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Author Topic: Any way to unlock used ecu to work on another car? 05 audi a6  (Read 12706 times)
efrain3282
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« on: October 22, 2014, 09:14:00 AM »

How are you guys and gals doing, so, long story short, at my shop we have a 2005 audi a6 with what seems like a possible bad ecu due to dtc P2404 no going away, seems like ground is not good at pin 24 I believe the tech said. I have a junk 05 a6 here that i would like to use as a donor car for the ecu. I tried installing it but of course immo disabled any starting attempts. I read on other audi forums that this would be the place to come for help with this and possible skc's...is this possible or am I screwed? Thanks in advance for taking the time to answer me.
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ddillenger
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« Reply #1 on: October 22, 2014, 09:38:16 AM »

If it's a 4.2, no problem. If it's a 3.2 with a simos6 ecu, you're semi boned.
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efrain3282
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« Reply #2 on: October 22, 2014, 09:49:50 AM »

If it's a 4.2, no problem. If it's a 3.2 with a simos6 ecu, you're semi boned.

haha, awesome. Ive got a 3.2l with a simos6.22... damn. Well, any suggestions or just punt the car to the dealer and shell out the $2,000?
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ddillenger
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« Reply #3 on: October 22, 2014, 09:50:31 AM »

Do you have the login for the spare ecu?
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efrain3282
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« Reply #4 on: October 22, 2014, 09:56:27 AM »

 Sad nope. I do have both vehicles here, a vag and vcds and the determination to make this work!
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efrain3282
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« Reply #5 on: October 22, 2014, 11:40:06 AM »

Do you have the login for the spare ecu?
ddillenger84?.... where'd u go?! awww...... Cry Anybody?!
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ddillenger
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« Reply #6 on: October 22, 2014, 12:09:20 PM »

What generation immobilizer is it?

With both clusters and the right tools you can make it work.
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efrain3282
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« Reply #7 on: October 22, 2014, 12:51:20 PM »

What generation immobilizer is it?

With both clusters and the right tools you can make it work.
Haha Grin now thats what i want to hear! Now, how do I prceed? Smiley
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efrain3282
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« Reply #8 on: October 22, 2014, 12:52:05 PM »

im pretty sure its 4th gen, has challenge.

« Last Edit: October 22, 2014, 12:54:02 PM by efrain3282 » Logged
ddillenger
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« Reply #9 on: October 22, 2014, 02:55:29 PM »

You are not going to like the answer. You're going to need real tools, not clones. I think vagtacho can do it. Maybe f1torrents will chime in.
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k0mpresd
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« Reply #10 on: October 22, 2014, 03:07:11 PM »

if its 4th gen c/r then you are screwed. avdi would do it probably though.
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efrain3282
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« Reply #11 on: October 22, 2014, 03:21:28 PM »

You are not going to like the answer. You're going to need real tools, not clones. I think vagtacho can do it. Maybe f1torrents will chime in.
Huh ... sooo are u saying vcds and vag from ross tech will not work? comes with hex+can connector.
« Last Edit: October 22, 2014, 03:31:51 PM by efrain3282 » Logged
ddillenger
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« Reply #12 on: October 22, 2014, 03:33:36 PM »

Huh ... sooo are u saying vcds and vag from ross tech will not work? comes with hex+can connector.

You just need to get the login codes from both cars. It'll probably be easiest to retrieve from the instrument cluster.

This is beyond my area of expertise, going to have to wait for f1torrents.
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efrain3282
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« Reply #13 on: October 22, 2014, 03:35:17 PM »

if its 4th gen c/r then you are screwed. avdi would do it probably though.
whats up bud, who and or what is an avdi?
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k0mpresd
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« Reply #14 on: October 22, 2014, 03:42:02 PM »

i really dont think VT will pull pins from that cluster. avdi has tons more features and does all immo's.

ross tech says this about c/r:

Quote
As a general rule, VW models using Immo 4A (with Adaptation) may have Serial Numbers that contain VWZ (for Example VWZ7Z0G7051888). VW models using VWX (for Example VWX7Z0G7051888) "or ones without a Serial Number shown at all, do not use Adaptation and will have the revolving "Challenge" Value in Advanced ID. Those systems using a Challenge Value are not considered supported at this time.

but they list a procedure for adapting, http://wiki.ross-tech.com/wiki/index.php/Immobilizer_IV_ECU_Swapping
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