DEF Level Warning - Why so early?
Trailering
Joined: Nov 2023
Posts: 18
Likes: 13
Nope. My 2023 SO goes through DEF quickly too. But in a couple years, this won't be an issue for me.
Mountain Pass
Joined: Oct 2007
Posts: 147
Likes: 19
From: Langley, B.C.
Another thing that I have noticed is that as soon as the dpf gets up to 65% capacity it will automatically initiate a regen.
Once it starts the soot level drops to zero in a very short time.
Once it starts the soot level drops to zero in a very short time.
More Turbo
Joined: Oct 2005
Posts: 562
Likes: 71
From: Garner, NC
Yup, the low DEF warnings are EXTREMELY IRRITATING!!!
500 miles to empty when towing on my truck starts before the gauge is even at half, then next comes after another 69 miles, then after another 50, then after 40 more.
Started carrying an extra 2.5 gallon jug just to stop the stinking warnings until the next time I fill at the pump.
On my old 2015 RAM, warnings didn't start until 200 miles to empty, then each 50 after that, but not nearly as annoying as my F250.
And, I would run my RAM all the way down to nothing before re-filling, no way I could stand to do that in my Ford.
500 miles to empty when towing on my truck starts before the gauge is even at half, then next comes after another 69 miles, then after another 50, then after 40 more.
Started carrying an extra 2.5 gallon jug just to stop the stinking warnings until the next time I fill at the pump.
On my old 2015 RAM, warnings didn't start until 200 miles to empty, then each 50 after that, but not nearly as annoying as my F250.
And, I would run my RAM all the way down to nothing before re-filling, no way I could stand to do that in my Ford.
Thanks for the comments to verify I'm not alone.
More Turbo
Joined: Feb 2011
Posts: 708
Likes: 188
In 2021, I as getting almost 2500 miles towing.
Lead Driver
Joined: Dec 2020
Posts: 8,636
Likes: 2,431
Reports of increased DEF use (compared to pre-2020) came with the 2020MY. And now it seems to have increased again with this newest gen.
https://www.ford-trucks.com/forums/1...def-usage.html
There have also been posts in the past claiming the increased DEF use comes with decreased EGR activity.
https://www.ford-trucks.com/forums/1...def-usage.html
There have also been posts in the past claiming the increased DEF use comes with decreased EGR activity.
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