I have a 2013 Edge SEL with just under 2k miles on it.  I have filled the tank many times, usually filling from 1/4 tank and not had any issues.  The weather here this week has been bad so I didnt get to fill up at 1/4 tank and the low fuel warning came on yesterday.  I went about 5 miles after it came on and filled up.  I noticed when I got in and started it, after the gas pump clicking off like it was full, that it only showed 3/4 of a tank and 256 mi to E.  I didnt feel like getting back out and putting my card in etc to get the last 1/4 so I went on.  As I pull out of the gas station the gauge then bumped up to between 3/4 and full, with the 256 mi to E staying the same.  I drove another 3 miles or so and it then went all the way to full and over 300 mi to E.  I have never had this happen before and wonder if it is a normal occurance or if I should put a call in to the dealership.  
  
Thanks in advance! 
April