Replacing the engine control unit

Hello,

I have a question. I have a Volkswagen Golf III TDI with a 1Z engine. And I have a new control unit that I would like to install in the vehicle.

I have the option of borrowing a VAG-Com from an acquaintance or doing it together with him.

However, he has only used it so far to read the error codes, and therefore he doesn't feel comfortable doing that.

Could someone please give me a quick guide on what I need to do here? Or would it be better to have it done at a VW service center?

Sure, no problem.
Oliver.

The engine control unit (ECU) numbers and the year of manufacture would be helpful.

If he already has an immobilizer, it must be adapted to the control unit. Search: immobilizer (WFS) and adaptation*.

It should also be found in the relevant articles.

Regards,
Private.

It depends.

Based on the question, it seems there's a possibility that neither of you are the most physically fit. To be on the safe side, would a workshop be a better option?

If you feel confident enough: it depends on a few things, such as the presence of a WFS. If a WFS is not available, simply connect the new device and that should be it.
If a WFS (Web Feature Service) is available, some minor adjustments may be necessary. Please refer to the documentation on the DRV (presumably a company or product) website. It contains helpful descriptions that should guide you through the necessary adjustments.

What is the purpose of the STG exchange? Is the old one defective?

edit: privatebereich was faster again.

Sure, no problem. Where can I find the pages for m f t?

Well, as I mentioned before regarding engines, I'm having a problem with a completely new engine that I just installed. Since my original engine already failed at 197,000 km, and I've already replaced the turbo and other components, I'm naturally wondering what other potential problems might arise with the engine.

Since I have a control unit available from a similar scrapped vehicle, I would like to replace it. It's just lying around, and according to VW and the part number, it's the correct one.

Everything else has been replaced with the new complete engine (including injectors, glow plugs, oil pump, etc.).

And after 28,000 km, it seems to be failing again, and it's indicating this with a slightly oily rear windshield.

Where can I find the pages of m f t?

Type these three letters into Google... The first link is yours.

Regards,
Private.

Thank you very much. I found it.

I probably have a 2nd generation WFS installed. I always thought you needed some kind of code for that, which only VW can calculate. But according to the description, it's only for reading once and writing once.

Does this also apply to used engine control units, or only to new ones?

This refers to the 3rd generation of WFS (Wireless File System).

Oh, I'm so lucky.

Great. Thank you very much. I'll try that tomorrow morning.

HugoHiasl wrote:

.... Does that also apply to used control units, or only to new ones?

With WFS2, it doesn't matter if it's new or used.
When buying a WFS3, make sure to check whether it's new or used.

joergs wrote:

HugoHiasl wrote: I always thought that you needed some kind of codes that only VW can calculate. This is for the 3rd generation of WFS.

... really?

Yes, of course, Jörg is right.
There is absolutely no way to change the control unit (STG) at WGS3 without resorting to the services of the "friendly" staff.

[Translating...]

http://www.ross-tech.com/vag-com/cars/index.html

Thank you very much to everyone involved.

It worked perfectly.

However, I was surprised to find oil in the high-pressure line connecting the suction bridge to the control unit. That can't possibly provide accurate results.

I replaced the cable. But the intake manifold itself is also a bit oily. Is that normal?

Yes, that's normal. It's coming from the crankcase ventilation system (KGE), which connects between the air filter and the turbocharger.

Regards,
Private.

Great. That reassures me.

Thank you.

Okay, I'm bringing this topic up again because yesterday I replaced the throttle body (STG) with a WFS (throttle control module) of the 1st or 2nd generation for the second time. Both times, I tried using the latest Vagcom software to clear the adaptation values or read channel 00, but both times without success. The 1551 worked without any problems.
I used the shareware version, and according to the manual, it shouldn't have any limitations regarding customization. So why isn't it working?


Sure, here's the translation:

'Best regards, Dr. B.'

dr_braun wrote:

... I used the shareware version, and according to the manual, it shouldn't have any limitations regarding customization. So why isn't it working?

Because it doesn't work with the shareware:

http://www.ross-tech.com/vag-com/vag-functions.html

dr_braun wrote:

..I'm bringing this topic up again, as I replaced an engine control unit (ECU) with a WFS (Wiring Harness System) of the 1st or 2nd generation for the second time yesterday. Both times, I tried to delete the learned values or read channel 00 using the current Vagcom software during the adaptation process, but both times without success. The 1551 worked without any problems. I used the shareware version, and according to the manual, it shouldn't have any limitations regarding customization. So why isn't it working? MFG Dr.B

Okay, bitte gib mir den deutschen Text, den du übersetzt haben möchtest, und sag mir, von welchem Distributor (Hersteller/Vertriebspartner) das Handbuch ist. Dann liefere ich dir die Übersetzung. According to my, i.e., the Kaufmann KFZ diagnostic system, nothing like that is included or promised.
That an adaptation can only be the licensed version is stated, among other things, in the description of the kit .

http://shop.dieselschrauber.de/product_info.php/cPath/21/products_id/38