How To: Retrofit a heated steering wheel to a Mk3 Leon

[grabania]

just out of curiosity, conversion done out of interest or is there really an advantage?

5Q1953549G clock spring supports start-stop engine and drive profiles buttons. It is installed in Cupra Leon and Formentor with those additional buttons in steering wheel. That clock spring has two additional connectors (pin 5 and 6) which are absent on any other clock spring

 

[cairus]

@grabania

Thanks for the info, I learned something new. Since I don't have a kessy myself, it's not interesting for me.

 

[Craig.]

5Q1953549G clock spring supports start-stop engine and drive profiles buttons. It is installed in Cupra Leon and Formentor with those additional buttons in steering wheel. That clock spring has two additional connectors (pin 5 and 6) which are absent on any other clock spring

View attachment 43776

This is great information gathering, well done!

I notice on your spreadsheet that some information, like what vehicles some stalks are fitted to, are missing. Is there a specific reason for this or just not got around to those ones yet? For example, 5FA919719AM is for Leon KL.

 

[grabania]

I notice on your spreadsheet that some information, like what vehicles some stalks are fitted to, are missing. Is there a specific reason for this or just not got around to those ones yet? For example, 5FA919719AM is for Leon KL.

I couldn't be bothered to much to verify and fill every missing information, especially when they are not crucial regarding features. Maybe some day, who knows. That's all

 

[Slavixs]

A little update with 5Q1 steering control module... Found the bug, that Blue/violet wire from gear selector lever must be pinned to BCM T73A/24, other vise car don't see that it is in Parking, also can't lock car doors in any way... I will update my post about wiring also to avoid problems for other retrofitters.
Now, all things work great as they shold!

 

[grabania]

Time to refresh a bit this topic because there are few new things that I've been able to gather since last time.

Adjust steering wheel temperature

My colleague discovered that you are able to adjust steering wheel temperature for each of 3 steps. In adaptations of Module 16 there are three separate options that corresponds to max temperature of each heating level:

• P t soll 0
• P t soll 1
• P t soll 2

Cupra VZ steering wheel retrofit

I know that's a bit of an offtopic, but I am sure that there will be some people interested in this modification.

I am working on retrofitting Cupra VZ steering wheel in Leon 3. It's a bit slow process because parts are not cheap, but I am slowly getting there. Nevertheless there are two known thing for now:

1. Drive mode button does not work out of the box and definitely needs correct gateway parametrization. Here is a tool that should help resolving the issue, but I was not able to test it yet: https://mqbtools.nl/fpa/
2. Start/stop engine button does require 5Q1953549G airbag slip ring

What is special about that slip ring is that it has two dedicated pins that passes through signal from steering wheel to whatever place you connect them. On the diagram below you can see that Start/Stop engine button has two separate cables (pin 3 and 4) that goes directly to the 12-pin connector, which then goes straight from slip ring to BCM (based on Formentor diagrams, not displayed on this sketch). I am not 100% sure, but I believe that Leon 3 with 5Q0 slip ring have start/stop engine button connected to the Kessy module rather than to the BCM. It should not matter that much as long as start/stop engine button from steering wheel sends the same signal as button on center console. It definitely needs more testing to expand the knowledge.

Here is a photo of those wirings. On top is airbag wiring, on bottom is steering wheel wiring.

And last, here's how that VZ steering wheel looks in Leon 3

 

[cairus]

I already know about the conversion with the start button on the steering wheel. We solve the problem by leading the wiring to the original button, then connecting the new button to the counterpart of the plug on the OEM plug. The idea is that you can quickly go back to OEM. Then a panel without a hole and you're done.

 

[Dasher]

I still have a complete set of wheel/airbag/stalks for this modification that I never carried out 9sold the Leon). If anyone is looking for a set. Parts are in pristine condition. Same wheel as above but with paddle shifters.

 

[Craig.]

I still have a complete set of wheel/airbag/stalks for this modification that I never carried out 9sold the Leon). If anyone is looking for a set. Parts are in pristine condition. Same wheel as above but with paddle shifters.

Chuck it up in the for sale section with a price etc, I'm sure someone will snap it up!