Retrofitting MK7.5 Golf KESSY to MK7 Golf

[Kushdaiin]

I'm looking for some assistance to understand the complexities and the dataset/coding needs required to changing out the 32-pin KESSY module (3Q0959435C) from my 2017 MK7 Golf R to the MK7.5 Golf R KESSY module (3Q0959435L). I've attempted this retrofit with a local dealer and with a local tuner (skilled with ODIS) with both were unable to get past ODIS message stating that the module is not intended for chassis and was not able to be adapted. Neither had any success or knowledge of anyway to get around the message. My next step is to go back to the dealer with the 3Q0959435G module (as per a user on ross-tech suggested) and see if we can get that one to work. Otherwise, the master tech at my local dealer said that because of the way ODIS has been centralized at VWoA corporate, he can't get past the message from ODIS identifying the 435L module not associated with the build certificate. Any incite or suggestions would be appreciated. Thanks! I understand that this modification may no longer be possible due to ODIS hurdles.

 

[davide.bonetti]

very few people attempted a KESSY retrofit, and to my knowledge even less succeded.

I have never investigated a lot because I couldn't care less about KESSY, but apparently even if you take all parts from the same car (VIN matches) then it's still a pain. there is something related to immo that cannot be programmed (it's like one write only in the factory).

now I see that you are not retrofitting but just trying to replace the module. why would you replace it with a different one, in first place? if it's faulty, just get the one that ETKA dictates to your VIN and I bet ODIS won't have a problem with that, just follow the "replace control module" guided function.

 

[Kushdaiin]

very few people attempted a KESSY retrofit, and to my knowledge even less succeded.

I have never investigated a lot because I couldn't care less about KESSY, but apparently even if you take all parts from the same car (VIN matches) then it's still a pain. there is something related to immo that cannot be programmed (it's like one write only in the factory).

now I see that you are not retrofitting but just trying to replace the module. why would you replace it with a different one, in first place? if it's faulty, just get the one that ETKA dictates to your VIN and I bet ODIS won't have a problem with that, just follow the "replace control module" guided function.

I actually am retrofitting. I didn't think it would necessarily be easy based upon the very little information on doing so. The only reason I'm doing this is to add the rear KESSY handles to the car. The existing module is a 32-pin module that does not have enough pins to support the rear door handles. The replacement module is a 40-pin module that has specific slots for the door pins. Seems trivial until you have two children in the back seat. But hey, that's why I'm doing it. I appreciate any and all input. Thanks!

 

[davide.bonetti]

there was a thread on the Ross Tech forum, it looked promising but I think it ended in a soap bubble.

so if the guy made it he's probably not willing to share the info.

why would you want KESSY anyway? much easier to steal a car with KESSY than one without.

 

[Kushdaiin]

I’m currently active on that forum attempting to get answers as well. Unfortunately, the main poster who got it to work hasn’t responded since I first contacted him about a year ago.

You have a fair point though but I’ve had KESSY cars for years and have never had any issues where I live in the US. I think the Kiaboyz have it too easy and cheap right now to bother with VWs. Additionally, again in the US, VWs are fairly low on the ‘most stolen car’ lists as there aren’t nearly that many of them compared to in Europe and not worth the monetary value or know how to steal them.

Again, I would like the rear KESSY, so that I can access the rear doors when I have my kids or dog in the back without having to make the extra lunge to the front doors. Lazy? Kind of. Still of great use to ME.

 

[xabhax]

Instead of letting odis automatically select the car, you can do it manually. I had to do that to remove cp for my 2q0 lane assist camera. If I let odis detect the car it would not read the 2q0 module.

Is the kessy module your retrofitting new or used?

 

[Cuzoe]

Instead of letting odis automatically select the car, you can do it manually. I had to do that to remove cp for my 2q0 lane assist camera. If I let odis detect the car it would not read the 2q0 module.

Is the kessy module your retrofitting new or used?

Unrelated to the OP... how are you liking the 2Q0? Assuming there's a noticeable difference at all. I have the 2Q0 and the mount adapters sitting in the garage, waiting for install.

 

[xabhax]

Unrelated to the OP... how are you liking the 2Q0? Assuming there's a noticeable difference at all. I have the 2Q0 and the mount adapters sitting in the garage, waiting for install.

Keeps a better line, does tighter turns. I see a difference.

 

[Cuzoe]

Sold then, haha. I'll have to pay to get Traffic Sign Recognition FEC I guess , if I want Travel Assist/pACC. Will be the right time to install my overhead ambient lighting though.

 

[xabhax]

You know who can get a fec for traffic sign?

 

[Cuzoe]

I will most likely have the guys at VAG Retrofit and Coding handle that.

 

[Kushdaiin]

The KESSY module is used from a GTI. I have two other modules coming in case the revision mattered (another 435L and a 435G). Is there an obvious way to manually select the car? Just wondering if the Master Tech at VW would be aware of this option.

 

[xabhax]

The KESSY module is used from a GTI. I have two other modules coming in case the revision mattered (another 435L and a 435G). Is there an obvious way to manually select the car? Just wondering if the Master Tech at VW would be aware of this option.

At the top of the screen where you pick the year there are two radio buttons. One for manual, the other for automatic.

I was under the impression any module that had to do with the immobilizer had to be new. That you can't program a used module to a different car.

Ya, found an article. From Feb 2021 vw has to approve any used module programming for the immobilizer syste.

Article

Edit: it says it only applies to audi. So I maybe wrong.

 

[Kushdaiin]

Well shucks! Thanks for the article. I suppose that means that I would have to buy a new module, use ODIS in manual mode to load the dataset and adapt?

 

[Kushdaiin]

I might actually might see if I can get my dealer to apply (not so hopeful but they are pretty flexible with me).