Retrofitting MK7.5 Golf KESSY to MK7 Golf

[xabhax]

Ya, I would try manually selecting. But I think you might have to buy a new one. They aren't expensive new. Or try and jump through some hoops to use the new one

 

[bilaal89]

@davide.bonetti is there any way i can contact you personally, id like to pick your brains on upgrading mk7 golf

 

[davide.bonetti]

@bilaal89

I cannot help for KESSY retrofit.

 

[Cuzoe]

Old thread, but very much on topic. KESSY has been done on a car that didn't come with it at all. I'm in the process of doing this right now, handles being dropped off for paint on Thursday.

https://www.drive2.ru/l/652159105292568963/

My new stuff...

 

[Kushdaiin]

Old thread, but very much on topic. KESSY has been done on a car that didn't come with it at all. I'm in the process of doing this right now, handles being dropped off for paint on Thursday.

https://www.drive2.ru/l/652159105292568963/

My new stuff...
View attachment 292609

I suppose I should read that link. Very curious to see how you adapt the module to the car. I paused my project on trying to retrofit the rear KESSY on my mk7 R as I couldn’t find a way to retrofit the 40-pin KESSY module from the mk7.5. Can’t wait to see your results!

 

[Cuzoe]

The biggest hurdle for some time has been the electronic steering lock. That unit was tied to VIN and, as I understand it, to the KESSY module part number that came in the car.

But, as described in the link, there are now cars being delivered with KESSY and without the electronic steering lock.

 

[Kushdaiin]

The biggest hurdle for some time has been the electronic steering lock. That unit was tied to VIN and, as I understand it, to the KESSY module part number that came in the car.

But, as described in the link, there are now cars being delivered with KESSY and without the electronic steering lock.

What module p/n did you go with? And the thought being that this p/n will work without being tied to the ESL?

 

[GolfRRRR1]

This may not help but Humble Mechanic added Kessy to his back doors on his Golf R...still may gain a couple pointers from the video. Good Luck.

 

[Cuzoe]

Humble mechanic was fortunate enough to have a late enough car that he already had 40 pin KESSY module. Earlier 7s, maybe even earlier 7.5s, had 32 pin module with no pins for rear handle antennas. I have not seen anyone have success going from 32 pin to 40. But that isn't to suggest it's not possible, this entire retrofit seemed nearly impossible previously.

@Kushdaiin My module is part number 3Q0 959 435 N. One of the peculiar things is that the adaptation in the BCM for electronic steering lock has to be set to "not installed" before connecting the KESSY module to the CAN bus. And that has to be a new module, or a used module from a car that also did not have electronic steering lock.

There does not (yet) appear to be away to get a KESSY module back to a completely uninitialized state. I'm sure at some point it will happen if people remain interested. You can get gauge clusters set back to zero these days. Granted there's way more interest than that compared to people trying to retrofit KESSY.

 

[Kushdaiin]

@Cuzoe I've been contemplating this ever since you posted last week and while this may not be as helpful to you as you're putting in a complete KESSY system, I'm wondering now if it's possible to dovetail or splice the front door KESSY wires with the rear door handles to get them to at least operate. I recall that the MK7 Coding string has bits specifically for rear door handles, so either they were anticipating an auxiliary connection point for all handles or the software and hardware developers never bothered to fully communicate. I'm guessing it's the latter.

Very curious about having to set the ESL to 'not installed'. Wondering if that'll affect any other modules. Anyway, I can't wait to see the progress you make on this project. It's got me thinking again and I've got no purchased projects laying around to install at the moment!

 

[Cuzoe]

Just adding info here, so I don't lose it...

40 pin connector for the 3Q0 module
VAG PN - 4H0 906 231 - about $20, or TE PN - 1-968321-2 - about $3
You will also need each of the 20 pin inserts, under $1 each - 2-968322-1-ND and 1-968322-1-ND

Repair Wire - I'll find it, soon-ish, but figure somewhere north of $5 each, each will have two pins

Contacts (female) for this connector (technically for 20 gauge wire but I've had no issues with 22 gauge)
Gold Contact - PN 5-965906-5 - $.20 each
Tin Contact - PN 5-963715-1 - $.07 each

You'll need a crimper of some type, one like this works fine.

 

[DV52]

My module is part number 3Q0 959 435 N. One of the peculiar things is that the adaptation in the BCM for electronic steering lock has to be set to "not installed" before connecting the KESSY module to the CAN bus. And that has to be a new module, or a used module from a car that also did not have electronic steering lock.

@Cuzoe : Hi.
Hmm...... Odd!!! I'm always intrigued by how "Yankee" version MQB platform cars are coded (some very wierd stuff happens on NAR models - IMO, of course). But why is the ELS is your BCM set to "not installed? - it don't make sense?

On older model BCMs that have an active long-code string, the software switch that told the BCM that an ELS was installed was on Byte 16. Bit 3. However, on your more modern Golf (without an active long-code string), I assume that even on NAR model BCMs, the ELS switches are in the group of channels with the Parent TAG number IDE11944 (using VCDS). And I assume that the equivalent software switch to Byte 13, Bit3 in the adaptation channel database for your BCM is:

• IDE11944-ENG142014-Keyless access and start authorization-Elektische_Lenkradverriegelung,

I no longer participate on the Ross-Tech forum because of Uwe's censorship of forum members who have an alternate view to his ultra right-wing stance on gun control. The banner on the Ross-Tech site now even contains crossed riffles!!

Of course Uwe is entitled to his view - but when the forum allows discussion on this matter (and it does - the forum has a thread called "Advice on weaponry") censorship for legitimate counter positions is unacceptable IMO!

Anyhow - rant over! I found a set of admaps for a NAR model MY19 Golf Variant on the Ross-Tech site which happens to have your 3Q0 959 435 N KESSY module - the BCM admap for this car has the following entry:

• IDE11944-ENG142014-Keyless access and start authorization-Elektische_Lenkradverriegelung,installed ,3

Not sure why your BCM should be different?

Don

PS: Vehicle admaps -see HERE

EDIT
Admaps for NAR car with 3Q0 959 435 Q module (see HERE) has IDE11944-ENG14201="not installed". Seems like something happened in the dataset versioning process!!

 

[Cuzoe]

Yoooo @DV52, I wondered why I hadn't seen your posts over there in a while... and I get it. Did not notice the guns, yikes (in my opinion, haha).

Now on the subject, my car does not have KESSY at all. Which therefore means no ELS. I would assume any car with KESSY and ELS will have it coded as installed, like the 2018 Golf R scan you checked.

But... there are cars being delivered these days with KESSY and without ELS (at least in Europe, not sure about here in NAR, but maybe not yet). But these KESSY cars without ELS are what make the KESSY retrofit more possible on MQB (though still not easy). If you check the drive2 link I posted earlier you'll see that user MadWarlock (who also had a car without KESSY) found that having ELS coded as installed seemed to set a flag in the KESSY module that could not be reset. The solution was set ELS not installed before connecting the module, or try to find a used KESSY module from a car without ELS (difficult in Europe, maybe impossible here in the states).

As for my car...
Originally with pre-facelift BCM and Byte 16 Bit 3 was unchecked/not installed, as you would expect with no KESSY.
And now with facelift BCM channel IDE11944-ENG142014-Keyless access and start authorization-Elektische_Lenkradverriegelung - not installed, also as expected with no KESSY.

 

[DV52]

@Cuzoe: Arrhhh.............. now I understand what you meant - thanks for clarifying!!

I always get confused with American accents (of course Australians don't have accents)!

Don

 

[DV52]

PS: So according to your logic - the second set of admaps on my post above means that this NAR Jetta falls into the category where the car has KESSY installed - but no ESL!