2024 Ford F250 fuel tank resizing needs gauge cluster or ECU updated

[cdalee440]

I’m looking into replacing the OEM diesel fuel tank on my 2024 Ford F250 from the 34 gallon tank to a new 55 gallon tank so I don’t have to buy fuel in california. The way I drive back and forth to california and colorado it would pay for it in no time.
I can add the tank easily enough but the fuel gauge will not properly show the actual amount of fuel nor will it show the miles to empty.
Im told this is a simple update, using a Forscan tool, to change the tank size, similar to changing the tire size but who does these updates. I live in havasu and talked to the Ford dealer here in Havasu where I bought the truck new and they stated they won’t touch it. They have stated modifying the tank size in the computer would void my powertrain warranty. I don’t even have 6000 miles on it so that is not an option.
With all of the aftermarket tanks installed out there someone has had their tank size updated in the ECU to get computer gauges to reflect the larger tank? Am I wrong?

 

[Doc]

There shouldn't be a foot print in the ecu for a modification like that through forscan but could be wrong. Like for my dodge I downloaded alfaodb which you can look into also and I modified my fuel tank settings in there. It doesn't write a file so a tech shouldn't be able to see that regardless. The problem from quick searching is your truck is new so don't think they have cracked the computer yet to modify it through aftermarket options.

 

[Sherpa]

I installed an aftermarket SB tank in my 2018 ram 3500 which I think is 64 gallons compared to the stock 32 gallon tank. at the time there was no options
to change those settings. as for reading fuel levels correctly these aftermarket tanks use the original fuel sender so the depth of the tank is the same the
fuel levels will still be the same. 1/2 tank before was 16 gallons. 1/2 tank now would be 32 gallons. not hard. but the range left would be different.
-s

 

[TripleB]

Titan fuel tanks, I have them in all my trucks

 

[17 10 Flat]

I’m looking into replacing the OEM diesel fuel tank on my 2024 Ford F250 from the 34 gallon tank to a new 55 gallon tank so I don’t have to buy fuel in california. The way I drive back and forth to california and colorado it would pay for it in no time.
I can add the tank easily enough but the fuel gauge will not properly show the actual amount of fuel nor will it show the miles to empty.
Im told this is a simple update, using a Forscan tool, to change the tank size, similar to changing the tire size but who does these updates. I live in havasu and talked to the Ford dealer here in Havasu where I bought the truck new and they stated they won’t touch it. They have stated modifying the tank size in the computer would void my powertrain warranty. I don’t even have 6000 miles on it so that is not an option.
With all of the aftermarket tanks installed out there someone has had their tank size updated in the ECU to get computer gauges to reflect the larger tank? Am I wrong?

You may try going to F150/F250/350 Truck forum. Lots of smart people with Forscan.

There may be a thread in there.

 

[DarkHorseRacing]

I installed an aftermarket SB tank in my 2018 ram 3500 which I think is 64 gallons compared to the stock 32 gallon tank. at the time there was no options
to change those settings. as for reading fuel levels correctly these aftermarket tanks use the original fuel sender so the depth of the tank is the same the
fuel levels will still be the same. 1/2 tank before was 16 gallons. 1/2 tank now would be 32 gallons. not hard. but the range left would be different.
-s

True but the problem I'm hearing is the fuel level doesn't drop as quickly with the larger tank and so the computer thinks the fuel gauge sensor is defective and throws a code or puts some sort of message or light on the dash and quits showing fuel level or distance to empty leaving you guessing.

For the OP who seems to drive a set distance repeatedly it wouldn't be hard to manually track his fuel level, knowing he can probably make the whole distance in one tank.

 

[cdalee440]

Titan fuel tanks, I have them in all my trucks

Titan is who I’m working with and they have been nothing short of amazing trying to get me set up with a shop or dealer to solve the resizing of the tank electronically.

 

[CLdrinker]

Go to the super duty forums or FB groups.

The Tremor forum is a good group of people and can help

 

[cdalee440]

True but the problem I'm hearing is the fuel level doesn't drop as quickly with the larger tank and so the computer thinks the fuel gauge sensor is defective and throws a code or puts some sort of message or light on the dash and quits showing fuel level or distance to empty leaving you guessing.

For the OP who seems to drive a set distance repeatedly it wouldn't be hard to manually track his fuel level, knowing he can probably make the whole distance in one tank.

That is the only reason I haven’t bought a replacement tank yet.
Some dealers or aftermarket shops have got to be supporting this unless it’s just a case of waiting until someone can make Forscan work on MY2024 ECUs.
I’ll see if I can find something on a Ford truck forum too.

 

[CLdrinker]

Also the warranty comment is bullshit. They would have to prove the upgrade caused the problem that you need warrantied.

 

[Lumpy]

Why not an in bed transfer tank? Seems to be the easiest way. I run a 55 gallon in mine during the summer then pull it during the winter when Im not hauling the boat.

 

[eand28]

I’ve had forscan for about 8 years now. That change is an easy one. Unfortunately I’m not close enough to assist.

 

[DarkHorseRacing]

Why not an in bed transfer tank? Seems to be the easiest way. I run a 55 gallon in mine during the summer then pull it during the winter when Im not hauling the boat.

How does an in bed transfer tank fill the truck tank?

Is this a fuel pump and handle setup like a gas station and you stop and manually pump the transfer tank into the main tank on the road somewhere and then fill up both at the next fuel station?

Or is there a way to transfer fuel through the bed into the main tank with an electronic valve from the cab without having to stop?

 

[ChrisV]

How does an in bed transfer tank fill the truck tank?

Is this a fuel pump and handle setup like a gas station and you stop and manually pump the transfer tank into the main tank on the road somewhere and then fill up both at the next fuel station?

Or is there a way to transfer fuel through the bed into the main tank with an electronic valve from the cab without having to stop?

Gravity fed. Fills up to the neck of the gas lid.

 

[Bpracing1127]

I have the 60 gal s&b tank in my 2018 f250 and update the tank size using ForScan. It’s really simple to do. You need to buy the software (20$ or so) then you need the dongle amazon is like 5$ and you need to know which module to change. The ford forums have it figured out.

I did a lot of other things too.

Speed governor is off
Bambi mode
No seat belt charms
GPS while driving
Seat heater/coolers on touch screen

Lots more.

You are overthinking how easy this is

 

[HB2Havasu]

Maybe it's just me but I wouldn't trade years off my Ford factory warranty in exchange to save a few bucks on fuel by changing tank sizes. Have you thought of adding an in-bed tank that you can just pump fuel into your oem tank?

 

[RVRKID]

How does an in bed transfer tank fill the truck tank?

Is this a fuel pump and handle setup like a gas station and you stop and manually pump the transfer tank into the main tank on the road somewhere and then fill up both at the next fuel station?

Or is there a way to transfer fuel through the bed into the main tank with an electronic valve from the cab without having to stop?

https://titanfueltanks.com/products/travel-trekker-in-bed-aux-systems/travel-trekker-50-gallon-auxiliary-fuel-system-5410050

 

[Terminal Velocity]

Seems there is an issue with the 2023+ not being able to change the size. I wonder if putting a sender in the tank (if it fits) from a 48 gal factory tank would help some. It appears there is a couple things you can do, but it will not reflect true 100% of DTE, but will even itself out as you go through the tank.

2024 Diesel Forscan: Repercussions of Cannot Alter Fuel Tank Size - Ford Truck Enthusiasts Forums

2023+ Super Duty - 2024 Diesel Forscan: Repercussions of Cannot Alter Fuel Tank Size - Truck is 2024 Diesel. What happens if I replace the stock tank (34 gallons) with an aftermarket S&B (60 gallons) tank but cannot alter the fuel tank size? It's my understanding that Forscan cannot change the...

www.ford-trucks.com

 

[cdalee440]

Maybe it's just me but I wouldn't trade years off my Ford factory warranty in exchange to save a few bucks on fuel by changing tank sizes. Have you thought of adding an in-bed tank that you can just pump fuel into your oem tank?

Nope it’s not just you. This truck has just under 6000 miles on it and I won’t risk voiding my warranty because a tech said I screwed with the ECU when I upgraded the tank size. As for additional fuel I have a removable bed tank but when I stay in a hotel In Palmdale I have to worry about it being stolen since it’s not bolted in. Not bad mouthing Palmdale, just some of the residents there because it’s happened to me more than once.