VCDS and OBD diagnostic device in the On-Board Diagnostics Shop
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typfred



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Post07-02-2021, 18:18    Subject: Quote

What can I say? I was hoping to get some help from the community.
I only found out about the ways to obtain the code through online resources.
I don't need to tell you that the most mysterious information is also available there.
I'm not a car enthusiast who wants to mess with things like timing to squeeze out a few extra horsepower. I think I've grown out of that phase. My goal is simply to get the Allroad back on the road and use it as a daily driver. (I actually just bought it recently, and it was defective.)
Ich bin mit meinem aktuellen C5 BDG HS unglaublich zufrieden. Der hat mittlerweile schon 403tkm runter und hat mich, bis auf die ESP letztes Jahr noch nie im Stich gelassen. Den konnte ich glücklicherweise für insgesamt 500€ wieder flott machen. (Nachdem mir eine Werkstatt 4500€ Reparaturkosten veranschlagte.) (Deshalb auch der BDG MT als kurzzeitiger Ersatzwagen.) Ich weiß dass ich das jetzt verallg., aber ich habe bisher soo schlechte Erfahrungen mit Werkstätten gemacht, das ich meine Wartung und Reparaturen grundsätzlich selbst durchführe. Nu"Sometimes, when the equipment is too expensive and I don't need it constantly, like for a wheel alignment, I have to go to a workshop."
I'm also good with my hands and I enjoy tinkering.

Well, if there's no way to read the code, I guess I have to bite the bullet and take it to the workshop to get the ESP re-integrated.

Thank you for the feedback!
1.Audi A6 C5 Avant Frontantrieb 2003 BDG HS
2.Audi A6 C5 Avant Frontantrieb 2003 BDG MT
3.Audi A6 C5 Avant Allroad 2002 AKE HS


Translated on 10-07-2026, 17:06.
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typfred



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Post07-02-2021, 18:39    Subject: Quote

Oops, I think our posts overlapped in time.

Thank you for the tips! I'll start looking into it.

Just to avoid any misunderstanding: ESP stands for "Einspritzpumpe," which translates to fuel injection pump.
Okay, thanks for that too! I'll take a look. Those switches are quite cheap and easy to replace.

Regarding the data extraction, I first need to remove the AI modules to determine which manufacturer they are from.
I'll get back to you on that. Thank you!
1.Audi A6 C5 Avant Frontantrieb 2003 BDG HS
2.Audi A6 C5 Avant Frontantrieb 2003 BDG MT
3.Audi A6 C5 Avant Allroad 2002 AKE HS


Translated on 10-07-2026, 17:08.
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chli1976
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Post07-02-2021, 19:24    Subject: Quote

If you're using VCDS to access the instrument cluster, there should be a "Part Number" entry. You can also retrieve the login information from the engine control unit (ECU). To do this, desolder the 24C04 chip and read it with a programmer. If the instrument cluster is made by VDO, this process is usually simpler.
VCDS


Translated on 10-07-2026, 17:09.
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typfred



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Post07-02-2021, 19:28    Subject: Quote

Thank you!
But I'd rather avoid such extravagant solutions that involve soldering.
"Then I'd also need extra hardware and software, and by the time I figure out how it all works, my old lathe will probably be rusted away. I already have gray hair due to my age."
1.Audi A6 C5 Avant Frontantrieb 2003 BDG HS
2.Audi A6 C5 Avant Frontantrieb 2003 BDG MT
3.Audi A6 C5 Avant Allroad 2002 AKE HS


Translated on 10-07-2026, 17:10.
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chli1976
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Post08-02-2021, 8:41    Subject: Quote

"When I have the VDO combination instrument, I'll send you a software that works with a cheap KKL interface. It also works with VCDS if you check a box in the settings. Then you can read out the login information via OBD."
VCDS


Translated on 10-07-2026, 17:11.
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typfred



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Post08-02-2021, 22:40    Subject: Quote

That would be great! Thank you!
1.Audi A6 C5 Avant Frontantrieb 2003 BDG HS
2.Audi A6 C5 Avant Frontantrieb 2003 BDG MT
3.Audi A6 C5 Avant Allroad 2002 AKE HS


Translated on 10-07-2026, 17:11.
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typfred



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Post12-02-2021, 18:20    Subject: Quote

Hello Chili,

I have checked the BDGs (presumably referring to documents or records), and both have a VIN (Vehicle Identification Number) from VDO.
Could you please send me the corresponding software?

Best regards, Mike.
1.Audi A6 C5 Avant Frontantrieb 2003 BDG HS
2.Audi A6 C5 Avant Frontantrieb 2003 BDG MT
3.Audi A6 C5 Avant Allroad 2002 AKE HS


Translated on 10-07-2026, 17:12.
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chli1976
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Post13-02-2021, 13:18    Subject: Quote

Sending you a private message.
VCDS


Translated on 10-07-2026, 17:12.
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iSwaGGers



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Post24-03-2021, 13:16    Subject: Quote

Hi Chili,

Could you please also send me the software?

Sure, here is the translation of the text from German to English:

"lg" translates to "best regards" or "kindly regards" in English. It is a common abbreviation used at the end of emails and letters.


Translated on 10-07-2026, 17:12.
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