Having an issue I'd like to bounce off the brain trust. My 2020 F350 SRW Platinum Ultimate has the adaptive steering. My 2017 F350 KR did also. Same issue with both. The adaptive steering seems to be over compensating for the crown of the road, and when in the slow lane on the interstate you almost have to turn the wheel to the right because its trying to steer me to the left.

The opposite is true when in the fast lane on the interstate. It still thinking its in the slow lane and i have to fight the steering wheel to the right because its trying to steer me into the concrete barriers.

When I go into forscan and reset all the steering modules or disconnect the battery cables, it works beautifully for a 1000 miles or so, then goes back to how it was.

I've seen posts about disabling adaptive steering on the plain English IPC in forscan. Tried that but it doesn't disable the adaptive steering.

Any suggestions or insight to this? I'd love to be able to disable adaptive steering altogether if possible!

-40Grit

 

I have AS and wasn’t aware that it actively made any corrections. My understanding is that it just changes the steering ratio and tightens steering resistance at higher speeds.

 

My understanding is it compensates for the crown and wind to reduce the amount of steering effort needed to stay straight.

 

Have you seen that in the manual? I’ve read everything on it and never saw that. If it does, that’s news to me. I’ve never felt mine actively do anything. I have other vehicles that do actively steer and compensate and my truck doesn’t do any of that. Maybe you got lucky and got a special one.

My guess is that you have an alignment issue. Will be curious what others have to say in this. I could be wrong. I’m open to learn.

 

This might help - https://www.ford.com/support/how-tos...tive-steering/

 

This is correct

 

There IS some confusion, Thanks to Fords use of the term Adaptive Steering. Vehicles using EPAS, car, SUV's and pickups up to F-150 use EPAS. It uses pull/drift compensation for crown and cross wind correction. The entire steering gear is one unit which allows for this, is fully electric, and it is also used for auto park and lane keep assist.

Super Duty uses hydraulic steering, conventional tie rods and drag links. It does not have the sensors embedded in it for the pull/drift compensation, nor any electric motors to do lane keep assist or auto park. The Adaptive steering is mounted on the steering shaft pre-steering gear and changes ratios based on speed. It does not have any motors in it to assist with steering, so cannot do PDC. The system that does the trailer backup assist is a separate unit because you can have TBA without AS.

The main difference are the sensors in the steering system. It detects steering wheel angles and compensates when the angle increases from true for a certain length of time, so if you have a cross wind on a straight road and have to go slightly right on the wheel to compensate, the EPAS will apply a slight amount of right power to ease the pressure on the driver. Same thing on crowns.

Super Duty AS just changes ratios based on speed, nothing more. It reduces the amount of turns needed at slow speed, and tightens up center at high speeds, but has no compensation for pull/drift.

If you have crown follow, it is the alignment causing it.

 

What sensor or module would cause an increased steering effort to the right and less effort to the left? Steering Angle Sensor? Steering Effort Sensor?

When the steering system is reset from disconnecting the battery, the alignment is spot on. No drift or pull. Tires wearing evenly. Then gradually over time, the truck changes the resistance based on some algorithm i assume.

My 2017 King Ranch had the identical situation. Both trucks are bone stock.

 

Thats just it, there aren't any in the Super Duty trucks. The only sensors are for speed and if you have the trailer backup assist. Pull/Drift Compensation is only available with EPAS.

 

Oh I see. Interesting. Wonder what my issue could be then and why pulling the battery cables "resets" it?

 

First of all you have been given some conflicting information. Most of the info pertaining to Adaptive Steering is correct, in that it does not compensate for road crown etc and does change steering ratio. The modual is housed inside the steering wheel.

Your 2020 has another unit though, not related to the Adaptive Steering option, that does compensate (increase or decrease effort) for wind and road crown. It is an electronic power steering assist mounted on the steering shaft. Your 2017 does not have this. Niether system will actively steer the vehicle.

(Standard on 2020+ XLT and up)

 

If so, pull fuse #9 under the hood and see what happens.