle is exited and door handle lock switch is pressed in an attempt to perform entry lock operation
(i) Situation H:
Key battery low warning
(1) Key with almost depleted battery is used to drive vehicle
15. BATTERY SAVING
(a) Vehicle battery saving function:
In the smart key system, signals are emitted outside of the vehicle at a prescribed interval (0.25 seconds) when the doors are locked. Therefore, the vehicle battery could be drained if the vehicle remains parked for a long time. For this reason, the controls listed below exist.
Reinstatement Conditions:
* A wireless door lock control signal (lock, unlock) is input and the ID matches.
* A user carries the key and pushes a lock switch on an outside door handle.
* The driver door is locked or unlocked by the mechanical key.
(b) Key battery and vehicle battery saving function:
In the smart key system, 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 could be drained. For this reason, if this state continues for more than 10 minutes, the smart key system automatically becomes deactivated.
Reinstatement Conditions:
* A wireless door lock control signal (lock, unlock) is input and the ID code matches.
* A user carries the key and pushes a lock switch on an outside handle.
* The driver door is locked or unlocked by the mechanical key.
16. KEY DIAGNOSTIC MODE (Using the Techstream)
HINT
Key diagnostic mode checks if the electrical key transmitter within a selected oscillator/antenna detection area is operating normally. The results are output through the wireless door lock buzzer (in the right 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 / Smart Communication Check.
(e) Check the values by referring to the table below.
Smart Key
(f) When the electrical key transmitter is brought near the selected oscillator/antenna, check that the wireless door lock buzzer sounds.
(1) *1: Door electrical key oscillator (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 door electrical key oscillator (front passenger seat outside transmitter).
* *3: Perform the same inspection above for the door electrical key oscillator (driver side rear seat outside transmitter).
* *4: Perform the same inspection above for the door electrical key oscillator (passenger side rear seat outside transmitter).
(2) *5: Indoor electrical key antenna (front inside transmitter)
HINT
Place the electrical key transmitter on the driver or front passenger seat cushion.
(3) *6: Indoor electrical key antenna (rear 1 inside transmitter)
HINT
Place the electrical key transmitter on the rear 1 seat cushion.
(4) *7: Indoor electrical key antenna (for rear 2 inside transmitter)
HINT
Place the electrical key transmitter on the rear 2 seat cushion.
(5) *8: Back door electrical key antenna (for Outer)
HINT
Hold the electrical key transmitter at the same height as the rear bumper upper surface and aligned with the center of the rear of the vehicle, as shown in the illustration.