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Author Topic: S8 D2 tacho retrofit in A8 D2 gasoline 4.2 facelift  (Read 3256 times)
tankata1
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« on: December 04, 2019, 02:47:14 PM »

Hello all,

I decided to create a topic for the issue after lot of reading here.
Short story long. I have A8 D2 4.2 gasoline MY1999 with IMMO3 tacho which is going dead slowly.
I bought a replacement tacho from S8 D2 MY2001, again with IMMO3, because it was cheaper than the original one (Yes, it is possible in Bulgaria).
OLD tacho is VDO 029, and the new one is VDO 030 - FYI.
I found the 24C17 eeprom next to the main CPU, thanks to the macxxx member -thank you mate. I tried to read it with CH341A cheap programmer.

Dumped EEPROM from the new tacho is available at " https://mega.nz/#!ttplHQAQ " or https://mega.nz/#!ttplHQAQ Kilometers gauge shoud be showing around 158 000km if that can help you is some way.
The key for the file should be: KbcxodTJKPXpBhcyKZtv82ENf8fKt7GwX9odKz1ojJc
Can you please help me find the immo from the dumped new tacho below?

Can I just swap both eeproms if they are the same 24C17 without any further complications?

Tomorrow I will have a VAG K+CAN Commander 1.4 and I will try to pull the current IMMO3 pin from the ME7.1.1 ECU.
Hopefully If I got the both PINs I will try yo to learn the new tacho to the car motor electronic ECU ME7.1.1 corrrect?
Am I missing something?

Regrads,
Steve

P.S. Please excuse me for spamming your mail @ddillenger
« Last Edit: December 04, 2019, 03:04:26 PM by tankata1 » Logged
macxxx
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« Reply #1 on: December 05, 2019, 03:09:01 AM »

PIN should be 5220
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tankata1
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« Reply #2 on: December 05, 2019, 03:55:39 AM »

Thank you very much macxxx!
I will put together the cluster after work, and I will try to login into the new cluster with this PIN.
I will let you know after I do everything.

Regards,
Steve
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macxxx
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« Reply #3 on: December 05, 2019, 08:40:17 AM »

If the adaptation thru vcds wont work ( sometimes immo3 isnt cooperating ) then send me all the dumps ( the orinal cluster and ecu ) and i think i can adapt it manually editing epproms
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tankata1
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« Reply #4 on: December 05, 2019, 11:47:47 AM »

I send you PM macxxx,
Your PIN works perfectly.
Unfortunatelly I cannot read the ECU eeprom with my new VAG K+CAN Commander, and I am a little bit upset.
Currently I am dissassembling my old tacho, hopefully someone will give the PIN from the dump today. Smiley I will bevery glad if that happens.

I will upload the dump after several minuites.

DUMP from OLD tacho! https://mega.nz/#!N8QDUC6A!XUNvtp_Wq7D_KeDgxZVTrq4YeH18NvcnzVQEMl2rv4E

THANKS TO THE MACXXX, NOW I GOT NEW TACHO!

He gave me the both PINs from the old and from the new tacho. Rest is known!
I am giving him a massive thank you!
« Last Edit: December 05, 2019, 01:51:55 PM by tankata1 » Logged
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