Unlock/code GRA Golf VII

Hello!

I have a customer with a Golf VII who purchased and installed an officially available GRA retrofit kit.

"The document containing the codes is also available, but I was unable to code/activate the cruise control."

It should be properly configured, and the MuFu (likely referring to a specific device or system) control panel has also been added and correctly programmed. Initially, there was a memory error with an implausible signal from the cruise control system. I suspect it was due to a wrong pin connection, which disappeared after the pins were rearranged.

What am I doing wrong? What is the exact procedure?
Or, is it perhaps not possible to do this via VCDS?

Thank you very much, and best regards.
Alex.

Oh dear, there are so many error messages that it's impossible to see the forest for the trees. Were the errors present before the GRA was installed?

I would clear the errors and see which ones reappear. Also, your battery voltage is much too low. First, ensure a sufficient battery voltage (greater than 12.3V).

vag-driver wrote:

Oh dear, there are so many error messages that it's impossible to see the forest for the trees. Were the errors present before the GRA was installed? I would clear the errors and see which ones reappear. Also, your battery voltage is much too low. First, ensure a sufficient battery voltage (> 12.3V).

Hello!

First of all, thank you for your input. Do errors and tension have anything to do with the fact that it was not possible to encode the GRA?

Thank you very much!

Best regards, Alex.

dr.zikzak wrote:

Do errors and tension have something to do with the fact that it was not possible to encode the GRA?

Possible. However, this speculation is irrelevant because, first and foremost, the required voltage must be ensured.

vag-driver wrote:

dr.zikzak wrote: Do errors and tension have something to do with the fact that it was not possible to encode the GRA? Possible. This speculation, however, is irrelevant because, first and foremost, the required voltage must be ensured.

Hello!

Okay, I understand. I'll connect a different charger.

How exactly should I proceed? I'd like to confirm this beforehand to ensure that my customer doesn't make a wasted trip.

Thank you very much!

Best regards, Alex.

Good evening, Alex.

Andreas has already shown you the way.

1. Connect the diagnostic charger.

2. Clear all errors.

3. Double-check to identify any existing errors.

Check the code and review it again.

Diagnostic interface, engine control unit, steering column control unit.

Use the MQB Assistant for extended coding.

Do not perform the coding procedure with the engine running.


Read 5 new error codes.

If there are no errors, be happy.

6. If errors are present, perform another automatic scan and check the part numbers.
Please inform us of the components that were exchanged.


And yes, it's possible that the encoding won't be accepted if there are error entries.



Best regards,

Michael.

dr.zikzak wrote:

I have a customer with a Golf VII who purchased and installed an officially available GRA retrofit kit.

The G7 comes with various pre-installed GRAs (Graphics Rendering Architectures) with different user interfaces, which also vary across model years.

The control could be operated either via the turn signal switch or, if equipped, via the multifunction steering wheel. If the MFL (Multi-Function Lever) is to be retrofitted, further measures are necessary (steering wheel control unit + gateway replacement).

The GRA (presumably a suspension system) initially functioned without any additional sensors (without adaptive cruise control). Later model years (starting around 2015) came with adaptive cruise control as standard and therefore required the radar sensor and other components. I would be surprised if the version with adaptive cruise control could be easily retrofitted.

Therefore, I would first ask the customer which exact retrofit kit they purchased and check whether it is actually compatible with the model year and equipment level. (Your statement "officially available" makes me pause...)

Regards,
Guste.

Hello!

Thank you everyone for your suggestions and recommendations.

To clarify once again, to avoid any misunderstandings:

The multifunction display has been retrofitted and everything works perfectly, except for the cruise control operation. The retrofit kit is one that is sold by various online shops with an original VW deactivation document – you can't buy it from VW anymore. However, it is therefore an official unlocking document, not black market goods, and not from Alibaba or anywhere else.

When I tried to program the cruise control once (back then with a Chinese-made control panel, etc.), I didn't realize that retrofitting something like that into a vehicle now requires an incredible amount of effort, and – most importantly – getting it to actually work. I assumed that you install everything, connect all the components, and then code or unlock it using this specific document that you can only obtain from VW.

So, I sent the customer away at that time and told him that he had to buy an official kit, including the code, otherwise it wouldn't work...

Done and dusted - he replaced everything with original parts and is now back to have it unlocked...

After researching online, it appears that many sources state that this activation can now only be performed through "ODIS" access... Is that correct? If so, will an average consumer like myself be able to get one, or will I inevitably have to go back to Volkswagen?

I'm not entirely sure, but I don't think the error memory is affecting the fact that I can't log in to the control unit. The customer also showed me a document, which apparently came from the VW guidelines, and which also states that there should be a separate routine for this purpose within the testing software...

I can't say much more at the moment, and unfortunately, I haven't made any progress yet. Perhaps someone will be able to tell me exactly how to proceed if I want to activate the cruise control – or maybe it's not possible at all without using ODIS.

Thank you very much!

Best regards, Alex.

It's possible that only VW can activate it. The reverse camera in my colleague's G7 could also only be activated by VW. It didn't work with VCDS.

Hello Alex,

The business relationship between you, as an average consumer, and your customer is therefore not based on a commercial vehicle business?

Then the solution is simple.

"Everything can be coded with VCDS, after which you need to provide your customer with a way to get those codes into the SVM (Steuergerät-Software-Modul)." This goes beyond ODIS or alternative remote services.

If everything is correctly coded and installed, your customer can use the activation document to go directly to the manufacturer and have it activated online.

There are 3 alphanumeric codes on the original.


Regarding your question about Org.-Tester.

You can buy a VAS for a price in the low four-digit range.
To gain access to the server, you must be able to credibly prove your professional qualifications to the manufacturer, especially when it comes to SFD (Software Fault Tolerance) or component protection.

After that, you also need to be enthusiastic about the fact that you will be transferring four-digit amounts to the corporation on a yearly basis.

Currently, even independent workshops can still handle at least 85% of their work using VCDS. In that regard, VCDS is still a good choice.


Does that help you as an answer?


Best regards,

Michael.

Hello!

Thank you again for the answers.

I already have a business where I offer services and maintenance, as well as refurbishment, for vehicles. It's what we call a "free fabric" in Austria.

Then we're probably getting to the heart of the matter... It doesn't make sense to me to purchase VAS systems or an ODIS access, and, as I have now been confirmed again, it is not possible to run the GRA without these things.

Can VW now perform the unlocking process using the existing resources? Or do you object?

What does it cost?

Thank you very much!

Best regards, Alex.

Hello Alex,

Your business model is a thorn in the side of the Chambers of Crafts and manufacturers in Germany because it can be operated without registration in the Crafts Register and, consequently, without a Master Craftsman's certificate. It probably won't be enough to legitimize it.


"Activation documents have a part number and were specifically created for the purpose of activation." In that regard, it's easily earned money for a service measure that involves a manageable amount of work. No one objects.

For the activation, a maximum of €90 should be charged. (Ask beforehand ).


Best regards,

Michael.

@dr.zikzak You have PN.

Hi,
Although the thread is a bit old, I'm currently facing the same problem.
We installed the VW retrofit kit for the standard multifunction steering wheel, which was originally installed, in our G7 (1.6 TDI, 77kW, 2014 model).
So far, it went well... except for the coding.
The steering wheel electronics (16) only have two bytes, and according to the assistant, the value is already correct (0400). (00 indicates no GRA or GRA via the multifunction steering wheel).
"And on the engine control unit, the "GRA installed" bit could be easily set (5)." Byte from the end, changing 04 to 24.
Enabling the GRA results in a GRA symbol with an exclamation mark ('!'), indicating a GRA error.
In the engine control unit (ECU), the following error is detected:

Code:

Adresse 01: Motorelektronik Labeldatei: DRV\04L-907-309-V1.clb Steuergerät-Teilenummer: 04L 906 021 M HW: 04L 907 309 B Bauteil und/oder Version: R4 1,6L EDC H22 5517 Codierung: 01110032032401092000 Betriebsnummer: WSC 00028 028 00073 ASAM Datensatz: EV_ECM16TDI01104L906021M 002009 (VW37) ROD: EV_ECM16TDI01104L997021.rod VCID: 2F3AE2D8179D7352868-807A 1 Fehler gefunden: 17149 - Codierung/Varianten der Steuergeräte im Antriebsstrang prüfen P1647 00 [00100110] - - [Checking coding/versions ofcontrol modules in drivetrain] Sporadisch - unbestätigt - geprüft seit letzter Löschung Umgebungsbedingungen: Fehlerpriorität: 2 Fehlerhäufigkeit: 2 Kilometerstand: 241995 km Datum: 2024.05.15 Zeit: 01:14:11 Motordrehzahl: 0.00 /min Normierter Lastwert: 0.0 % Fahrzeuggeschwindigkeit: 0 km/h Kühlmitteltemperatur: 74 °C Ansauglufttemperatur: 70 °C Umgebungsluftdruck: 1000 mbar Spannung Klemme 30: 12.440 V Verlernzähler nach OBD: 40 Variante des ACC-Bits 0-7: 0 Schalter für GRA-Bits 0-7: 1 Schalter für GRA: Betätigung-Bits 0-7: 32 Schalter für GRA: Betätigung-Bits 0-7: 1 Variante des ACC (Codierung)-Bits 0-7: 1 Beschleunigung: 0.000 m/s²

placed.

The extended measurement data in the steering wheel electronics indicates, when a GRA channel is selected, that the data is either "not encoded" or "not available."

Does anyone have any idea if anything needs to be configured in the steering wheel electronics, perhaps something beyond what the assistant suggests? Or have I missed something?

The SwaP code for activation via ODIS Online was included with the retrofit kit (currently, the only problem is getting an appointment ), so there's a fallback option available.

Thank you for your support.

Best regards,
Micha

For the sake of completeness, here's the last complete scan before the renovation.

Best regards,
Micha