[Mariusz]

I retrofitted the heated steering wheel in my 2015 Lux. I added the required connection from J527 to the fuse 11 (10A) on the driver's side and one ground cable, and with the proper coding in the steering wheel module (J527), the heating works fine.

I want, however, also make the button work:

I built my own harness in which I connected the button to J519 (central electronic), ground and backlight power source according to this:

I stole the ground (brown cable) and backlight (grey) from the neighboring button. The backlight works fine, so I'm confident that connections 1,3,4 and 6 are intact.

The button itself doesn't do anything yet when pressed, and I wasn't able to find any specific long coding in J519 to enable to it.

I found a VCDS scan from someone with 2016 Lux with a factory fitted steering wheel heating. There are a few differences in J519 and J527 coding between theirs and mine, but nothing striking. Their J519 and J519 h/w modules are identical as mine, so there's no question if my modules support the button.

I am yet to verify the electrical connection to make sure I didn't make any mistake. I was very careful, so I doubt I managed to screw it up, but I'll check.

I'm almost sure there must be some kind of adaptation or hidden coding in one of those two modules.

Has anyone gone through this exercise yet? Any ideas where to look?

 

[Denker]

Curious if it’s related to the fact that the heated wheel is also controlled through the climate settings in the RNS unit. If it isn’t coded in to the radio then it may not allow the button to work? Just spit balling here.

 

[Mariusz]

I coded it in to the radio. That's how I turn it on and off. I'll try to code it out from the radio and see if the button starts working.
I doubt, it will, as those are two independent modules and the way I understand it, they both can send commands via CAN to the steering wheel module to turn the heating on or off.

 

[Singh]

Good work there! will have to check but I recall seeing an option in the long coding for it somewhere....

 

[Singh]

check confirm if these are selected(ticked)...
byte1 bit 2 steering wheel 16
byte1 bit 7 hvac 08

 

[Megaboss268]

Great writeup! Thank you!

 

[Mariusz]

check confirm if these are selected(ticked)...
byte1 bit 2 steering wheel 16
byte1 bit 7 hvac 08

Yes, these two are checked. There's one correction in the steering wheel module, though. Despite what VCDS suggests, both - bit2 and bit3 need to be checked for the heated wheel to work. So the hex value for byte1 in the module 16 needs to be "0C", not "04"

Anyways, mystery solved, I found the bit that needs to be enabled for the physical button to work. Here's the "central electronics (09)" long coding:

The undocumented "Bit 6". This bit was enabled on the scan from the other Touareg, that had the factory fitted heating, so I just followed it, and voila, the button works.
I'll see if I can feed it back to ross-tech, so they can update it.

I'm thinking about building a few sets of complete wire harnesses for heated wheel from the material that I have left. I wonder if there would be any interest in that.

 

[Flerky]

Hi guys,

I am planning to replace steering wheel with heated and paddles. Can anyone tell me what part number or which index letters need to looking for?
I would need black heated steering wheel with paddles.

Thanks

 

[RS4EVA]

Yes, these two are checked. There's one correction in the steering wheel module, though. Despite what VCDS suggests, both - bit2 and bit3 need to be checked for the heated wheel to work. So the hex value for byte1 in the module 16 needs to be "0C", not "04"

Anyways, mystery solved, I found the bit that needs to be enabled for the physical button to work. Here's the "central electronics (09)" long coding:
View attachment 240965

The undocumented "Bit 6". This bit was enabled on the scan from the other Touareg, that had the factory fitted heating, so I just followed it, and voila, the button works.
I'll see if I can feed it back to ross-tech, so they can update it.

I'm thinking about building a few sets of complete wire harnesses for heated wheel from the material that I have left. I wonder if there would be any interest in that.

did you ever make up harnesses? I desperately want to do this mod.

 

[adphil]

so anyone have a brilliant solution ? The steering with paddles is installed , I changed the clockspring with the one from the donor . my question is , where do I plug the heated button ?

 

[pbussey1]

so anyone have a brilliant solution ? The steering with paddles is installed , I changed the clockspring with the one from the donor . my question is , where do I plug the heated button ? View attachment 254449

Oooh, what's the part number for the button? It mounts in the blanking plate to the left of the hazard switch.
*edit- run this site through google translate. They show where the wiring plugs into the modules.

Обогрев руля — Volkswagen Touareg, 3.0 liter, 2015 year on DRIVE2

Volkswagen Touareg (2G) owner story — electronics. Всем привет. Закончил проект по установке обогрева руля через кнопку(как и идёт с завода). Спасибо за помощь всем кто помог, а особое спасибо Rinat-RB VAG Team bossyara81 Что необходимо: -кольцо с подогревом 4H0953568M или 4H0953568B или...

www.drive2.com

 

[adphil]

useful infos , thanks a lot !

 

[adphil]

I think i just found the other side of thé wiring. I did some research and i know where to plug it . My vcds doesnt allow me to even go to adaptation when im trying to communicate with thé steering wheel.

Paddles are working without any change ...

Envoyé de mon iPhone en utilisant Tapatalk

 

[pbussey1]

Where did you find the harness stub?

 

[adphil]

In a part véhicule in the yard. 2016 I think

Finally I

Was able to program it


Envoyé de mon iPhone en utilisant Tapatalk

 

[pbussey1]

For others who want to build the harness for the heated button, I was able to find the TE part numbers below. I’ll also add this to my heated/tiptronic DIY as I build the harness.

 

[michaelbennett902]

For others who want to build the harness for the heated button, I was able to find the TE part numbers below. I’ll also add this to my heated/tiptronic DIY as I build the harness.
View attachment 254774

Thanks for sharing!

 

[pbussey1]

Has anyone else tried this button coding recently? Byte 22, bit 6 doesn't actually show up in VCDS (anymore?), so if anyone has coding that works I'd appreciate the reference! I've also emailed Ross-Tech about the discrepancy so if we have an update I can reference it to them as well.