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S8 transmission recode - Success! :-)

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Old 01-18-2009, 07:56 AM   #1
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Default S8 transmission recode - Success! :-)

Just found the time to play around with a little transmission coding today. I wanted to see if I could get a transmission that didn't shift in manual, like they used to be.

I wanted to try Mark'sA8L suggested coding of 00032 or 00022, but my car didn't accept any of these.

I then tried 00131, which it accepted.

And behold, it now behaved just like my old A8 sport! :-)
- No upshifts at redline, just hits the limiter (even in 1st).
- No downshifts at kickdown
- Only automatic downshift at very low rpm, actual rpm depending on gear. 5th at ~1000, 4th at ~900

The behaviour is the same if manual mode is selected by tip buttons or by gear selector. No difference between "D" and "S" mode in this respect either, but "Manual S" mode seems quicker than "Manual D", like before. Selector in tiptronic gate acts just like "Manual S" when it comes to shifting time.

Just for the fun of it, I recoded to 00121 also. Didn't notice any difference from 00131, but it came four inches of snow today, so road testing was somewhat limited by slow non-quattro vehicles.

The soft code in my car was 00101 before I changed anything. After googling a bit, I believe this means:
xx1xx: DSP engaged
xxx0x: New model tiptronic shift strategy
xxxx1: Region: Rest of world, quattro

In other words, changing the xxxYx toggles between old and new "tiptronic shift strategy"
xxx0x and xxx1x is the new behaviour (semi-automatic tip mode)
xxx2x and xxx3x is the old behavior (manual tip mode)

This link confirms that this is the case for the A4:
Ross-Tech article
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Old 01-18-2009, 08:55 AM   #2
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Default The advise for xxxx2 is for USA cars. Rest of world, like yours, need xxxx1 (quattro only)

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Old 01-18-2009, 09:39 AM   #3
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Default Do you know what the difference is? Could a US car be coded 00131?

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Old 01-18-2009, 02:03 PM   #4
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Default Only with a euro TMC i guess. But why would you want to? I makes no difference according to my info.

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Old 12-12-2010, 08:56 AM   #5
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Just to add to this old thread, I tried a Tranny recode on my '98 S8. Stock coding is also 00101. It would not take 121, 131, 122, 132, even tried all them with a leading 1 (ie 01101) based on a tip elsewhere.

The only code that would stick was 00111, which is another of the "new shift strategy" type. Gave it a quick drive and the Thump when slowing to a stop then punching the accelerator was nearly eliminated. Also holds gears longer. Perhaps this is a sports mode?
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Old 12-13-2010, 12:45 AM   #6
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You could just get a software map on the gearbox tcu
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Old 02-16-2011, 04:10 PM   #7
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Default plain old A8 codes?

should any of these codes work on my 97 A8 ? 4.2 Q (non S8)
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Old 07-23-2013, 06:05 AM   #8
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Quote:
Originally Posted by KjellA View Post
Just for the fun of it, I recoded to 00121 also. Didn't notice any difference from 00131, but it came four inches of snow today, so road testing was somewhat limited by slow non-quattro vehicles.
Anyone know the actual difference between 00121 and 00131? I've been wanting to try something different on my '02 S8. I'm assuming my coding is 00101 currently. Any insight is greatly appreciated.
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Old 07-23-2013, 06:08 AM   #9
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Quote:
Originally Posted by mattsimis View Post
Just to add to this old thread, I tried a Tranny recode on my '98 S8. Stock coding is also 00101. It would not take 121, 131, 122, 132, even tried all them with a leading 1 (ie 01101) based on a tip elsewhere.

The only code that would stick was 00111, which is another of the "new shift strategy" type. Gave it a quick drive and the Thump when slowing to a stop then punching the accelerator was nearly eliminated. Also holds gears longer. Perhaps this is a sports mode?
Or maybe even 00111?
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Old 07-23-2013, 08:05 AM   #10
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Anyone know the actual difference between 00121 and 00131? I've been wanting to try something different on my '02 S8. I'm assuming my coding is 00101 currently. Any insight is greatly appreciated.
Codes ending in "1" are for Euro models, as far as I know...US codes end in "2". Look down at the codes for 00-03 A8's here >>

http://www.audipages.com/Tech_Articl...nsmission.html

They should be the same as your S8 code choices but with a 1 added as the 2nd digit. Your stock code is probably either 01002 or 01012. Changing to 01032 will give you sport coding (not "sport mode", like shifter) and full control of 1st gear in tip.

Read over this thread, too...another code (00132?) might give you tip-on-demand at the wheel without shifter positioned...maybe(?) >>>>

http://forums.quattroworld.com/a8/msgs/80892.phtml

My '01 A8 is set to 00032, which gives me sport coding and full control of 1st gear in tip...hold 1st to redline (or user shift) and can be downshifted to 1st at any speed under it's redline, regardless of throttle input...HUGE difference over stock coding...awakens a V8 monster at lower speeds (up to 40mph in an A8...less, of course, with S8 gearing).
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Old 07-23-2013, 08:33 AM   #11
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Thanks silverd2; I read that first thread last night (and probably several times in the past) and my inkling was that the S8 would not be 00032. I just never have much luck finding S8 specific information (you probably recall my brake job/torque questions). I'll pull my stock code tonight to see what code I'm starting from.

Tip on demand? Now that would be a nice feature! I tend to move between D and tip, and D & S very often, usually depending on traffic scenario. My biggest gripe is a clunk from 3 to 2 or 2 to 1 while slowing down.

Does "sport coding" render the "S" shifter position useless?

I must confess that I used VCDS Lite for the first time over the weekend. I've only ever had one CEL and turned out to be a loose gas cap. Well last week I got the small evap leak code 16826/P0442. As my non-VAG specific handheld scanner (actually stated "small evap leak" after scan) was on loan to a friend, I ordered a $9 Amazon cable and went in to have a look. I replaced all the braided vacuum hoses, cleared fault and went for a 20 minute drive. Stopped, restarted, and still no code. So far so good. After that I recalled a post about recoding central locking such that windows could be rolled up/down with key fob, one-touch unlock, automatic locking @ 15mph, etc. That worked like a charm, so that got me thinking (again) about a tranny recode.
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Old 07-23-2013, 09:20 AM   #12
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Originally Posted by S8ilver View Post

Does "sport coding" render the "S" shifter position useless?
No, not at all...I was just differentiating between the 2 terms. "Sport mode" ("S"on the shifter) should always work the same.

"Sport coding" just alters the shift behavior a little in "D"...slightly more likely to downshift, slightly higher rpm before shift (depending on throttle input), etc...not a huge difference, but a little more lively.
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Old 07-24-2013, 05:35 AM   #13
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I have the stock coding on my S8.

It seems pretty easy to do. "S8ilver" Post what code you show for your stock coding and what new code you put in.

Would love to know if it makes any difference for you in "D".

I have an '01 and dont have the "S" on shifter box.

Let me know what you find! Thanks
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Old 07-24-2013, 06:14 AM   #14
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Quote:
Originally Posted by '01-S8 View Post
I have the stock coding on my S8.

It seems pretty easy to do. "S8ilver" Post what code you show for your stock coding and what new code you put in.

Would love to know if it makes any difference for you in "D".

I have an '01 and dont have the "S" on shifter box.

Let me know what you find! Thanks
I'd recommend coding yours to 01032...if for no other reason, to have total control over 1st gear in tip mode...good fun, when you need it.
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Old 07-25-2013, 05:12 AM   #15
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Quote:
Originally Posted by '01-S8 View Post
I have the stock coding on my S8.

It seems pretty easy to do. "S8ilver" Post what code you show for your stock coding and what new code you put in.

Would love to know if it makes any difference for you in "D".

I have an '01 and dont have the "S" on shifter box.

Let me know what you find! Thanks
I haven't put a new code in yet, but stock coding is 01102. I can't find any documentation regarding this code for the S8. I had to do a double take, but yes, 01102.

A6/S6:
http://forums.audiworld.com/archive/...t-2838345.html

Last edited by S8ilver; 07-25-2013 at 05:15 AM.
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Old 07-25-2013, 07:05 AM   #16
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Quote:
Originally Posted by S8ilver View Post
I haven't put a new code in yet, but stock coding is 01102. I can't find any documentation regarding this code for the S8. I had to do a double take, but yes, 01102.

A6/S6:
http://forums.audiworld.com/archive/...t-2838345.html
That's a new one on me as well. As with many things, D2 S8-specific info can be hard to find.
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Old 07-25-2013, 11:17 AM   #17
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Quote:
Originally Posted by silverd2 View Post
That's a new one on me as well. As with many things, D2 S8-specific info can be hard to find.
At least everything is in English in the S8! My previous car (E34 Euro-spec M5) was all in German. Owner's manual, OBC, dash display... even the speedo was only in km/h with no sub mph dial.

However, I can now confirm that sport coding for S8 (2002 at least) is 01132. The clunk I had slowing down is virtually gone, and full control of 1st gear in Tip works as advertised. Also, D seems more responsive than before...later shifts when moderately accelerating (doesn't shift quickly and then leave me without power if I feel like gunning it, which is often).

Thanks to everyone for getting me on the right track.
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Old 07-25-2013, 02:06 PM   #18
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Originally Posted by S8ilver View Post
However, I can now confirm that sport coding for S8 (2002 at least) is 01132. The clunk I had slowing down is virtually gone, and full control of 1st gear in Tip works as advertised. Also, D seems more responsive than before...later shifts when moderately accelerating (doesn't shift quickly and then leave me without power if I feel like gunning it, which is often).

That's an interesting find on the transmission coding. That leaves me to believe it could be a coding issue in the transmission software, that is causing D2 transmissions to possible fail prematurely and at a minimum, the reason for the hard shifts most of us seem to have periodically.

This transmission coding problem seems to be an issues with other Audi model owners that are posting on AudiWorld, as well.

S8ilver - What device did you use to recode your transmission?
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Old 07-25-2013, 02:59 PM   #19
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Originally Posted by 2001 S8 View Post
S8ilver - What device did you use to recode your transmission?
This cable:
OBD2 OBD II Diagnostic USB Cable For KKL409.1 VAG-COM 409 : Amazon.com : Automotive OBD2 OBD II Diagnostic USB Cable For KKL409.1 VAG-COM 409 : Amazon.com : Automotive

with this software:
http://www.ross-tech.com/vcds-lite/download/index.html

and this procedure:
http://www.ross-tech.com/vcds/tour/main_screen.html

Select Control Module
02-Auto Trans
Coding-07
Entered 01132 where 01102 lived
Clicked "Do it"

Done

Wouldn't it be terrible if the stock coding is what causes premature failures?! I wonder how many of the high mileage D2 transmissions were recoded vs. left on stock settings.

Last edited by S8ilver; 07-25-2013 at 03:08 PM.
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Old 07-27-2013, 05:46 AM   #20
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Thanks for the link.

I'm a PC free family so I'll have to see if my mechanic will update the code number. I'm taking her in next Monday for a complete timing belt service so hopefully he'll be able to do the code at that time.
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Old 07-27-2013, 05:46 AM
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