Right after fueling it stays in the fuel mode if you don't reset it. Cannot remember the procedure since I just wait for the bike to do it automagically after X miles. Best guess is that you hold the reset button for 3-5 seconds. I use Trip #1 for individual ride miles and Trip #2 to track the mileage between tanks and MPG. Reset #2 after filling up and away I go.
Currently MPG sucks because I just got it out of winter storage and cannot keep from twisting the throttle
If yours keeps switching back then yes one of the sensors is stuck or bad. Maybe/hopefully it'll correct itself...
And, yes, others have had the low fuel sequence not work correctly. Test it close to home and always rely more on the odometer reading than a gauge or at least in conjunction.
Even bone dry she weighs over 600lbs
