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Discussion starter · #61 · (Edited)
Update for the spreadsheet.

This is going to be something many of us will probably really like. I might be onto something here. Well, two things. One, I put in the spreadsheet a while ago the ability to turn off traction control however I never checked about turning off AdvanceTrac (which apparently you press "OK" twice on the traction control option and it turns off the system completely for the SHO PP models), embarrassingly, I didn't know about that feature. This is something I will further investigate and hopefully be able to add, for everyone, true traction control off.

Also, something I'm DESPERATELY hoping I'm correct on is the ability to alter the steering feel such as heavier or lighter. Personally, I have always hated how light the steering is in every single Taurus besides the PP models. Within the firmware itself of the PSCM, there are calls for torque value and whether or not torque value is enabled. This leads me to believe it's referring to the torque value of the steering column (since it's electric steering, this makes sense) and how much resistance it generates giving a lighter or heavier feel. However, compared to tons of other PSCM firmwares from other Fords, these values are all identical. Meaning they probably don't do anything. The only other thing different between all the firmwares was the last line related to the torque value area which is just tons of numbers in a sequence. I believe this is some type of "tune" if you will for the PSCM to determine how heavy or light it should feel.


I would test all this right now, however my poor Taurus hasn't had a battery in it for a week now because I sold it and have been waiting for a new AGM battery to come in (which it so desperately needed) and that should be very soon. Hopefully I can return with the ability to alter the steering feel for those, including me, who really wish the steering was a tad heavier!


Oh and remember, if anyone has trouble accessing the spreadsheet through the link, please let me know. I haven't heard anything at all so I assume it's been functioning properly!
 
Discussion starter · #63 ·
WONDERFUL NEWS


I have successfully discovered a change in the PSCM to create a substantially tighter steering feel.




So essentially, what I had done was grab the PSCM firmware from all vehicles sharing the same PSCM part number with the Taurus. This ended up being the MKS, MKT, and Flex. Between several trims of the Taurus, they all shared the same sequence of numbers that define what hexadecimal number to enter in the as-built data for a given feature or change. ONLY the Performance Package SHO was different and had it's own sequence. This is the same story for the MKS, MKT, and Flex. Each vehicle shared their own unique sequence based off their engine, whether that be a 2.0T, 3.5L, 3.7L, etc. Given that the SHO PP was the odd one out being it's own personalized sequence against a non PP SHO, I stole it from the file and pasted it into mine and flashed it into my Taurus. This ended up changing a number in the as-built from an "8" to a "5". This is now known to be the difference. A "8" should be what everyone has unless you specifically have a Performance Package SHO, in which you should have a "5" present. This is all updated in the spreadsheet and is available for all to see and enter into their vehicle!

Upon starting the car, I noticed the steering wheel felt exactly the same as I remembered. Extremely light and floaty. Almost too easy to turn. After putting the car in drive and driving off, I took the first turn at the end of the street and immediately was aware of a substantial increase in strength required to turn the wheel. The wheel is even stiff enough to return to the center position on it's own with ease, where as before I had to assist it in returning straight given how light it was.


There are a total of 11 unique sequences I have found between these four vehicles using this specific PSCM. I have not tested any of them besides the default Taurus (of course) and the Performance Package SHO sequence. To put this in perspective, my 2015 Mustang has selectable steering modes (comfort, normal, sport). My Taurus's steering now feels just between comfort and normal. Maybe a little closer to the normal mode. This is exactly what I wanted and couldn't be happier with how much more connected and solid the car feels. No more looseness.

I will soon probably test the other sequences and see if any happen to be any lighter or heavier and create an array of options for all of us to choose. It sucks that we can't simply just press a button to change our steering, but hell, this is certainly better than nothing at all for the Taurus.



I am still working on the AdvancTrac control for now. I'm investigating as to why my Taurus wouldn't keep traction control off in the first place, so that I gotta figure out real quick. Other than that, I'll investigate more into getting a true traction control off control for all non Performance Pack Taurus's.

If there are any questions, let me know! Check out the spreadsheet and enjoy some better steering!
 
installed Forscan have OBD II module, now need to know how to use it, first time using diagnostic software


A lot of stuff you can do. Of course there is a lot more for the newer cars. I’m certain others will chime in but one of the first things aI used it for was to obtain the code for the door keypad and then I added two new keys, programming the transponders.


Sent from some little thing I hear voices from.
 
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[So essentially, what I had done was grab the PSCM firmware from all vehicles sharing the same PSCM part number with the Taurus. This ended up being the MKS, MKT, and Flex. Between several trims of the Taurus, they all shared the same sequence of numbers that define what hexadecimal number to enter in the as-built data for a given feature or change. ONLY the Performance Package SHO was different and had it's own sequence. This is the same story for the MKS, MKT, and Flex. Each vehicle shared their own unique sequence based off their engine, whether that be a 2.0T, 3.5L, 3.7L, etc. Given that the SHO PP was the odd one out being it's own personalized sequence against a non PP SHO, I stole it from the file and pasted it into mine and flashed it into my Taurus. This ended up changing a number in the as-built from an "8" to a "5". This is now known to be the difference. A "8" should be what everyone has unless you specifically have a Performance Package SHO, in which you should have a "5" present. This is all updated in the spreadsheet and is available for all to see and enter into their vehicle![/COLOR][/COLOR]

Upon starting the car, I noticed the steering wheel felt exactly the same as I remembered. Extremely light and floaty. Almost too easy to turn. After putting the car in drive and driving off, I took the first turn at the end of the street and immediately was aware of a substantial increase in strength required to turn the wheel. The wheel is even stiff enough to return to the center position on it's own with ease, where as before I had to assist it in returning straight given how light it was.
That's very interesting.

Is there a hardware change between the PP and other tauruses? My only concern here is that the programming change is meant to work with a rack that was designed for it, with some aspect perhaps beefed up to handle the increased load? All speculative of course as the racks could be the same and then it's merely a programming change.

But very interested. I've actually never minded the steering feel in my Taurus, but i also never really drove it aggressively to care. But still, i've always liked a nice heavy steering feel
 
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A lot of stuff you can do. Of course there is a lot more for the newer cars. I’m certain others will chime in but one of the first things aI used it for was to obtain the code for the door keypad and then I added two new keys, programming the transponders.


Sent from some little thing I hear voices from.
How do you find the codes and program the transponder keys?
 
Discussion starter · #69 ·
That's very interesting.

Is there a hardware change between the PP and other tauruses? My only concern here is that the programming change is meant to work with a rack that was designed for it, with some aspect perhaps beefed up to handle the increased load? All speculative of course as the racks could be the same and then it's merely a programming change.

But very interested. I've actually never minded the steering feel in my Taurus, but i also never really drove it aggressively to care. But still, i've always liked a nice heavy steering feel



I personally do not think it's a physical hardware difference, such as a rack and pinion. I believe the rack and pinion are shared with the Explorer if I'm not mistaken. I wasn't concerned about any damage considering electric steering is simply an electric motor mounted on either side of the steering column or gear and just applies a programmed amount of torque to the steering column assisting the driver to turn the wheel. Essentially this programming change was just lessening the amount of assist or torque from the motor giving the wheel a heavier/tighter feel when steering.


I hope no damage is caused, haha. But I have yet to hear, see, or feel anything weird the last few days it's been altered.
 
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Discussion starter · #71 ·
Just did some parts looking up. I didn't do a complete lookup, but it appears you are right. Just one rack.

Very interesting...

Indeed. Kinda funny knowing the wheelbase width is just about the same on the Taurus as the Explorer. I'd imagine the rack and pinion is quite robust considering the weight of the Explorer.
 
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WONDERFUL NEWS


I have successfully discovered a change in the PSCM to create a substantially tighter steering feel.




So essentially, what I had done was grab the PSCM firmware from all vehicles sharing the same PSCM part number with the Taurus. This ended up being the MKS, MKT, and Flex. Between several trims of the Taurus, they all shared the same sequence of numbers that define what hexadecimal number to enter in the as-built data for a given feature or change. ONLY the Performance Package SHO was different and had it's own sequence. This is the same story for the MKS, MKT, and Flex. Each vehicle shared their own unique sequence based off their engine, whether that be a 2.0T, 3.5L, 3.7L, etc. Given that the SHO PP was the odd one out being it's own personalized sequence against a non PP SHO, I stole it from the file and pasted it into mine and flashed it into my Taurus. This ended up changing a number in the as-built from an "8" to a "5". This is now known to be the difference. A "8" should be what everyone has unless you specifically have a Performance Package SHO, in which you should have a "5" present. This is all updated in the spreadsheet and is available for all to see and enter into their vehicle!

Upon starting the car, I noticed the steering wheel felt exactly the same as I remembered. Extremely light and floaty. Almost too easy to turn. After putting the car in drive and driving off, I took the first turn at the end of the street and immediately was aware of a substantial increase in strength required to turn the wheel. The wheel is even stiff enough to return to the center position on it's own with ease, where as before I had to assist it in returning straight given how light it was.
You're doing God's work AS. I gotta start tinkering with my Taurus because this is one of the things that bug me royally. I don't mind the floaty SW around town but at highways speeds it is way too loose, so this gives me hope. Given that it now has electric assist I really can't understand why it doesn't tighten at speed from the factory. Programming such thing is as easy as pie.
 
Discussion starter · #74 ·
You're doing God's work AS. I gotta start tinkering with my Taurus because this is one of the things that bug me royally. I don't mind the floaty SW around town but at highways speeds it is way too loose, so this gives me hope. Given that it now has electric assist I really can't understand why it doesn't tighten at speed from the factory. Programming such thing is as easy as pie.

What's funny is it actually does tighten itself (essentially the motor lowers it's torque output assist) the higher speed you're going, but it isn't a significant amount. I still haven't had any issues yet since the change. I'll probably start screwing with the other numbers I found associated with the other vehicles sharing the same PSCM and judge any differences in steering weight.
 
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Discussion starter · #75 · (Edited)
Another update in regards to the traction control option. There is the ability to add the simple TC on and off, however turning off AdvancTrac entirely is a SHO only feature as I've described earlier. I believe the ability to turn off TC completely by pressing "ok" twice quickly on the "off" option is modified in the ABS. Essentially we're telling the ABS system we have the 14" brakes from the PP rather than the standard 13" brakes.

I'll give this a shot and see if it grants the ability. However, I'm unsure as to how many of you are comfortable messing with something like the ABS system. We aren't messing with the firmware itself (which is exceptionally dangerous), so mechanically the car should always do what it needs to do. I have yet to experience any safety issues or irreversible situations when modifying only as-built data. The only way the module will be completely screwed up is if something happens during a writing process, such as a disconnect or the car battery died. I'll report back if I can completely turn off TC, but again I do believe I've located the ability within the ABS module.
 
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Discussion starter · #76 ·
New to Forscan looks to me like I'm missing some modules. Like BCM I have my extended license.

Wait, are you sure? I have yet to talk with anyone who uses FORScan on a 2010-2012, but if those model years are unable to have their BCM modified, that's vital information.
 
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Wait, are you sure? I have yet to talk with anyone who uses FORScan on a 2010-2012, but if those model years are unable to have their BCM modified, that's vital information.
This could be the case and the answer to why I cant see the BCM model. When I looked at the spread sheet it shows the changes that could be made from years 2010 to 2019 so I thought I was good to go. Hopefully someone with a 2010 to 2012 will verify what's happening.
 
Discussion starter · #78 ·
This could be the case and the answer to why I cant see the BCM model. When I looked at the spread sheet it shows the changes that could be made from years 2010 to 2019 so I thought I was good to go. Hopefully someone with a 2010 to 2012 will verify what's happening.

Unfortunately, I never received any information from a 2010-2012 owner. I had assumed the BCM was the same architecture as the 2013+, but never would I have imagined it doesn't even have modifiable code. What year and trim is yours exactly?
 
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Unfortunately, I never received any information from a 2010-2012 owner. I had assumed the BCM was the same architecture as the 2013+, but never would I have imagined it doesn't even have modifiable code. What year and trim is yours exactly?

I always thought the 2012 to 2013 model year change also included a total rewire and reconfiguration of most of the electrical systems. Not surprised to see 2010-2012 isn't as complex.
 
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