Remote Keyless Entry System

WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.

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

The RFH communicates and shares resources with the BCM and many other electronic modules in the vehicle over the vehicles CAN data busses. The RFH also stores the RKE system Customer Programmable feature settings received over the CAN data bus from the Electronic Vehicle Information Center (EVIC). When the RFH 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 (CAN-C) and other electronic modules 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 RFH. When the RFH monitors a problem in any of the RKE system circuits or transmitters, it stores a Diagnostic Trouble Code (DTC) in its memory circuit.