Keyless Access System Description - Control/Function (2018 2019 2020)
Smart Entry Function
The keyless access/TPMS 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/TPMS control unit sends a door lock/unlock signal and an answer back signal to the MICU via the B-CAN.
Keyless Entry Function
The keyless access/TPMS control unit receives keyless transmitter LOCK/UNLOCK signal from the remote via the RF unit. The keyless access/TPMS control unit authenticates the signal from the remote, and sends a door lock/unlock signal and trunk release signal to the MICU via the B-CAN.
Remote Search Function
Determines if the remote is present inside the vehicle during operation.
Lighting and Indicator Function
The keyless access/TPMS control unit controls the engine start/stop switch illumination, displays information in the multi-information display (MID), and illuminates the keyless access indicators in the gauge control module.
Backup Communication Function
When key authentication between the remote and the keyless access/TPMS 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 button 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/TPMS 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/TPMS 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, keyless buzzer will sound and the multi-information display (MID) (Only at the vehicle in the ON mode) will show a warning. Before the remote battery level falls to the point where the remote cannot be detected, the multi-information display will show a warning and an alarm will sound.
Registration Facility
The keyless access/TPMS 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 indicator comes on in the gauge control module.
Client Emergency
When the engine start/stop switch button is pressed continuously at least three times or once for 1.5 seconds or longer in an emergency while driving, the vehicle ACCESSORY mode is activated, and the transmission is automatically shift to the N position/mode. When the vehicle speed becomes 1.2 mph (2 km/h) or slower, the transmission automatically changes to the P position/mode, and the vehicle OFF (LOCK) mode is activated. In this mode, the steering wheel remains unlocked.
Panic Function
When you press the PANIC button on the remote, the keyless access/TPMS control unit sends a signal to the MICU via the B-CAN to sound the horn and activate the exterior lights.
Walk Away Auto Lock Function
The walk away auto lock system detects where the remote is and locks all the doors on the vehicle when all the doors are closed and the remote is outside of the vehicle and out of the range.
To operate the walk away auto lock system, it is necessary to enter the auto lock mode. To enter the auto lock mode, all of the following conditions must be met:
- The vehicle is in the OFF (LOCK) mode.
- All doors are closed.
- All the remotes are not inside of the vehicle.
- The remote is outside and within 1.5 m (5 ft) from the vehicle.
The vehicle's buzzer beeps once to confirm that the auto lock mode is activated.
When the remote is carried beyond 1.5 m (5 ft) from the vehicle and remains outside of this range for more than 2 seconds, the system is activated and locks all the doors. At that time, the keyless buzzer sounds and some exterior lights will flash. However, if the remote remains within 1.5 m (5 ft) from the vehicle for 30 seconds or more after entering the auto lock mode, the doors will automatically lock.
The system does not work under the following conditions:
- The remote is inside of the vehicle.
- If the remote is away more than 1.5 m (5 ft) from the vehicle after closing all the doors.
- If a communication error occurs between the remote and the vehicle.
The walk away auto lock system can be cancelled temporarily by customization.