check the 2020 ForScan thread

 

This is the posting in the 2020 spreadsheet thread, thanks to ZooDad for relentlessly pursuing the solution to this issue, this was the magic bullet on my 2020 truck, now I am seeing 900 miles range with around the town driving.

Originally Posted by ZooDad View Post
Great news for all the larger than stock fuel tank people.

I found an odd entry in the IPC where the fuel level is captured from either the IPC or PCM. My 2020 and three others are all set to PCM. I had the change to IPC tested and voila the DTE rose to the calculated level it should be.

The change has been made in the spreadsheet.

IPC 720-09-01 xx*x xxxx xxxx

If your current value is 4 change to 0
If your current value is 6 change to 2
The difference is if you have Trailer TPMS (TTPMS) enabled

ZooDad

 

Once I’m home I’ll be curious to see if there is any further change and my ipc plain English is reading it at70gal

 

what value do you have in the IPC for the tank size ?

Nice to see 1000+ DTE

ZooDad

 

the value for 70 gal I believe a5a but I did what the spread sheet had
about to Check / possibly change the other ipc value

 

gotcha
thanks

 

Was just at 780 or so and with the update it’s accurate with my avg being 21.8 mpg

 

has anyone looked in to changing the trip screens from having dte to how many gal used?

 

Thanks to you all! I really appreciate it

 

Thanks ZooDad for the info on IPC change, Currently at half tank showing 327 DTE, alert the change DTE went up to 478! Waiting on a full tank now but should show about 1,000 DTE which is what it should be!

Thanks bud!

 

Hey Sharkhunt what size fuel tank are you running?

 

Great find! Thanks! One quick question for you. I'm not clear on the impact of the TTPMS on the fuel tank. I have the TTPMS installed. how does that impact the coding?

 

I am not the expert on this, but in the end as I understand it all the thigh bone is connected to the hip bone, so a lot of the programming is conditional, that is a given setting that you are modifying is also read by other features/settings, so it is looking for certain values as well. So in this case, with TPMS, it looks for a different value, one of a few, in this line of code, than if there isn't TPMS. Hence the conditional programming. You will see this on other lines of code as well, where it will tell you to make the code line this value if you have this, or this value if you have that.

 

Rich53 is basically correct
min this data set there are four (4) different “features” with on/off values
Air Suspension control - on/off
Trailer TPMS - On/off
Downshift indicator - on/off
Then
Fuel Level either PCM or IPC with each of the above items in on/off state

So lets say you do not have TTPMS enabled today and stock tank. Your value is 4. Then you install a larger tank. Change to 0. When you get a trailer and purchase the TTPMS kit you would change your value to 2

I hope that all makes sense

Keith

 

First, i'm not new to Forscan, I've made several changes in the past. That said, is anyone having issues with Forscan not recognizing their 2020s? I was going to update my fuel tank size this morning and it says vehicle not recognized, contact developers.