Keyless Access System Description
Smart Entry Function
The body control module detects the input signal of the door outer handle touch sensor, the outer handle lock switch, the tailgate outer handle switch, or the tailgate lock switch, and authenticates 2-way communication with the remote. The body control module then activates the door lock actuators or tailgate release actuator, and an answer back. In addition, vehicles equipped with the power tailgate send the smart unlock permission signal. The body control module also activates the tailgate release actuator when the tailgate outer handle switch is pressed. For details on the illumination patterns of the warning lights and the functional check of the system, refer to keyless access system symptom troubleshooting information .
Smart Entry Answer Back Function
LOCK
When the body control module receives a lock signal, it sends a signal to the turn signal lights and the keyless buzzer sounds.
UNLOCK
When the body control module receives an unlock signal, it sends a signal two times to the turn signal lights and the keyless buzzer sounds.
Remote Search Function
The function determines if the remote is present inside the vehicle during certain operations or functions. It also detects when the door is opened and closed with the vehicle in the ACCESSORY/ON mode. When the remote is taken out of the vehicle, the keyless buzzer will sound and the gauge control module (Only when the vehicle is in the ON mode) will show a warning.
Backup Communication Function
When key authentication between the remote and the body control module 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 power switch once and bringing the remote close to the power switch while the light (white) of the power switch is flashing. This causes the immobilizer signal to be sent to the body control module via the LF antenna of the power switch.
Remote Engine Start System
Start the Engine
The remote engine start feature is initiated by first pressing the lock button, then pressing and holding the "START" button within 5 seconds on the remote transmitter. An RF signal from the remote transmitter is received by the body control module, which then sends the request to start the engine to the PCM. At the same time, the body control module authenticates the key for the immobilizer system. The PCM starts the engine and sends feedback to the body control module indicating the status of the engine.
Remote Engine Start Link
According to outside air temperature, the climate control, the rear window defogger, the seat heater, and the mirror defogger* operate while the remote engine start is operating.
*: With mirror defogger
Key Lockout Prevent Function
The body control module monitors whether or not there is the remote in the vehicle. If the remote is in the vehicle, the system will not lock the doors. The non-selectable unlock function: If the driver manually locks and closes the doors with the remote in the vehicle, the body control module energizes the all door lock actuators and unlocks the all doors. The selectable unlock function: If the driver manually locks and closes the doors with the remote in the vehicle, the body control module energizes the driver's door lock actuator and unlocks the driver's door. In addition, when the keyless lockout prevent function operates, the answer back is performed.
Immobilizer Function
The immobilizer function provides mutual authentication between the body control module, the PCM, and the VSA modulator-control unit in the turn the vehicle to the ON mode. The engine stays running after engine start-up if the immobilizer signal matches. The body control module authenticates the VSA modulator-control unit and the immobilizer signal only one time, when the vehicle is turned to the ON mode after resetting of the battery, removing and installing the back-up fuse or removing and installing the VSA modulator-control unit. For some model, the brake pedal must be depressed to perform the immobilizer authentication.
Alarm Function
Detects if the door is opened or closed while the vehicle in the ACCESSORY or ON mode. When the remote is taken out of the vehicle, the keyless buzzer will sound and the gauge control module (Only when the vehicle is in the ON mode) will show a warning. Before the remote battery level falls to the point where the remote cannot be detected, the gauge control module will show a warning and an alarm will sound.
Registration Facility
The body control module can store up to 6 remotes using 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.
Customer Emergency
When the power switch is pressed continuously at least three times or once for 1.5 seconds or longer in an emergency while driving, the engine turns off, and the vehicle mode switches to the ACCESSORY mode. Furthermore, pressing the power switch while driving will set off a buzzer several times in order to avoid unintended operation of the power switch.
Panic Function
When you press the PANIC button on the remote, the body control module sounds the horn, and activates the exterior lights.
Walk Away Auto Lock Function (If Equipped)
The walk away auto lock system detects where the remote is and locks all doors and the tailgate when all the doors and the tailgate 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, the following conditions must be met:
- The vehicle is turned to the OFF (LOCK) mode.
- All doors including the tailgate are closed.
- The remote is outside but within 1.5 m (5 ft) from the vehicle.
Once the system enters the auto lock mode, the keyless beeper sounds once. 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 engages and locks all of the doors including the tailgate. 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 and tailgate 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 and tailgate.
- If a communication error occurs between the remote and the vehicle.
The following conditions will cause a delay for the system to engage:
- If a door or the tailgate is opened after the system enters the auto lock mode.
- If the power tailgate is not fully closed.
The walk away auto lock system can be cancelled temporarily by using the customized settings. See the owner's manual for more information.
Keyless Access System Operation Manual Customize
The keyless access system can be enabled and disabled by the operation shown in the table. The system is enabled and disabled each time the unlock button is pressed on the remote in customize mode.
Failsafe Function
If there is a failure in the keyless access system that terminates the keyless access features, the system enters the failsafe mode and the keyless access indicator flashes.