Passive Entry System

In the Passive Entry Keyless Go (PEKG) system the doors are unlocked passively; however, they must still be locked actively after exiting the vehicle using the tactile Lock  button on either front door Smart handle. When the system senses a hand approaching the capacitive switch in the door Smart handle pull it sends out challenge messages through the Low Frequency (LF) antennas to authenticate the presence and location of a valid FOB with Integrated Key (FOBIK).

The FOBIK responds by sending a Very High Frequency (VHF) message back to the receiver within the Radio Frequency Hub (RF-Hub). If the RF-Hub determines the FOBIK is valid and that it is located outside the vehicle in the same zone or vicinity as the door handle or liftgate switch being activated, it sends an electronic Unlock Request  message over the CAN bus to the BCM to automatically unlock and allow entry to that aperture.