S4 (B8 Platform) Discussion Discussion forum for the B8 Audi S4 produced from 2009-2016

dynamic steering

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Old Jul 24, 2011 | 08:45 PM
  #1  
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Default dynamic steering

Europe has dynamic steering as a stand alone option. This means that although the function is not activated when you order the sports diff without ADS in North America the software for this function is in the car's computer.

There is a thread at Audizine on VAG-COM codes:

http://www.audizine.com/forum/showth...M-codes/page12

Someone figured out how to activate the system but from what I can tell the code they used DEactivated the servo steering. They describe having the steering effort at low speed to be so heavy that they end up turning off the dynamic steering.

OK you techies: Find out how we can activate dynamic steering while the servo steering remains active as well. Good luck.
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Old Jul 25, 2011 | 07:25 AM
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Originally Posted by gmermel
Europe has dynamic steering as a stand alone option. This means that although the function is not activated when you order the sports diff without ADS in North America the software for this function is in the car's computer.

There is a thread at Audizine on VAG-COM codes:

http://www.audizine.com/forum/showth...M-codes/page12

Someone figured out how to activate the system but from what I can tell the code they used DEactivated the servo steering. They describe having the steering effort at low speed to be so heavy that they end up turning off the dynamic steering.

OK you techies: Find out how we can activate dynamic steering while the servo steering remains active as well. Good luck.
Are you talking about this comment?
tightening steering

go to 09-Cent. Elect.

go to Coding - 07 and change byte 7 from 01 to 00
Enabling dynamic steering via VCDS has been discussed on the B8 A4 and Q5 boards (along with dynamic engine/throttle response) as part of the ADS options.

You can read up on David's DIY at audienthusiasts.com but some of his coding is a bit different. Byte 8 is a bit confusing - pun intended. =)

Anyway, if you are familiar with VCDS, the following post should quickly help you enable ADS options including steering:
https://www.audiworld.com/forums/sho...&postcount=258
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Old Jul 25, 2011 | 08:24 AM
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Originally Posted by gmermel
Europe has dynamic steering as a stand alone option. This means that although the function is not activated when you order the sports diff without ADS in North America the software for this function is in the car's computer.

There is a thread at Audizine on VAG-COM codes:

http://www.audizine.com/forum/showth...M-codes/page12

Someone figured out how to activate the system but from what I can tell the code they used DEactivated the servo steering. They describe having the steering effort at low speed to be so heavy that they end up turning off the dynamic steering.

OK you techies: Find out how we can activate dynamic steering while the servo steering remains active as well. Good luck.

I'm wondering if you can clarify a bit more.

First off you mention "the function is not activated when you order the sports diff without ADS in North America the software for this function is in the car's computer." What do you mean? I thought with the sports diff you got the ADS-Lite package which includes the ADS control panel and the "dynamic" setting covered steering, throttle, gearbox(S-Tronic), and sports diff... and of course excludes variable ratio steering and suspension as they are only on full ADS equipped cars.

Second isn't this VCDS (VAG-COM) mod just basically disabling power steering assist. I mean in reality that is all the ADS-Lite "Steering" setting is doing anyway (varying the amount of power assist) but it sound as if he just shut it off altogether.
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Old Jul 25, 2011 | 11:06 AM
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Originally Posted by gk1
I'm wondering if you can clarify a bit more.
but it sound as if he just shut it off altogether.
Precisely my point: the coding he used successfully activated the steering ratio function. several people made the change. All successfully activated the functionality. Most described that at low speed the steering ratio was so low and heavy they disabled the function.

So the ratio function was activate but apparently the servo was disabled.

My question, then, is can you activate the servo independently so it still works when the dynamic steering is turned on


It has to be in there because the feature is available in Europe as a stand alone option with the sd.

I will post this in the vag-
Com forum too.....

Last edited by gmermel; Jul 25, 2011 at 11:13 AM.
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Old Jul 25, 2011 | 11:58 AM
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Interesting. I thought there was entirely different hardware with Dynamic Steering vs standard Servotronic
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Old Jul 25, 2011 | 12:43 PM
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Originally Posted by helix139
Interesting. I thought there was entirely different hardware with Dynamic Steering vs standard Servotronic
It is different, doing this coding just lowers the assist the PS pump gives, tightening the steering, it doesn't affect the ratio.
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Old Jul 25, 2011 | 01:11 PM
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Originally Posted by NWS4Guy
It is different, doing this coding just lowers the assist the PS pump gives, tightening the steering, it doesn't affect the ratio.
So it is a hardware issue? I can't see how hardware could change the ratio unless it is accomplished by gearing changes that occur within the mechanism.
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Old Jul 25, 2011 | 01:36 PM
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Originally Posted by gmermel
So it is a hardware issue? I can't see how hardware could change the ratio unless it is accomplished by gearing changes that occur within the mechanism.
Yes, there is a special gearbox between the steering wheel and the front wheels, you can see how it works here:

http://www.youtube.com/watch?v=Ge7huVZANC4
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Old Jul 25, 2011 | 02:03 PM
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Exactly. It does appear that the introduction of the sports differential with ADS-Lite has made a bit of confusion since it uses they exact same interface and terminology for the steering "enhancements".

On full ADS you get the variable power assist AND variable RATIO.

On ADS-Lite (i.e. sports diff only) you get just the variable power assist since the variable ratio hardware is not present. (I won't speak to the effects of the sports diff on the "steering" setting since I don't know them.)

What would be interesting would be if on say an A4 without full ADS you could enable the MMI screen for ADS-Lite effects for steering effort, throttle, tiptronic. Perhaps that is what they are referring to in the VCDS (VAG-COM) mods in the other threads?
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Old Jul 25, 2011 | 02:34 PM
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Originally Posted by gk1

What would be interesting would be if on say an A4 without full ADS you could enable the MMI screen for ADS-Lite effects for steering effort, throttle, tiptronic. Perhaps that is what they are referring to in the VCDS (VAG-COM) mods in the other threads?
Yes, this is exactly what the VCDS changes do for someone without the Sport Diff or ADS. The coding is still there, but without buttons you can only change what the setup is defaulted to everytime you drive the car. You can make changes to an A4/5 or S4/5 that I know for certain works, where it will make the steering tighter or lighter, and the throttle response/tip in more or less aggressive depending on if you change the bits to mirror Dynamic or Comfort (Auto is how it is otherwise).
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