Does your S550 have Active Nibble Control enabled?

[Jordy19892012]

I was using FORScan, looking at my Power Steering Control Module and realized that Active Nibble Control was disabled. Every attempt I tried to enable this feature, I realized that after I would cycle the ignition, ANC would revert back to being disabled.

Has anyone ran into this same problem with their S550 Mustang? I was under the impression that every 15-23 S550 (regardless of trim level) had this feature, and had it enabled from the factory.

To preface, I own a 2019 Mustang GT (Base) with the Coyote, and a MT-82. I have owned the car since new, and currently have about 25K on the odometer.

My concern with trying to enable ANC is that I have been battling a shimmy in my steering wheel while driving/coasting (typically around 55mph the shimmy is the worst), and I have been able to cancel out common causes for a shimmy (wheels/tires road forced balance, all tires are very round, no loose front end components, alignment is within spec, brake rotors are not warped/ does not shake while braking)

*UPDATE* I re-installed my factory wheels and tires, and experience the same shimmy at the same speeds with my newer 20 inch wheels (the factory wheels/tires rode smooth when the car was new)

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[shogun32]

You probably overlooked some bushings/joints. You might want to post what brand model tire and wheel and size. And post the road force report. How much weight did they use and what was the score?

 

[Jordy19892012]

You probably overlooked some bushings/joints. You might want to post what brand model tire and wheel and size. And post the road force report. How much weight did they use and what was the score?

All of my tires visibly had less than 9 lbs of road force, and ran smooth on the balancer. One of the wheels that took the most amount of weight is currently a rear tire, and took 3.25oz. The rest wanted less than 1.5oz.

I’m running 275/35/20 Continental DWS06+ tires on all four corners, and am running an aftermarket American Racing wheel with hubrings.

I just performed an alignment, and do not have any loose front end components.

I first noticed the shimmy around 10k-15k miles ago when I installed my first set of used 19 inch wheels, but quickly realized all 4 of those tires were out of round.

 

[shogun32]

Racing wheel with hubrings.

Amr wheels are low quality. You have an outlier vis a vis your other 3. Buy a new wheel and or tire. And check you haven't double stacked the centering rings or missing one.

And I hope to God you don't have bolt on spacers anywhere

 

[Jordy19892012]

Amr wheels are low quality. You have an outlier vis a vis your other 3. Buy a new wheel and or tire. And check you haven't double stacked the centering rings or missing one.

I verified all of the wheels were not bent before installing the tires (I have ran into that issue in the past with previous vehicles, safe to say I have learned my lesson). Luckily, the hub rings are a size that makes it difficult to accidentally have two installed on one hub.

What is throwing me for a loop is that I re-installed my factory wheels and tires (which rode smooth when the car was new) and I am still experiencing the same shimmy at the same speed.

My 2nd and 3rd set of wheels had tires that were out of round, naturally, that is when the shimmy started. I was figuring that with round tires, and true wheels that were hub-centered that my shake would finally disappear.

These 20's I have installed are the 4th set of wheels I have had on this car. 1st set was the factory 18's. The 2nd and 3rd sets were 19's.

 

[shogun32]

Bad or loose rear axle nut is not unlikely.
You slapped that wheel on a lathe and ran a dial indicator over every face? Roundness or unbent doesn't mean the casting isnt problematic.

 

[Jordy19892012]

Bad or loose rear axle nut is not unlikely.
You slapped that wheel on a lathe and ran a dial indicator over every face? Roundness or unbent doesn't mean the casting isnt problematic.

I have not checked the rear axle nut torque yet, I will add that to my to-do list.

I did not use a dial indicator on each wheel when I verified they were not bent prior to installing tires. This will sound funny, but I used a screw driver and kept it stationary on the balancer, getting the tip of the screwdriver as close to the wheel without actually touching the wheel, and allowed the balancer to spin the wheel while I noted if the gap between the screw driver and the wheel increased, or not.

I feel confident that what I am experiencing is not a simple wheel/tire issue since the shimmy remained even after I re-installed my factory 18 inch wheels.

I'll check the rear axle nuts and see if they've become loose. Now that you mention that, I do remember hearing something about a washer on the rear axle nut creating issues for other fellow S550 owners.

 

[ing3nious]

Active nibble control - Well that’s a new term for the day https://www.autotrader.ca/editorial/20180424/what-the-heck-is-active-nibble-control/

 

[KingKona]

Shimmy in the steering wheel?

EPAS actively cancels out any wobbling/vibration coming through the steering wheel, so please tell us exactly what it is you're experiencing when you use that phrase. Is the steering wheel actually moving?

It sounds to me like you have an EPAS issue.

 

[Qcman17]

I had a nibble in my steering wheel after my new DW06+ tires were installed last Spring. The shop who installed them did a shitty static balance job so I had my dealer Roadforce them and its fine now. Which makes me think my car doesn't have this Active Nibble Control activated either.......

 

[NTXChris]

I had a nibble in my steering wheel after my new DW06+ tires were installed last Spring. The shop who installed them did a shitty static balance job so I had my dealer Roadforce them and its fine now. Which makes me think my car doesn't have this Active Nibble Control activated either.......

Funny, I've been getting a slight jiggle between 45 and 50 miles per hour ever since installing DWS06+ on my car. Not enough to bother me, and I don't spend much time at those speeds where I live, so I haven't bothered to get the tires rebalanced.

 

[Qcman17]

Funny, I've been getting a slight jiggle between 45 and 50 miles per hour ever since installing DWS06+ on my car. Not enough to bother me, and I don't spend much time at those speeds where I live, so I haven't bothered to get the tires rebalanced.

I do think a bit of it is in the tires as it seems to vary sometimes but RF balancing definitely helped/cured it and it did occur in the 45ish to 55ish mph range mainly. It always seemed worse when first driving the car after sitting.

 

[WItoTX]

Never heard of nibble control until today.

My money is on brake rotors. You threw a gauge on all 4 and confirmed they are not warped?

 

[ing3nious]

Never heard of nibble control until today.

My money is on brake rotors. You threw a gauge on all 4 and confirmed they are not warped?

Rotors would more likely be the culprit if you shimmy under braking. If it’s while driving then it’s tires/rims/bearings.

 

[Jordy19892012]

Shimmy in the steering wheel?

EPAS actively cancels out any wobbling/vibration coming through the steering wheel, so please tell us exactly what it is you're experiencing when you use that phrase. Is the steering wheel actually moving?

It sounds to me like you have an EPAS issue.

Yes, I can visibly see the steering wheel moving back and forth, I don't really feel it in my seat or the rest of the car. Driving at 80mph I can let go of the steering wheel and it doesn't shake, so weird.

I feel I might have an EPAS issue also, but figured I would check the ANC values before taking my car into the dealer. I always seem to end up with a new scratch or ding, so I dread taking it in.

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