Adding Trail Control to 302A

[Tall Tail]

Are there any tutorials, parts list, programming directions for adding trail control to a 2022 4x4 302A?

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[JIMFOUNTAIN]

Trail control, trail turn assist and 1 pedal drive are on my wish list. Previous attempts at this failed but there have been a lot of SW updates since I experimented using Forscan in April 2022. At that time the conclusion was that Tremors and Raptors have different ABS hardware and software so not possible.

Hoping someone else has given it a go since then and had success!

 

[Tall Tail]

Trail control, trail turn assist and 1 pedal drive are on my wish list. Previous attempts at this failed but there have been a lot of SW updates since I experimented using Forscan in April 2022. At that time the conclusion was that Tremors and Raptors have different ABS hardware and software so not possible.

Hoping someone else has given it a go since then and had success!

Correct me if i am wrong, but trail control is just low speed cruise control. I have CO-PILOT360 ASSIST 2.0 with stop and go adaptive cruise. Shouldn't this be all that is necessary for trail control?

I have another thread on adjusting the min cruise control speed that got very little interest, but i think it would accomplish the same goal. Am i mistaken?

Trail turn assist and 1 pedal drive are also on my wish list, but i figure i would address the low hanging fruit one at a time.

 

[hotrodmex]

Trail control, trail turn assist and 1 pedal drive are on my wish list. Previous attempts at this failed but there have been a lot of SW updates since I experimented using Forscan in April 2022. At that time the conclusion was that Tremors and Raptors have different ABS hardware and software so not possible.

Looking at those tables it looked very bespoke, with basically only the single configuration available on those modules (like, you couldn't configure it for a 157" like the normal ABS module, only for the 145"). The brake setup is even different in how the brake lines are ran.

Normal lines run on the left side of the diff:

Tremors run in the center:

Now that may be just because it's better for off-road and not related, but it is a difference.

I have a mad idea for hacking the e-brakes to try and actuate them individually for Trail Turn Assist. I haven't looked into the feasibility yet, but I think the only thing that would hinder this (or just make it more complicated) is if there is a position sensor on the caliper, which there very well likely is be because they are everywhere now.

Correct me if i am wrong, but trail control is just low speed cruise control.

In a way, yes, but you have to think about how CC responds to speed adjustments on road, and how you'd want different throttle response on trails. My guess is it only works up to low speeds due to resolution of the system for finer throttle and brake control.

Also, it sounds like it works in reverse, and I forgot about how hitting the brakes doesn't cancel it, just adjust speed.




I believe Hill Descent control is brake-only, even though it operates similar.

 

[Pedaldude]

I thought that all the gen 14 trucks got the same ABS pumps that can brake individual wheels?

Looking into how the lane centering and lane keeping work, it mentions in some literature that torque vectoring through differential braking is what is used.

If they are comfortable braking individual front brakes for hands free driving at highway speeds, I’m sure that they’re able to resolve and process information pretty damned well.

It’s too bad that the ABS performance under braking is a little underwhelming.

Tremor’s alternative brake line routing is likely more for protection against debris than anything else. A poorly placed stick/branch can potentially tear out the conventionally routed brake lines.

Toyota has their A-trac system that can brake individual wheels to lock the tire spinning in the air to obviate the need for a locking differential. Ford has something similar that I think is one of the FX4 modes.

This is a pretty old feature that dune buggies, stunt cars and other custom vehicles would have. I’ve heard them called both turning brakes and fiddle brakes, they can be either hydraulic or cable operated with either a single or dual hand lever setup and I always thought it would be cool to have one.

I perform between 3-5 U-turns a day when I drive and it would be nice to reduce the turning circle by braking the inside rear wheel and I don’t think that it would flat spot the tires at low speed. It would be useful if you could have trail turn assist without having to be in an off-road mode.

 

[lynskynbnd]

I added Trail mode with FORScan the other day.

 

[Porpoise Hork]

Don't the FX4's have this by default too or is it just on the Tremor and Raptors?

 

[JIMFOUNTAIN]

I added Trail mode with FORScan the other day.

Trail Mode is what 4x2 F150s have from the factory. Per the manual it just adjusts throttle response to aid in controlling wheel spin for 2WDs. I experimented with it as well but removed it since 4x4s have deep snow and mud modes.

 

[JIMFOUNTAIN]

Don't the FX4's have this by default too or is it just on the Tremor and Raptors?

FX4s have hill descent. Similar to Trail Control in that you can use the cruise control speed up/down buttons or gas pedal/brake to modulate speed (and hitting the brake doesn't cancel). But hit the valley or a hill and you stop.. it won't step on the gas.

Side note: some have successfully added Hill Descent to non FX4s. Requires the switch, a tweak to a connector and some Forscanning. Search the Forscan thread if interested.

 

[lynskynbnd]

Trail Mode is what 4x2 F150s have from the factory. Per the manual it just adjusts throttle response to aid in controlling wheel spin for 2WDs. I experimented with it as well but removed it since 4x4s have deep snow and mud modes.

It turned on the 4x4 on my XL. ?‍
I have not played with Trail mode off road yet to see what else it may do.

 

[lynskynbnd]

FX4s have hill descent. Similar to Trail Control in that you can use the cruise control speed up/down buttons or gas pedal/brake to modulate speed (and hitting the brake doesn't cancel). But hit the valley or a hill and you stop.. it won't step on the gas.

Side note: some have successfully added Hill Descent to non FX4s. Requires the switch, a tweak to a connector and some Forscanning. Search the Forscan thread if interested.

Hill Decent just drags the brakes and the brake lamps stay on when it slows the vehicle. My buddy behind me let me know the brake lamps were on while using Hill Decent and not pressing the brake pedal. Long term use could overheat the brakes? ?‍

 

[powerboatr]

i thought in 4x4 L with rock crawl it does modulate each wheel if it slips
at least thats how it feels to me parking the trailer on the river rock driveway up hill, i use 4x4 L rock crawl i can feel truck start to loose traction the truck suddenly regains traction , i assume its abs braking the loose wheel .
i have also done same maneuver in 4A and same loss of traction feeling then full traction

 

[Tall Tail]

Looking at those tables it looked very bespoke, with basically only the single configuration available on those modules (like, you couldn't configure it for a 157" like the normal ABS module, only for the 145"). The brake setup is even different in how the brake lines are ran.

Normal lines run on the left side of the diff:

Tremors run in the center:

Now that may be just because it's better for off-road and not related, but it is a difference.

I have a mad idea for hacking the e-brakes to try and actuate them individually for Trail Turn Assist. I haven't looked into the feasibility yet, but I think the only thing that would hinder this (or just make it more complicated) is if there is a position sensor on the caliper, which there very well likely is be because they are everywhere now.



In a way, yes, but you have to think about how CC responds to speed adjustments on road, and how you'd want different throttle response on trails. My guess is it only works up to low speeds due to resolution of the system for finer throttle and brake control.

Also, it sounds like it works in reverse, and I forgot about how hitting the brakes doesn't cancel it, just adjust speed.




I believe Hill Descent control is brake-only, even though it operates similar.

I would like to get this back on topic. Trail Control is low speed cruise control as defined in the video above. It is different than hill descent and trail mode. I believe it only comes on raptors and tremors. Has anyone added Trail Control to a f150 that didn't come with trail control from the factory?

 

[hotrodmex]

Has anyone added Trail Control to a f150 that didn't come with trail control from the factory?

I don't think you'll get an affirmative, as this isn't even configurable in the regular ABS module. In the Tremor module at 760-03-01 *xxx there is

HDC FECAD (Trail Control)
HDC FECAE (Trail Control + T1PD [one pedal driving])

in the regular ABS module it's just HDC in 760-03-01 *xxx. The others don't exist anywhere in the configuration.

I'd be down to crowdfund someone getting the Tremor ABS module and seeing if they can get it to work.

 

[DHBPhoto]

Hill Decent just drags the brakes and the brake lamps stay on when it slows the vehicle. My buddy behind me let me know the brake lamps were on while using Hill Decent and not pressing the brake pedal. Long term use could overheat the brakes? ?‍

Long term use DOES overheat the brakes. I just about lost my brakes on a long descent and missed a turn. There is no substitutue for M in 4Lo.

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