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Exhaust Fluid Warning, wont go away

37K views 11 replies 7 participants last post by  6L strokin 
#1 ·
So i got about 3500 miles on it and all of a sudden i get a warning, saying 700 mile range left. I called ford they tell me just to add some more fluid. well I add 2.5 gal, and its still telling the same thing. Anybody know how to reset the DEF sensor.
 
#2 ·
add more there is only 4 sensors in it, its not like a fuel gage, It has to hit the half full mark to change to 1/2 full
 
#4 ·
Not 100% sure should say in the owners manual
 
#5 ·
4.5 is sticking out in my head for some reason
 
#8 ·
agreed, 2.5 gal should get it above the half way point, especially since it wasn't empty to start with.
Maybe a sensor went bad.

I have 4100 miles on mine and I haven't seen a warning, nor added any.

The manual doesn't narrow it down much; shows in a pick up, the tank will last anywhere from 1700 miles to over 9000 miles, dependent upon driving style and whether towing heavy loads.
 
#9 ·
That fix is in the update you will receive in the neatral flare update as well.
 
#12 ·
i was at the dealer one day and a guys def fluid wouldnt read he added any, they had to reflash his computer....
 
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