Re: flashing gas light?
Same thing here with me and many others. Always throws the P0455 code, evap emissions leak, large leak. Sometimes the low fuel will blink and no code thrown, other times it gets thrown. The car only runs the diagnostic test for this while sitting (such as at a stop light, waiting to turn), and only while 1/4 through 3/4 full. Thus if you only drive highway, or through short lights, the blinking fuel light will not often come on. If you search Mercedes sites this appears to occur on them quite often. I recently changed my gas cap and so far it has worked...only time will tell.