Remote Function Actuator
WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The Remote Function Actuator (RFA) is installed at the base of the right C-pillar, behind the side trim. The RFA controls signal transmissions to and from the smart key and provides authorization to allow the vehicle to be started. The RFA is powered by 2 permanent power supplies from the Passenger Junction Box (PJB). The RFA communicates with the Body Control Module/Gateway Module (BCM/GWM) on the High Speed (HS) Controller Area Network (CAN) body systems bus.