Hi, i have my tuscan since 6 days, but the previous owner told me, there is a switch or relaise above the tank. It activates after a crash in the boot. It can be possible that you must reset the relaise.
Its worth a try. There is a kind of hump in the boot above the tank top edge. Pull it up, its held by velcro. Under there to right side I think is the fuel cut off. There's a rubber push button on the top.
Barry i think this is when you switch on both the fuel & temperature gauges go through there initialising the gauge for fuel is not hitting the fuel zero switch on the pcb Ian