Fuel Level Sensor
WARNING: This page is about a different car, the 2019 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
Inside the fuel tank there are two fuel level sensors 'A' and 'B', which output signals to the BCM/GWM assembly for fuel tank fuel level. This information is processed by the BCM/GWM assembly and passed to the Instrument Cluster (IC) to display the remaining fuel level and low fuel warning.