Distant Voice,
When I went through type rating for the 135 it was emphasized to me by both my instructor and TRE that there was no such thing as a "Spurious" LOW FUEL caption. It's either in fuel or it isn't. If it comes on believe it, follow the actions required by the FRC's, LAND within 10 minutes and argue the toss afterwards.
Also, if the Transfer Pumps are switched off the captions are ON - and, if you want to do a restart, the first thing that needs to happen is the ENG MAIN Switch to off - not put a Prime Pump to ON.
As for the FUEL caption, that illuminates when the fuel level Indicated reaches approx 40 in the PT and 35 in the STBD Supply Tanks. However, if the Supply sensors are faulty and constantly reading Full, (47 & 43), then the FUEL Caption won't appear.
Last edited by Fortyodd2; 1st Nov 2015 at 15:27.