Functional Description - Radio Frequency Hub (RF Hub)

WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.

The Radio Frequency Hub (RFH):

receives the input request to start from the KIN.
energizes the key fob transponder in order to read it.
sends a random code to the transponder and in return, receives a crypt code from the transponder.
validates the key fob using LF antennas.
validates that the brake is engaged.
sends a request to the BCM to change the ignition state.