Problem With 97 S500
 

Ok so in my 97 S500, even with a full tank the low fuel light flashes on the gauge, if you shut off the car and turn it on again it goes away, but then it keeps happening and the check engine light comes on and i get code P0455 which is Evaporative Emission Control System Leak Detected (no purge flow or large leak) Anyone have any ideas at all?