[MadDawg10]

My low fuel light has been coming on when the trip meter says I have used 25 gallons of gas and the gas gauge reads about 1/8 of a tank. The miles to empty says about 40, but isn't counting down mile for mile as I drive.

When I have filled up, I have put in about the same amount as the trip meter says I have used.

I thought this truck was supposed to have a 35 gallon tank? There can't be 10 gallons of "reserve" can there?

I have only filled it up a few times since I only have 1000 miles. Is there some kind of self-calibration the system needs to go through with more use?

Is mine normal compared to the other trucks? I have a dealer appointment for Monday hoping they will find the computer is programmed for the wrong tank size or something like that.

Thanks,
Aaron

I know I’m late to the club on this one. But I am having a very similar issue. I bought a 2013 F250 6.2L lariat that had about 123k on it. Filled up one time before needing to have some work done to it and spent about $72 @ about $2.80 at the time. So about 26 gallons were put in. So after being in the shop for 2 weeks, I got it back and noticed it plowed through a tank of gas. Having the similar thought that this truck has a 35 Gal tank on it, which it does.(unless in the work that was done they “switched it”/ which I would be livid about) Then I started trying to track what was being used. Filled up and within 11.3 miles it went from a full tank to 3/4. I used 21.6 gallons before filling up again between 1/4 and Empty. It took exactly 21.7 to fill it back up. Yet again, within 13 miles it had gone from full to 3/4 of a tank. I’ve gone right at 200 miles on this tank so far and it reads just a pinch above 1/4 a tank with only 15.7gallons burned so far. At this point I should still be over half a tank. Anyone have any solutions or thoughts on this? Thanks.

 

[MadDawg10]

You can burn out your fuel pump by running the tank too dry. That's probably why Ford set it up to get you to fuel up before the fuel level in the tank gets too low and overheats the fuel pump and burns it out. It's good practice to fill up whenever the fuel gauge says 1/4 tank. That way, you will protect your fuel pump and keep it from burning out so soon.

I agree. And usually I do. But at this point, I would be filling up every 200 miles only burning 16gallons on what should be a 35gallon tank going between 425-450miles depending on MPG

 

[MadDawg10]

I should also reference when said work had to be done, they had to replace the battery. Is there a chance they didn’t reset the BMS and it’s causing the gas gauge to somehow read wrong?