Keyless Access System

System Description

The keyless access system consists of the keyless access control unit, the ignition switch control unit, the door outer handle touch sensors, the LF (low frequency) antennas, the RF (radio frequency) units, the keyless access indicator, the keyless buzzer, and the remote. The function of the system is to allow the driver keyless entry into the vehicle along with starting the engine without an ignition key.

RF (Radio Frequency) Units

RF unit 1 is located behind the display control module and RF unit 2 is located on the rear shelf. The RF units combine the RF signal sensing and RF signal receiving to identify the remote's code.

LF (Low Frequency) Antennas

The front interior, rear interior and rear shelf LF antennas send the signals to the remote placed in the interior. The driver's door, front passenger's door, and rear bumper antennas send the signals to the keyless remote outside of the vehicle.

Ignition switch control unit

The ignition switch control unit is built in the ignition switch, and it controls the steering lock solenoid. When the built-in key is inserted in the ignition switch or the remote code is identified, the ignition switch control unit makes the steering lock solenoid release.

Touch Sensor and lock buttons

The touch sensors and lock buttons are built in the driver's and front passenger's door outer handles. To operate the door locks without the built-in key while carrying the remote, grip the door outer handle to unlock the doors and press the lock button on the door outer handle to lock the doors.

Fail-safe Function

The system has a fail-safe function. If any malfunction occurs, the keyless access indicator in the gauge comes on.

Self-diagnostic Function

The system also has a self-diagnostic function.