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2011 GT500 TSB - Steering update

Started by Wingrider , Aug 17 2010 07:49 AM

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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

View PostWingrider, on 17 August 2010 - 07:49 AM, said:

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.
__________________

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

View PostEzareth, on 17 August 2010 - 09:11 AM, said:

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

View Postbpmurr, on 17 August 2010 - 11:09 AM, said:

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

View PostTorched10, on 17 August 2010 - 11:21 AM, said:

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 ONLINE   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.
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#10 OFFLINE   Colleton

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Posted 18 August 2010 - 05:16 PM

View Postgr8snkbite, on 17 August 2010 - 05:10 PM, said:

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.

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#13 ONLINE   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

View PostWingrider, on 18 August 2010 - 06:15 PM, said:

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

View Poststeve-o-500, on 19 August 2010 - 11:38 AM, said:

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

View PostSuperRifle05, on 19 August 2010 - 11:53 AM, said:

: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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