Remote Keyless Entry (RKE) 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.

The RKE system uses non-switched battery current received through a fused B(+) fuse in the BCM so that the system remains operational regardless of the ignition switch position. The Radio Frequency Hub (RF-Hub) is the primary RKE system controller as well as the RF receiver. The RF-Hub validates the vehicle access code of each Finger Operated Button Integrated Key (FOBIK) transmitter from which it receives RF signal inputs. It ignores requests from any transmitter for which it has no stored vehicle access code.

The RF-Hub communicates and shares resources with the BCM and many other electronic modules in the vehicle over the CAN data bus. The RF-Hub also stores the RKE system "Customer Programmable" feature settings received over the CAN data bus from the EVIC. When the RF-Hub receives an input from a valid transmitter source, it uses these settings and internal programming to send the appropriate electronic request messages to the BCM and other ECUs over the CAN data bus to invoke the proper RKE system features and responses.

The RKE system circuits and transmitter 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 RKE system circuits or transmitters, it stores a DTC in its memory circuit.