Passive Entry (Pe) System

WARNING: This page is about a different car, the 2020 Chrysler 300 and 2019 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

In the PE 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 handle. When the system senses a hand approaching the capacitive switch in the door handle pull or detects a button press of the decklid release switch, it sends out challenge messages through the Low Frequency (LF) antennas to authenticate the presence and location of a valid FOBIK.

The FOBIK responds by sending a Ultra High Frequency (UHF) message back to the receiver within the 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 decklid switch being activated, it sends an electronic Unlock Request message over the CAN data bus to the BCM to automatically unlock and allow entry to that aperture.

The PE system circuits and FOBIK inputs are continually monitored by the microcontroller and software contained within the RF-Hub. When the RF-Hub monitors a problem in any of the PE system circuits or FOBIK inputs, it stores a DTC in its memory circuit.