Ddillenger, I respectfully disagree with you in two aspects:

This site contains a fairly comprehensive breakdown of the Audi Year/Immo versions: http://wiki.ross-tech.com/wiki/index.php/Immobilizer

A) 2000 Audi A6 and possibly other models in the NAR (North America Region) had Immobilzer II. Again, that is a "Model Year 2000".
1999 and before NAR Audi's did not have Immobilizer ( I understand that there are a few exceptions that have to do with import quotas and modifying ROW Audis to NAR, but they are few.     

For example:  I own a 2000 Audi A6, 2.7T and it most certainly has Immo II. I was able to verify this with VCDS.  My build date is 3/2000. When I log into my Immobilizer module ( in cluster) I have a single, 14 digit/character Immo Identity.  This is, without any doubt, an Immo II car. It Rolled off the assembly line in Germany with the very same Immo II Identity that it has today.  My 2000 Audi A6 even has the Immo light on the cluster. I saw it for the first time when I tried to flash a "4B0907551L" file to my ECU. MY car would start, run for 3-4 seconds, and shut down. the Immo light lit up beautifully!!



B) Many 2000 and 2001 NAR Audi's Have Immo II,    ( I did err when I said that it was Immo I )

C) My 2001 Audi Allroad, 2.7T has Immo III, while as I said earlier, many 2001 Audi 2.7T A6's had Immo II   ( I understand that may not be true for the B5/S4 2.7T )

To test for which version of Immobilizer one has. Simply log on VCDS, address 25. If there is a "14 digit/charecter Immo ID"  ( such as " Immo-ID VWZ7Z0W0765897 ), then it is an Immo II.
     
If address 25 and in the EXTRA field, "You should see BOTH a 14 digit Immobilizer ID number and ALSO a 17 digit VIN number in the Extra fields like this: WVZKB58001H231169 VWZ7Z0W0648696".   This indicates that it has Immo III

Ddillinger,

Please site the reference that you use to come to such a conclusion.   Do you have one?

After all, there are members and future members of this forum that may need to know accurate information on the subject of Immobilizer, no ?     I guess that I was under the false impression that this site is, in part at least, about the sharing of accurate information in all areas of tuning? 

Your categorical dismissal of my referenced Ross-Tech page and my empirical experience, by stating that you are "correct", regardless of what evidence I post to the contrary and without siting a single reference is not only arrogant, but does NOTHING to advance the stated goal of this website.

I Own a 2000 Audi A6, 2.7T, 6 spd and said vehicle has IMMO II.   Refer to my empirical experience above ( The post that you dismissed out of hand ).

It's curious, Ddlillenger, that you do not remember me. Think and it will come to you!   I've always treated you with respect, regardless of whether, or not, I've agreed with you.   

Please site you reference/s to back up your claim that """2000 A6 does not have immobilizer in North America.
2001 A6 is immobilizer 3."""

He may be nice, but he is most definitely wrong and he contradicts himself.   He sites the same Ross Tech Wiki Page that I referenced to back up my statement that 2000 Audi A6's have Immo II, in his post here: http://nefariousmotorsports.com/forum/index.php?topic=2973.0title=.

Now follow Ddillingers posted link to the Ross Tech Wiki where it clearly states that "2000 Audi A6's have Immo II"

I mean it's ok to be wrong. Accept that you are wrong, stand corrected and move on.   But to de disrespectful and not site a single source to back up your incorrect assertion is not what I believe this forum is all about.   Arrogance has its place, but I don't think it's on this forum and certainly not aiding in helping others grow in understanding and knowledge of tuning. The stated goal of this site!

Soap box is now put away!!

What about the BEL engine Allroad? It has immo 3. and its a 2.7t

I poke bears, but only when there's a teenager needing disposal Right DoubleD?..

Shittt, even when I'm NOT being nice I'm just joking around

No worries, I wasn't trying to give you a black eye. Sometimes I reply quickly just to answer a question instead of going into details.

What is your ecu number? Auto or manual? Given that you have the top connector and a 00 build date, It's something to think about.