GENERAL INFORMATION




  • Each vehicle is provided with two keyless operation keys, and up to four keyless operation keys can be registered in the vehicle’s KOS-ECU.
  • The keyless operation key also incorporates an indicator lamp that enables the driver to check if the signal is transmitted correctly or if the battery in the key is discharged. (Refer to .)
  • The keyless operation key incorporates an emergency key to lock/unlock the front doors in case the battery in the keyless operation key is discharged or the keyless operation system is not working normally. Also by using it simultaneously with the keyless operation key (insert the emergency key into the keyless operation key in the inverted direction), the engine starts. (Refer to .)
    note If the immobilizer related system failure occurs, the engine may not start.
  • The driver can customise KOS; enabling/disabling all the system functions, enabling the door locking/unlocking function only, or enabling the engine starting function only. (Refer to .)

CONSTRUCTION DIAGRAM








Main components and functions
Parts name
 Functional description
KOS-ECU
 Controls KOS by using the following inputs/outputs and communications.

  • Input from the unlock sensor and lock switch on each door, input from the push switch on the IG knob
  • Communications with ETACS-ECU, Engine-ECU and combination meter via CAN
  • Wire communication with the steering lock unit
  • Wireless communication with the keyless operation key via the receiver antenna module and inside/outside transmitter antennas
  • Output to the outer buzzer
Steering lock (incorporates push switch and steering lock unit)
 The steering lock has two unlocking mechanisms; a mechanical mechanism that uses an emergency key and an electrical mechanism. In the electrical unlocking mechanism, the steering lock communicates with KOS-ECU via wire, and when requested by KOS-ECU, the steering lock unlocks for two seconds.
Keyless operation key (incorporates emergency key)
  • The keyless operation key receives signals sent from each inside/outside transmitter antenna, certifies the keyless operation key ID code, calculates the key ID, and sends the reply data signal to KOS-ECU via the receiver antenna module. The lock button and unlock button operations of keyless operation key transmit signals to KOS-ECU via the receiver antenna module.
  • If two or more keyless operation keys registered in KOS-ECU respond at the same time, their signals would interfere. To avoid this interference, each signal from KOS-ECU is given the priority* data, and the keyless operation keys respond in accordance with this priority.
Lock switch
 LH
 Locks all the doors and the tailgate when a driver carrying the keyless operation key presses the lock switch on the front door outside handle or on the tailgate lock release handle.
RH
Tailgate
Unlock sensor
 LH
 The unlock sensors incorporated in the LH door outside handles unlock all the doors and the tailgate when a driver carrying the keyless operation key pulls the LH door outside handle.
RH
 The unlock sensors incorporated in the RH door outside handles unlock all the doors and the tailgate when a driver carrying the keyless operation key pulls the RH door outside handle.
Tailgate lock release handle
 Locks all the doors and the tailgate when a driver carrying the keyless operation key presses the lock switch on the LH door outside handle, the RH door outside handle or on the tailgate lock release handle.
Outside transmitter antenna assembly
 LH
 Converts the data output from KOS-ECU via wire into a signal, and sends it to the keyless operation key. (For the transmission area, refer to Operation Manual - Door Entry Function .)
RH
Inside transmitter antenna assembly
 Front
 Converts the data output from KOS-ECU via wire into a signal, and sends it to the keyless operation key. (For the transmission area, refer to Operation Manual - Engine Start Function .)
Rear
Outside transmitter antenna assembly (Tailgate)
 Converts the data output from KOS-ECU via wire into a signal, and sends it to the keyless operation key. (For the transmission area, refer to Operation Manual - Door Entry Function .)
Outer buzzer
 The outer buzzer sounds when:

  • The doors are locked or unlocked by the door entry function.
  • The lock switch on the keyless operation switch is pressed when the IG knob is in the "LOCK" (OFF) position and the push switch is in other than the "ON" position.
  • The lock switch is pressed on the keyless operation key from inside the car.
  • The lock switch on the keyless operation key is pressed when the door is ajar.
Receiver antenna module
 Receives the operation signals from the lock/unlock switch on the keyless operation key and then converts them into data and sends them to KOS-ECU.
Combination meter (Multi information display)
 Communicates with KOS-ECU via CAN. Receives the warning request or warning information from KOS-ECU, flashes the warning indicator.
ETACS-ECU
 Communicates with KOS-ECU via CAN. Receives the door lock/unlock request from KOS-ECU, outputs the lock/unlock signal, and flashes the turn signal lamp to inform the driver that the doors are locked/unlocked. Using the multi mode function of the keyless entry system, the door mirrors can be retracted or opened, the power windows can be opened or closed, and the sunroof can be fully closed according to the patterns of the door lock/unlock request from the KOS-ECU.
Engine-ECU
 Communicates with KOS-ECU via CAN. Permits/inhibits the engine starting and controls the engine operation. Send atmospheric pressure data.
note *: When registering the keyless operation keys, KOS-ECU numbers each key (1 to 4) in the order they are registered (initial priority). This priority is renewed each time the doors are locked/unlocked and the IG knob is pressed. For example, when only keys 1 and 3 have responded to the signal sent from KOS-ECU, the new priority of the keys would be 1-3-2-4. When keys 3 and 4 have responded, then the priority of the keys becomes 3-4-1-2.

System configuration