Keyless Access System Description - Control/Function (2014 2015 2016 2017)
Smart Entry Function
The keyless access control unit detects the input signal of the door outer handle touch sensor or the outer handle lock switch, and authenticates 2-way communication with the remote. Then the keyless access control unit sends a door lock/unlock signal and an answer back signal to the MICU via the B-CAN.
Keyless Entry Function
The RF unit receives the keyless transmitter signal from the remote, then sends an RF signal to the keyless access control unit. The keyless access control unit authenticates the RF signal, and sends a door lock/unlock signal and trunk lid unlock signal to the MICU via the B-CAN.
Remote Search Function
Determines if the remote is present inside the vehicle during some operation or function.
Key Lockout Prevent Function
The lockout prevent function observes the key switch signal input. If the input is ON (remote in the vehicle), the system will not lock the doors. Even if the driver manually locks and closes the doors with a remote in the vehicle (input ON), the MICU energizes the driver's door actuator and unlocks the driver's door.
When the trunk is closed with the remote left in the trunk, the external RF unit detects the location of the remote and does not lock the trunk.
Lighting and Indicator Function
The keyless access control unit controls the engine start/stop switch indicator, displays information in the multi-information display (MID), and illuminates the keyless access system indicators in the gauge control module.
Electric Steering Lock
The electric steering lock control unit is built into the electric steering lock, and it controls the steering lock motor. When the remote code is identified, the electric steering lock control unit unlocks the steering lock by controlling the steering lock motor.
Backup Communication Function
When key authentication between remote and keyless access control unit is not possible because of a system abnormality or a drop of the battery voltage of the remote, the immobilizer function can be canceled by pressing the engine start/stop switch once and bringing the remote close to the engine start/stop switch while the indicator of the engine start/stop switch is flashing. This causes the built-in immobilizer receiver of the engine start/stop switch to receive the immobilizer signal and to send the immobilizer signal to the keyless access control unit.
Immobilizer Function
The immobilizer function uses the GEN 6 protocol, and the immobilizer function is deactivated by mutual communication between the keyless access control unit, the PCM, and the MICU via the S-NET.
Alarm Function
Detects the door open or close with the vehicle in the ACCESSORY/ON mode. When the remote is taken out of the vehicle, the keyless buzzer will sound and the multi-information display (Only at the vehicle in the ON mode) will show a warning. Before the remote battery level falls to the point where remote cannot be detected, the multi-information display (MID) will show a warning and alarm will sound. Command to display shift to P warning should be transmitted via the B-CAN.
Registration Facility
The keyless access control unit can store up to 6 remotes with the HDS.
Fault Diagnosis Function
The system has a fault diagnosis function. If any malfunction occurs, the keyless access system indicator comes on in the gauge control module.
Client Emergency
If for any reason you need to shut off the engine while the vehicle is in motion, press the engine start/stop switch button quickly 2 times, or hold the engine start/stop switch button for 1.5 seconds. The engine turns off, and the vehicle mode switches to ACCESSORY. In this mode, the steering wheel remains unlocked.
Panic Function
When you press the PANIC button on the remote, the keyless access control unit sends a signal to the MICU via the B-CAN to sound the horn and activate the exterior lights.