2015 Information Display DTE calculation error?
Senior User
Joined: Oct 2010
Posts: 266
Likes: 1
From: Sunshine Coast, BC
I just checked this on my 3.5EB. Changed it back and forth a few times sitting in the driveway with the engine off.
DTE normal 719
DTE tow 681 <-- less than normal mode, seems right to me it should be less for towing
DTE normal 730 <-- normal mode changed, wtf?
DTE tow 681
DTE normal 730
I wouldn't use DTE to know when to fill up in any case. For that I use the "gallons used" in Trip 1 meter which I reset every time I fill up.
I did that for years in my last F350 and literally never looked at the fuel gauge. If you know how far off the "gallons used" is over a tank (and in my case it always indicated less used than actual used), you can pretty much tell to the ounce how much you have left.
Also, as an experiment, I ran DTE down to 0 to see what would happen since I knew I had fuel left. And what happened was nothing. It just sat on 0.
I use DTE like a video game to keep me entertained while driving. I add trip miles + DTE and that is High Score. So far on this F150 my high score is 768. I think I can get that into the 800s
DTE normal 719
DTE tow 681 <-- less than normal mode, seems right to me it should be less for towing
DTE normal 730 <-- normal mode changed, wtf?
DTE tow 681
DTE normal 730
I wouldn't use DTE to know when to fill up in any case. For that I use the "gallons used" in Trip 1 meter which I reset every time I fill up.
I did that for years in my last F350 and literally never looked at the fuel gauge. If you know how far off the "gallons used" is over a tank (and in my case it always indicated less used than actual used), you can pretty much tell to the ounce how much you have left.
Also, as an experiment, I ran DTE down to 0 to see what would happen since I knew I had fuel left. And what happened was nothing. It just sat on 0.
I use DTE like a video game to keep me entertained while driving. I add trip miles + DTE and that is High Score. So far on this F150 my high score is 768. I think I can get that into the 800s
Senior User
Joined: May 2006
Posts: 101
Likes: 0
I believe this works as it should. I know have over 1300 towing miles on my Truck. When I have the Truck DTE on towing my miles drop according to my 12 miles or so per gallon. When I change it to regular, it jumps up to the unloaded average of about 19 or so. I thought this was very useful on my 800 mile trip when I towed my boat. Now I need to remember to change it back to normal for the Wife.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I recently used the tow/haul mode on the transmission to do some mountain driving, and since I wasn't actually towing or hauling the average indicated MPG was in the 19's. But my to-date normal mode indicated MPG is more like 18. Sure enough, when I changed the DTE calculation to "tow" the distance to empty jumped up, and when I put it back to "normal" it came down again.
So, my guess from that limited observation is that the DTE calc uses the average to-date MPG for the tow/haul mode in the transmission to generate the "tow" distance. And, it uses the to-date indicated MPG from the "normal" mode of the transmission, and perhaps including Sport mode" to generate the other distance.
If that's true, then using the tow/haul mode of the transmission when you aren't actually towing or hauling can significantly mess up the DTE calculation.
So, my guess from that limited observation is that the DTE calc uses the average to-date MPG for the tow/haul mode in the transmission to generate the "tow" distance. And, it uses the to-date indicated MPG from the "normal" mode of the transmission, and perhaps including Sport mode" to generate the other distance.
If that's true, then using the tow/haul mode of the transmission when you aren't actually towing or hauling can significantly mess up the DTE calculation.
2nd Gear
Joined: May 2024
Posts: 2
Likes: 1
distance to empty issue
hello everyone, i am new to FTE. i have a 2015 F350 DRW 4x4 Platinum and i have an issue i cannot find any information anywhere on the internet. i recently had to replace both batteries and I am not sure if this is related or what. i just filled the tank up yesterday and my miles to empty on my cluster is showing only 85 miles to empty. is there a way to reset this or to find out what is going on here?
EDIT: i did forget to mention that the fuel gauge is reading full the only thing that if is off or has an issue is the DTE reading as far as i can tell
EDIT: i did forget to mention that the fuel gauge is reading full the only thing that if is off or has an issue is the DTE reading as far as i can tell
Last edited by LC27028; May 31, 2024 at 06:39 AM. Reason: fprgot information
Moderator
Joined: May 2005
Posts: 8,209
Likes: 1,225
From: San Antonio, TX
Welcome to FTE LC27028,
You dredged up and old thread and you seem to have a problem that's not related to those who want precise calculations on their fuel mileage/DTE readings. Also, you have a Super Duty, which has a somewhat different electrical system. I would suggest that you go to the 1999-2016 Super Duty forum, which can be found on the main forum page, then make a new thread there.
Here's a link to that forum.
https://www.ford-trucks.com/forums/forum30/
You dredged up and old thread and you seem to have a problem that's not related to those who want precise calculations on their fuel mileage/DTE readings. Also, you have a Super Duty, which has a somewhat different electrical system. I would suggest that you go to the 1999-2016 Super Duty forum, which can be found on the main forum page, then make a new thread there.
Here's a link to that forum.
https://www.ford-trucks.com/forums/forum30/
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1999 - 2016 Super Duty
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Sep 14, 2006 09:50 PM
