VagCOM und die Tachojustierung | Posts 16+

Take a look at eBay under "mileage adjustment" – you'll find software that allows you to tamper with the mileage reading via OBD. However, there are differences between the Golf III and Golf IV models. The program should cost 15€.
Okay, I saw that, but I don't own anything like that!

Hello!!

There's a software that runs under DOS and is supposed to work with a Golf 4 via OBD. However, some kind of buffer needs to be extracted from the dashboard assembly first, and only then can the mileage be changed. I assume that the mileage is completely erased and then reprogrammed. To do this, the entire dashboard needs to be disassembled, including the needles, dials, and everything else. I saw it myself when "Tacho Heini" was here with his DIGA Consult system. He explained to me that there are so many different configurations in the Golf 4, and that only some of them need to be disassembled.

greetings with soot

It can also be done without software.
The mileage data is stored in the speedometer's EEPROM. I should probably look into this. Maybe I'll think about it next weekend. Right now, I don't have the time because of my diploma thesis and other commitments.

That's correct about the EEPROMs, BUT the checksum needs to be adjusted, otherwise the whole thing will light up like a Christmas tree!
So, once again, software is needed here. With the older G3 models, the combination instrument is also not connected to the OBD interface. Even "tacho tuners" (companies that modify speedometer readings) do it by removing the EEPROM, reading its contents, changing the values, recalculating the checksum, and then either re-flashing the EEPROM or, using a clip-on system while it's still installed, programming the EEPROM.
"For vehicles manufactured from 1998 onwards, the settings can be easily adjusted via OBD. However, from 2001 onwards, the same procedure applies: you need to clear the buffer from the instrument cluster to reset the values to zero, and then you can reprogram it, EVEN WITH VAG COM!"

Russian greetings!

Hello.

I found this today:

[E-BOOK]

Here, you can buy a complete set that includes everything you need to change the mileage.

If you were able to change the mileage reading, I would appreciate it if you could let me know.

Best regards from Mark.

Hello everyone!

Try, try, and try again. Unfortunately, even the tip from "VWGOLFIII" didn't work. This test software doesn't even recognize the adapter; there's absolutely no response. It just displays colorful images and nothing else. Even channel 40 didn't help.

I simply don't feel like giving those guys at VauWeh any money.

Does anyone among you have a solution ?

I would be grateful for ANY advice.

Peter.

Someone is offering a speedometer adjustment software and a cable description for €7 on eBay again.

keyword: 'speedometer calibration Golf III'

@ MOZZ

I've been searching for a part for my instrument cluster (model 2001), but I haven't found anything that looks like a buffer or a pull-out mechanism.
What should this part look like?

Greetings.

Hello!

There's no buffer. At least, that's what the professionals claim, and honestly, I've looked into it myself, and there's nothing there. My numerous attempts with various software have also been unsuccessful. Alpha8 and other solutions are useless. I also obtained software that communicates via the LPT interface and an extra slot on the back of the instrument cluster, but that interface no longer exists on newer instrument clusters. Newer instrument clusters communicate via OBD II, but unfortunately, I haven't found anything that actually works yet. But I will continue searching until I find something.

Greetings to you all.

Peter.

Hello!

Well, sorry, but our usual guy, Johny, who always shows up, told me. I actually suspected he was trying to rip me off, but next time, I'll be watching him very closely!

Sure, here's the translation:

"gruzz" translates to "greetings" or "regards" in English. It's a casual way of saying hello or goodbye.

Hello!

I believe that this ALPHA8 software is already functional. On my system, the software can read the type and number of the instrument cluster, but I cannot write any data back. I suspect that this is due to the ISO 9114-2 standard. I believe that this software could potentially work with an adapter that supports this ISO standard. As I said, it's just a guess.

Now, the big question is: Where can I get this adapter?
Which adapters comply with the ISO 9114-2 standard?

Greetings, Peter.

Are you sure about the ISO number? I only found them (through Google) on a few Eastern European websites, which seem to have copied content from each other.
ISO 9114 (specifically, without the -2 designation) deals with the water content of crude oil (or something similar); it definitely has nothing to do with diagnostics.

Best regards, Rudi.

Hello!
I think you mean ISO 9141, which is the ISO standard that our VAG adapters are based on!
I received the alpha8, which has a minimalist design, and it also works with VAG-COM when it's running well!
and I can get the "connect" option as well, but I'm having the same problem as you when it comes to adjusting the settings!
hello mozz

'I guess I'm not alone anymore! It seems like some information is being read from the combination and displayed. Then it says, 'Please wait...''

Okay, after that, I'll be adding the combination lock and anti-theft system.
km standing:
Okay, I'll enter something and then please wait. Eventually, the laptop will crash with a squealing speaker, and that's it. The kilometers change, but nothing else happens!

hello mozz

Has anyone managed to do this on any car before?
While a lot of nonsense is written on eBay, I contacted 2-3 people who bought the items, and they also claim to have been able to make them work...

Is it really possible?
Is this ISO 9141x standard, which is the basis for building the adapter, not the same one that our existing adapters also operate according to? But why should it work with their setup, and not with the one I have here?