Low Fuel Warning Indicator (Base Cluster Only)
WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
There are 2 fuel tank senders, which are hardwired directly to the REM. The status of the fuel level from both senders is sent from the REM over the communication network to the instrument cluster. The instrument cluster uses these inputs to determine the overall fuel level in the tank and illuminates the low fuel warning indicator if the fuel level is low.