High pitched whistle at idle from steering

[Mark_Lock_Holmes]

Here's what my AI says:

The persistent high-pitched whistling noise at idle on your Ford Super Duty (which sounds like it's coming from the dash or steering column) is a known issue tied to the steering shaft bulkhead seal where it passes through the firewall.


Here are the primary ways owners on the enthusiast forums have been resolving it:

• The Quick Fix (Lubrication): The noise is usually just the rubber boot dry-rubbing against the spinning steering shaft. Applying a high-quality dielectric silicone grease or a Teflon-based spray lubricant directly to the seal/boot at the firewall typically stops the whistle immediately.
• Adjustment: Some owners found success by slightly loosening, realigning, and re-torquing the steering column mounting bolts to change the angle of the shaft through the seal, relieving the friction.
• The Dealer Solution: Because it's a known service issue, dealers have been replacing the lower steering shaft and the boot assembly under warranty. Since you were tracking this for a service visit, bringing it up to the techs as a suspected bulkhead seal friction issue will point them exactly where they need to go.

I talked to my mechanic that also works as a ford technician; he mention the lower steering shaft issues / fix. I did not think that would help but if they replace the boot that might help as mentioned.

Here is what the Ford computer says;

SSM 54763


2025-2026 Expedition/Navigator/F-Super Duty-Clicking or Creaking Noise When Turning The Steering Wheel - Built On Or Before 26-Mar-2026


Some 2025-2026 F-Super Duty vehicles built without lane departure warning (built with minor feature code LEAA) and 2025-2026 Expedition/Navigator vehicles built on or before 26-Mar-2026 may exhibit a clicking or creaking type noise when turning the steering wheel during low-speed maneuvers. To confirm a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS). If a vehicle exhibits this condition, use a chassis ears tool and place the microphone clamp on or near the universal joint yoke of the steering column upper shaft (below the column). Turn the steering wheel with the vehicle stationary to replicate the concern. If the same noise is clearly heard through the chassis ears at this location, replace the steering column upper shaft (base part number 3E751). Refer to Workshop Manual (WS), Section211-04. For claiming, use causal part 3751 and service labor operations 3676AUP and 1006D.

 

[Drbubbles84]

I talked to my mechanic that also works as a ford technician; he mention the lower steering shaft issues / fix. I did not think that would help but if they replace the boot that might help as mentioned.

Here is what the Ford computer says;

SSM 54763


2025-2026 Expedition/Navigator/F-Super Duty-Clicking or Creaking Noise When Turning The Steering Wheel - Built On Or Before 26-Mar-2026


Some 2025-2026 F-Super Duty vehicles built without lane departure warning (built with minor feature code LEAA) and 2025-2026 Expedition/Navigator vehicles built on or before 26-Mar-2026 may exhibit a clicking or creaking type noise when turning the steering wheel during low-speed maneuvers. To confirm a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS). If a vehicle exhibits this condition, use a chassis ears tool and place the microphone clamp on or near the universal joint yoke of the steering column upper shaft (below the column). Turn the steering wheel with the vehicle stationary to replicate the concern. If the same noise is clearly heard through the chassis ears at this location, replace the steering column upper shaft (base part number 3E751). Refer to Workshop Manual (WS), Section211-04. For claiming, use causal part 3751 and service labor operations 3676AUP and 1006D.

Yeah the problem is it happens at idle and turning the wheel actually makes it better! So weird.

 

[Xsboost]

I talked to my mechanic that also works as a ford technician; he mention the lower steering shaft issues / fix. I did not think that would help but if they replace the boot that might help as mentioned.

Here is what the Ford computer says;

SSM 54763


2025-2026 Expedition/Navigator/F-Super Duty-Clicking or Creaking Noise When Turning The Steering Wheel - Built On Or Before 26-Mar-2026


Some 2025-2026 F-Super Duty vehicles built without lane departure warning (built with minor feature code LEAA) and 2025-2026 Expedition/Navigator vehicles built on or before 26-Mar-2026 may exhibit a clicking or creaking type noise when turning the steering wheel during low-speed maneuvers. To confirm a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS). If a vehicle exhibits this condition, use a chassis ears tool and place the microphone clamp on or near the universal joint yoke of the steering column upper shaft (below the column). Turn the steering wheel with the vehicle stationary to replicate the concern. If the same noise is clearly heard through the chassis ears at this location, replace the steering column upper shaft (base part number 3E751). Refer to Workshop Manual (WS), Section211-04. For claiming, use causal part 3751 and service labor operations 3676AUP and 1006D.

I asked my dealer about this and my truck was built after that date so mine has the upgraded part and still making the noise. So this can't be the fix. But thanks for trying though.

 

[Xsboost]

Boys, I sent this thread and the video over to Whiteface Ford (YouTuber); hopefully he can solve the great mystery.

Mine is so annoying; I was trying to talk on the phone this morning and it’s just buzzing. I work in my truck so I want to get it fixed; reminds me of a old truck with a bad a/c.

Thanks, please let us know if you find out anything out.

 

[Mark_Lock_Holmes]

I asked my dealer about this and my truck was built after that date so mine has the upgraded part and still making the noise. So this can't be the fix. But thanks for trying though.

Good to know; I was wondering if anyone had this checked bc I had a feeling it might not be it; I have just been looking into every option.

I drove 2 different 2025 trucks yesterday and neither made any noise that I could hear. I turned a/c and music off.

 

[Aaron24F350]

Being at idle and turning the wheel makes it better or go away I'd be considering vacuum/pressure fluctuations in the power steering and or vibrations when not under load or clearances when the wheel is at 0° center for the shaft to where it enters the firewall.

I'm not a mechanic though, they have a process especially at the dealer service level. It's annoying but if you're just as persistent as that noise eventually they'll find and fix it.

 

[Xsboost]

Well I guess I have to be the guinea pig and figure this out. My trucks at the dealership.

 

[Mark_Lock_Holmes]

Well I guess I have to be the guinea pig and figure this out. My trucks at the dealership.

Any update?

 

[Xsboost]

Parts are ordered replacing all three parts of the steering assist.

 

[Drbubbles84]

Parts are ordered replacing all three parts of the steering assist.

Let us know how it goes

 

[Xsboost]

Let us know how it goes

Here's the outcome of the steering noise. Truck was at the dealership for over 50 days, replaced steering column, electric power steering motor, and power steering pump. Nothing fixed the noise. The last engineering team that looked at it said that other 26's were making a similar noise. I verified this with 8 other trucks and seems that all 2026 superdutys all have same problem just people don't know it's not normal or they are not very observant. Checked 2024's and 2025's and for sure the noise is not there. So ford is buying back the truck and hopefully this issue is fixed for the 27's.

 

[HeavyAssault]

Not sure how you feel about it at this point. Are you getting a new truck or something else??

 

[The Evil Twin]

Wow. You are going through a buy back over it? That sucks.
I can positively say that not all 26s do it. I listened to my truck early on in the thread, and again this morning. Definitely no whistle. If I have the window down in the garage I can hear the hydraulic pump groan a little. Nothing in the cab.

 

[Xsboost]

Not sure how you feel about it at this point. Are you getting a new truck or something else??

Getting a 2027 same truck as what I have. Hopefully they fixed the issue.

 

[Xsboost]

Wow. You are going through a buy back over it? That sucks.
I can positively say that not all 26s do it. I listened to my truck early on in the thread, and again this morning. Definitely no whistle. If I have the window down in the garage I can hear the hydraulic pump groan a little. Nothing in the cab.

Well maybe they changed something through the build year because the other new 8 trucks I tested on the lot a few weeks ago all had a similar sound. The service manager has a 2025 and I tested his and it was perfect no sound at all. I'll just try a 27 I guess.

 

[NightForceFan]

I have had my 26 since 9/12/25. No whistle. Sorry you had to to through all that trouble and hope your 2027 is better.