GENERAL INFORMATION

• The door entry function enables the driver to unlock all the doors and the trunk lid by just pulling the front door outside handle or operating the trunk lid opener switch, without taking the keyless operation key out from his/her pocket or bag when he/she is carrying a keyless operation key which has been registered in the vehicle’s KOS-ECU. It also allows the driver to lock all the doors by pressing the lock switch on the front door outside handle (the trunk lid is locked automatically when it is closed).
  
• The engine starting function enables the driver to start the engine without taking the keyless operation key out from his/her pocket or bag and without using the conventional mechanical key when he/she is carrying a keyless operation key which has been registered in the vehicle’s KOS-ECU.
  
• The keyless entry function, by operating the keyless operation key incorporated lock/unlock switch or the trunk lid switch, enables the remote control operation (opens/closes all the doors and the trunk lid) in the same manner as the conventional keyless entry system.
  
• The immobilizer function prevents the engine from being started by using an unauthorized key.
  

• 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

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 interior/exterior 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 interior/exterior 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, unlock button, and trunk lid 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	Driver’s door	Locks all the doors when a driver carrying the keyless operation key presses the lock switch on the front door outside handle.
	Front passenger’s door
Unlock sensor	Driver’s door	The unlock sensors incorporated in the driver’s front door outside handles unlock driver’s the door when a driver carrying the keyless operation key pulls the driver’s door outside handle.
	Front passenger’s door	The unlock sensors incorporated in the passenger’s front door outside handles unlock all the doors when a driver carrying the keyless operation key pulls the front door outside handle.
Trunk lid opener switch		By pressing the trunk lid opener switch on the trunk lid while he/she is carrying the keyless operation key, the trunk lid is unlocked.
Exterior transmitter antenna assembly	Driver’s side	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 .)
	Front passenger’s side
Interior 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
Antenna & buzzer assembly	Exterior transmitter antenna assembly (trunk lid)	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/trunk lid switches 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.
Engine-ECU		Communicates with KOS-ECU via CAN. Permits/inhibits the engine starting and controls the engine operation. Send atmospheric pressure data.

System configuration