SSLEDGE1234

Is the wiring in place on the 03 A4s?
<img src="http://pictureposter.audiworld.com/47832/steeringcontrols.jpg">

woofpup

The steering column electronic systems control module has the pinouts for it whether you have the multifunction wheel or not. However, I think something goes between those little switch modules you have pictured and that control module, besides just the wiring. Look at the relevant pinouts in the control module:

C - Connector for multi-function steering wheel/Tiptronic/steering wheel heating
7 - Push-button "-"
8 - Multi-function steering wheel "+" - Power supply
9 - Multi-function steering wheel data
10 - Heater sensor/push-button "+"
11 - Multi-function steering wheel dimmer
12 - Tiptronic Ground (GND)
13 - Steering wheel heating "+"
14 - Steering wheel heating "-"

ILMA_Revo_Stage_2+

That's interesting, I didn't think you could retrofit the steering wheel. Do keep us posted with more info if this is possible and ofcourse the $ investment with install. Did you approach the dealer?

Certainly it sounds like a cool idea but I am pretty confident I won't "swerve" if I just reach out to the car stereo .

SSLEDGE1234

Your eyes "reach" for the stereo too and there is no one looking at the road :-)

woofpup

If it does involve swapping the entire steering wheel, it isn't worth it - the airbag would need to be swapped too (assuming you have the 3 spoke wheel now) and that's pricey. But, if you can infact just install the buttons on the 3-spoke via some makeshift means, then it would be very cool and shouldn't be too expensive.

ILMA_Revo_Stage_2+

true, ok u got me thinking. let us know what you find.

AggregatVier

I'm wondering if they're just "resistor" coded or have a protocol chip.