GENERAL

• The keyless operation key incorporates the lock and unlock switches on it. Like the conventional keyless entry system, remote control operation and multi mode operation (opens/closes the power windows, sunroof, and door mirrors) can be performed by using these switches. 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 the immobilizer function that inhibits starting the engine 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 incorporates an emergency key with a transponder to lock/unlock the doors and start the engine in case the battery in the keyless operation key is discharged or the keyless operation system is not working normally.
  
• The driver can customise KOS to enable/disable all the system functions, enable door locking/unlocking function only, or enable engine starting only.
  

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. When the lock/unlock switch on the keyless operation key is pressed, corresponding signal is sent 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 front door outside handles unlock all the doors and the tailgate when a driver carrying the keyless operation key pulls the front door outside handle.
	RH
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 front door outside handle or on the tailgate lock release handle.
Exterior 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 - Engine Start Function.)
	RH
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 (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 keyless operation key is brought out of the car when the IG knob is in other than the LOCK position. The lock switch on the keyless operation key is pressed when the IG knob is in other than the LOCK position. The lock switch on the keyless operation key is pressed 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 switches on the keyless operation key, converts them into data and sends them to KOS-ECU.
Combination meter (keyless operation alarm 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.

System configuration