FORScan - software to enable/disable features in your truck
02-07-2019, 09:13 PM
Senior Member
Ok. I’m assuming you also changed tire size at the same time you changed wheel size.
So it sounds like something has changed since back then when we were otherwise stuck with the error light?
Also, since you can do the PCM relearn, does that also mean that things like shift points in the tranny also get fixed with a tire size change in the BCM using Forscan?
I’m trying to help a buddy with his ‘16 Platinum, not so much for my ‘15.
Thanks guys.
Last edited by DuneRunr; 02-07-2019 at 11:19 PM.
02-07-2019, 09:22 PM
Yes, once you set that to "no cancel" then after initially turning on the fogs with the headlights in the Auto position then the fogs should come on with the low beams on all subsequent instances unless you manually turn them off or use the high beams (if you don't have bambi mode set).
Man, if I could buy you a beer and a shot, I would. Thank you!
02-07-2019, 09:25 PM
The FORScan Guy
Thread Starter
Ok. I’m assuming you also changed tire size at the same time you changed wheel size.
So it sounds like something has changed since back then when we were otherwise sick with the error light?
Also, since you can do the PCM relearn, does that also mean that things like shift points in the tranny also get fixed with a tire size change in the BCM using Forscan?
I’m trying to help a buddy with his ‘16 Platinum, not so much for my ‘15.
Thanks guys.
The PCM relearn is for tire size & axle ratio changes.
The following users liked this post:
DuneRunr (02-07-2019)
02-07-2019, 09:29 PM
The FORScan Guy
Thread Starter
02-07-2019, 09:33 PM
Senior Member
On the previous post where I was quoted that was back before the PCM relearn was even available in FORScan. The PCM relearn when changing tire sizes on 2015-16's will only remove the P160A DTC that sets on some trucks but other trucks for some reason will show a different P40xx DTC (can't remember offhand) that the PCM relearn won't clear. So if you get the P160A DTC after changing tire size then try the PCM relearn but if you have the other one it won't help.
The PCM relearn is for tire size & axle ratio changes.
The PCM relearn is for tire size & axle ratio changes.
Ok, thanks Livin. So it sounds like the only true way to fix things like tranny shift points is to use Hypertech programmer?
Thanks.
02-07-2019, 09:42 PM
The FORScan Guy
Thread Starter
It's been a long time since I used my Hypertech programmer but I don't recall anything about it altering shift points unless there are newer versions of it that do.
The following users liked this post:
DuneRunr (02-07-2019)
02-07-2019, 10:05 PM
Junior Member
Join Date: Feb 2019
Location: Texas
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
I just purchased an elm module and downloaded forscan to start to play with some things. I have one ANNOYING issue with my truck that I would like to change. I make frequent stops during the day and jump out while the truck is running. When I put it in park, it only unlocks the front driver door. I would very much like for ALL doors and tailgate to unlock when I put it in park. My truck does not have settings for this. 2018 XLT Sport w/sync 3. Can anyone point me in the right direction to change this? I would very much appreciate it.
02-07-2019, 10:21 PM
Finally picked up my laptop and began playing with some of the settings. Thanks to all for the amazing work you've done on this. Question on the 'New Blue GT' theme.
I enable the necessary settings to get this display. The spreadsheet said I had to set 7D0-02-01 sixth character to 'D' which is the GT theme. What would happen if I set it to '5', the Raptor theme. Would the background display stay the new blue but with the Raptor animation? Or would it just break things.
Paul
I enable the necessary settings to get this display. The spreadsheet said I had to set 7D0-02-01 sixth character to 'D' which is the GT theme. What would happen if I set it to '5', the Raptor theme. Would the background display stay the new blue but with the Raptor animation? Or would it just break things.
Paul
02-07-2019, 10:25 PM
Senior Member
I don’t mean to use the programmer to specifically modify shift points, I just mean to modify the tire size so things like the speedo and transmission are in tune with the real speed again.
I hope that makes sense.
After putting larger tires on the truck, the speedo is off and it shifts too late causing lugging and such. Just trying to get things to operate somewhat normal again. I understand the overall drive ratio is now different and that can’t be changed via the computers, but I figured if the correct tire size was programmed in the BCM and the PCM was in tune with that, the tranny shift points would be better? I’m trying to figure out if I can do that for him with Forscan, or if he needs the Hypertech.
Thanks.
02-07-2019, 10:42 PM
Senior Member
I don’t mean to use the programmer to specifically modify shift points, I just mean to modify the tire size so things like the speedo and transmission are in tune with the real speed again.
I hope that makes sense.
After putting larger tires on the truck, the speedo is off and it shifts too late causing lugging and such. Just trying to get things to operate somewhat normal again. I understand the overall drive ratio is now different and that can’t be changed via the computers, but I figured if the correct tire size was programmed in the BCM and the PCM was in tune with that, the tranny shift points would be better? I’m trying to figure out if I can do that for him with Forscan, or if he needs the Hypertech.
Thanks.
It doesn't matter whether you use Hypertech or Forscan, you cannot directly influence transmission behaviour. That is why I have always opted for 3.73 geared trucks, as it'll have a bit more headroom than a 3.31 truck. Alternatively, you can get a tune and you'll have to worry no more.
Last edited by nubbins_; 02-07-2019 at 10:48 PM.
The following users liked this post:
DuneRunr (02-07-2019)