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2011 GT500 TSB - Steering update


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#1 OFFLINE   Wingrider

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Posted 17 August 2010 - 07:49 AM

http://www.s197forum...ead.php?t=40647

TSB 10-16-4

5.4L - STEERING SHUDDER/NIBBLE/PULL/DRIFT - BUILT ON OR BEFORE 8/2/2010
Publication Date: August 13, 2010
FORD:
2011 Mustang

ISSUE:

Some 2011 Mustang Shelby GT500 vehicles equipped with a 5.4L engine and built on or before 8/2/2010 may exhibit steering wheel shudder under heavy braking, steering wheel nibble, or a drift/pull condition.
ACTION:

Reprogram the Electric Power Assisted Steering (EPAS) Power Steering Control Module (PSCM) module to the latest calibration using IDS release 67.06 and higher. This new calibration is not included in the VCM 2010.5 DVD. Calibration files may also be obtained at www.motorcraft.com.

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
__________________

#2 OFFLINE   Ezareth

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Posted 17 August 2010 - 09:11 AM

http://www.s197forum.com/forum/showthread.php?t=40647

TSB 10-16-4

5.4L - STEERING SHUDDER/NIBBLE/PULL/DRIFT - BUILT ON OR BEFORE 8/2/2010
Publication Date: August 13, 2010
FORD:
2011 Mustang

ISSUE:

Some 2011 Mustang Shelby GT500 vehicles equipped with a 5.4L engine and built on or before 8/2/2010 may exhibit steering wheel shudder under heavy braking, steering wheel nibble, or a drift/pull condition.
ACTION:

Reprogram the Electric Power Assisted Steering (EPAS) Power Steering Control Module (PSCM) module to the latest calibration using IDS release 67.06 and higher. This new calibration is not included in the VCM 2010.5 DVD. Calibration files may also be obtained at www.motorcraft.com.

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
__________________


Odd, I haven't experienced this at all on mine. Will keep in mind, thanks.
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#3 OFFLINE   Icebourg

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Posted 17 August 2010 - 10:30 AM

Odd, I haven't experienced this at all on mine. Will keep in mind, thanks.



Same here. Thanks for the info!!!!!
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#4 OFFLINE   bpmurr

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Posted 17 August 2010 - 11:09 AM

Makes me glad I have the old style. Doing firmware updates to my steering seems a little scary.
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#5 OFFLINE   Torched10

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Posted 17 August 2010 - 11:21 AM

i havent noticed it,does it happen at any speed,or gear?

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#6 OFFLINE   ASO544

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Posted 17 August 2010 - 11:22 AM

Makes me glad I have the old style. Doing firmware updates to my steering seems a little scary.


Computers run everything else on our cars.....why not the steering (assist)!!! Plus the EPAS drives amazing!!!! I ran mine on our local road course and was amazed at how well it handled and steered.
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#7 OFFLINE   Ezareth

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Posted 17 August 2010 - 03:48 PM

i havent noticed it,does it happen at any speed,or gear?


Fortunately it only appears to be an issue with the '11 EPAS equipped GT500s Bob.
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#8 OFFLINE   gr8snkbite

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Posted 17 August 2010 - 05:10 PM

Good info...thx. I've noticed this infrequently driving the roads, and attributed it to the road contours. Time to get her checked out.
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#9 OFFLINE   Icebourg

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Posted 18 August 2010 - 05:11 PM

I called today and was told that the fix takes about 20 mins or so. Its a download for the computer.
2011 BLK/BLK F150, FX4, Ecoboost, Extra Cab, ( 400 HP....Daily Driver )
2011 BLK/BLK Shelby GT500 Perf. Pack, ( 585 HP SOLD!! )
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#10 OFFLINE   Colleton

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Posted 18 August 2010 - 05:16 PM

Good info...thx. I've noticed this infrequently driving the roads, and attributed it to the road contours. Time to get her checked out.


Same here.
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#11 OFFLINE   ASO544

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Posted 18 August 2010 - 05:24 PM

Having mine done Friday
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#12 OFFLINE   ram_g

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Posted 18 August 2010 - 05:43 PM

I don't have any inside information in the least, but putting on my logical engineering hat it seems to me that this re-calibration must involve a reduction of the feedback sensitivity or feedback "gain" that the system transmits back to the steering wheel from small perturbations encountered by the front wheels and suspension.

My car doesn't have the shudder or "nibble" but does have a small drift - mostly to the left but sometimes to the right - it seems quite sensitive to road conditions. For now I'm going to leave well alone - I actually like the sensitivity and the feedback that I get through the steering wheel.

For those that get this done - please post back as to whether you experience any loss of steering sensitivity or "deadband" around the center point.

Ram G.
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#13 OFFLINE   gr8snkbite

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Posted 18 August 2010 - 05:45 PM

here's the TSB for those needing it...

Attached Files


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#14 OFFLINE   Wingrider

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Posted 18 August 2010 - 06:15 PM

I am happy I was able to contribute to the forum!

The info I've learned here in the last couple of months has been amazing.


-Wingrider

#15 OFFLINE   FireDragon

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Posted 18 August 2010 - 07:04 PM

I am happy I was able to contribute to the forum!

The info I've learned here in the last couple of months has been amazing.


-Wingrider


Thanks for the heads up! I do notice a slight nibble on the steering and thought that it was just a little oversensitive. I'll schedule mine with the first oil change.

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#16 OFFLINE   steve-o-500

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Posted 19 August 2010 - 11:38 AM

I have had this issue but didn't think that much of it. Thought it may be the tires or something. I spoke to our Ford dealer and have an appointment tomorrow. My concern here is they said they will need the car for the day to "diagnose" the issue.
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#17 OFFLINE   JonathanE

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Posted 19 August 2010 - 11:53 AM

I have had this issue but didn't think that much of it. Thought it may be the tires or something. I spoke to our Ford dealer and have an appointment tomorrow. My concern here is they said they will need the car for the day to "diagnose" the issue.


:headscratch: "diagnose" I would think all you would need to do is hook up the computer download the software and call it a day since it is a TSB...could be wrong though

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#18 OFFLINE   steve-o-500

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Posted 19 August 2010 - 06:39 PM

:headscratch: "diagnose" I would think all you would need to do is hook up the computer download the software and call it a day since it is a TSB...could be wrong though


see now that would make sense. I have canceled my appointment until I can speak directly to the service manager. The service person I spoke to wanted to verify tire pressures, and balance the tires before they do anything.
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#19 OFFLINE   ASO544

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Posted 21 August 2010 - 12:47 PM

I had mine done Friday. I can't tell a difference while driving but it no longer has the nibble. Be careful as my dealer was about to tear my front end apart stating he had to replace some springs. i tried to explain to him it was a TSB and gave him the number and was finally got on the same page. you have to watch the old know it all service managers!!!!

Edited by ASO544, 21 August 2010 - 09:18 PM.

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#20 OFFLINE   LynnF1

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Posted 23 August 2010 - 08:27 AM

Thanks for the thread - took delivery of my 2011 w/ SVTPP on Friday, made sure to have them check that this was done!

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(By the way, the 2011 is much more responsive than the 2010 at low-medium revs, is quieter inside, and rides a littl worse - but I couldn't care less about that - the car is wonderful!)

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#21 OFFLINE   ASO544

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Posted 23 August 2010 - 10:18 AM

I would contribute the ride to the PP .....well worth the trade off.
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#22 OFFLINE   jdaallen

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Posted 23 August 2010 - 07:06 PM

I don't have any inside information in the least, but putting on my logical engineering hat it seems to me that this re-calibration must involve a reduction of the feedback sensitivity or feedback "gain" that the system transmits back to the steering wheel from small perturbations encountered by the front wheels and suspension.

My car doesn't have the shudder or "nibble" but does have a small drift - mostly to the left but sometimes to the right - it seems quite sensitive to road conditions. For now I'm going to leave well alone - I actually like the sensitivity and the feedback that I get through the steering wheel.

For those that get this done - please post back as to whether you experience any loss of steering sensitivity or "deadband" around the center point.

Ram G.
2011 Kona Blue SVTPP, electronics, stripe delete, daily driver


I have the same "drift" problem. I thought it was the road conditions but maybe not. Will get it checked when we get back home in a couple of weeks. I always thought Colorado's roads were rough but this trip back east has change my mind completely. I have never driven such FU roads in my life. I don't know how these SVTPP low profile tires have held together (knock on wood Posted Image we only have 3000 miles to go yet) but they must be tuff!!!!
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#23 OFFLINE   gr8snkbite

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Posted 25 August 2010 - 06:26 PM

took the car in today for another problem, and while there had the TSB performed. Car always drifted to the left, whether driving or braking, now after the TSB, drives straight as an arrow and doesnt pull anymore.... :happy feet:
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#24 OFFLINE   Colleton

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Posted 26 August 2010 - 05:54 AM

Very cool, great to hear! Mine is going in tomorrow. Hope to have the same result.
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#25 OFFLINE   gotoparker

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Posted 09 October 2010 - 04:43 PM

Thank you for this post. Ran my 2011 gt500 svt at Sebring today and twice or three time a lap while turning left with brake the wheel went pretty crazy. I had noticed it in the rain when I first got the car and while braking and turning in a local spot clear of people. I thought it was a bad rotar and was thinking about aftermarkets, this post sure changed my mind. I give the car credit for the feed back it gave me today running with Z06's and gt3's(with no shake I felt like Mario) it was just that darn shake that had me and another driver wondering what was up. I am having the fix done next week and running again on Nov 6th at the track. I hope the great feel and feedback that had no shake in most of the corners is still there after this fix. I wonder about this new steering and how it is going to hold up under track conditions. I will rag her hard and let you all know what she does. Tires were WOW after a good warm up. Throw these cars as hard as you want with the new goodyear supercar treads. No one at the track today had anything negative to say about my car and that is rare. For a live rear, this car could be the best ever produced, that is if they get the steering fixed.

#26 OFFLINE   Reapyr

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Posted 09 October 2010 - 04:58 PM

I experienced a drift a couple weeks ago but shook it off as a crappy road. Two days ago though, I had to slam on my brake cause of an old person pulling out of a plaza (good ole oldfarts in florida). Right as I slam on the brakes the steering wheel just felt like jello, I tried turning the wheel to make sure I could clear the car ahead of me...cause if the wheel just turned to jello how could I be sure the brakes were going to actually stop.

Guess in all my free time Ill get to a dealer an have the flash done now.
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#27 OFFLINE   jdaallen

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Posted 09 October 2010 - 08:41 PM

Took mine in last week. I drove in to the dealer without an appointment and wasn't there more than 30 minutes. The reprogram diffidently made a difference.
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#28 OFFLINE   steve-o-500

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Posted 10 October 2010 - 06:10 AM

Took mine in last week. I drove in to the dealer without an appointment and wasn't there more than 30 minutes. The reprogram diffidently made a difference.


I am going to the same dealer next week. After some spirited mountain driving, the steering wheel was trying to jump out of my hands....not a good feeling.
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#29 OFFLINE   prozzi20

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Posted 10 October 2010 - 12:45 PM

I was at my dealer and told them about the TSB and they told me its not a recall so we don't automatically do it. I asked if they could and they said the same thing and never did it. Is this normal?

#30 OFFLINE   jdaallen

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Posted 10 October 2010 - 02:47 PM

I was at my dealer and told them about the TSB and they told me its not a recall so we don't automatically do it. I asked if they could and they said the same thing and never did it. Is this normal?


Find another dealer. Even if you talked him into doing the Reprogram, I wouldn't trust him for lying to you. A TSB is not a "recall" by definition however it is something the dealer is to repair free of charge if the vehicle comes in. Read the warranty provisions in the actual TSB here: http://www.teamshelb...attach_id=59453
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