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B7 RS4 - Help, wiring up aftermarket steering wheel controls.

oxblood8

Member
Hey All

I bought this universal steering wheel control to pair with my new Pioneer DMH-Z5350BT head unit

17Md3hF

qg1elz11czg61.png


swc.png

So for the wiring i've taken the harness that plugs into the head unit via the 3.5mm jack and hooked up the Ground, Key1, Key2 wires, then hooked the ACC wire up to the red wire from the head unit. Note: Left the ANT wire as I believe that is not required?

Here is a pic of the wiring harnesses for reference.

swc2.png

466c1jdfczg61.png




However when powering on the head unit, the "Steering Wheel Control" menu item stays greyed out. I have ensured that i have "Source Off" which I saw on a video online.
One thing we noticed is that on the small black receiver box, there is a little red light inside of it. When I touch on the red power wire, the light goes on then quickly goes off. I am wondering whether that light should stay illuminated the whole time. If that is the case, then I may have received a faulty item. See pic below for location of red light (hole where red arrow is pointing).

8y9hl2yiczg61.png


swc3.png



Another question, in the first image. Where the green arrow is, am I supposed to plug this into my Aerpro harness as per the orange arrow below?

swc.jpg


I have tried both plugged in and unplugged in the Aerpro and neither is working.

So in summary

  • Should the red light on the little black receiver stay on the whole time (red arrow in image 3)?
  • Should I plug into the Aerpro harness as per the image above?
  • Am I correct in not attaching the ANT wire?

If everything is hooked up correctly, I am suspecting that I got a faulty unit.
 
I would try little plug (green arrow) directly into back of headunit in the wired remote socket.
 
Starting with the simple things, the ANT wire is if you have a power antenna, you don't so you don't need it.

How are the steering wheel controls powered? Looking at the pictures its a bit hard to reconcile how it all goes together, what is the kit number and I'll have a Google and see if I can make sense of it.

You must be unplugging the head unit connector and plugging into what and then back to the HU. The jack needs to be plugged into the HU, that the comms link.
 
The controls themselves have a CR2032 battery in each one. Its just a cheap eBay set so not sure if you could find info on it.

I've tried everything i can think of including the order in which to hook everything up, so i do this order

1. Unplug everything (including the socket into the headunit for power/speakers etc)
2. Plug in SWC patch lead 3.5mm into back of head unit
3. Attach SWC patch lead red wire to red wire in head unit harness
4. Plug in head unit power & speakers socket
5. Plug in SWC patch lead black 12-pin connector into the Aerpro unit (orange arrow above)
6. Plug in all other Aerpro interface adapters back to the factory ones.
7. Fire up head unit, go to setting, "Steering Wheel Controls" remains greyed out

These are the instructions that came with it.

swc1.jpg swc2.jpg
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OK, so there are 2 parts to the kit, the SW controls with wireless receiver and the Airpro module. Dumb question I assume the SWC receiver and AirPro are compatible?

I assume the connector that goes into the Airpro was premade and not assembled by you?

SWC control receiver plugs into Airpro module and the Airpro plugs into headunit?

Reading the instructions it talks about a yellow wire, which is the wireless receiving antenna, I reckon in your case its the grey wire, disregard what I said previously said in my last post about the grey wire, as I cant see a yellow one, you need to straighten this out and place it close to the SWC. The red LED in the receiver most likely is lit when it is receiving signals from the controls. Place the SWC controls close to the grey wire and see what happens.
 
OK, so there are 2 parts to the kit, the SW controls with wireless receiver and the Airpro module. Dumb question I assume the SWC receiver and AirPro are compatible?

Not a dumb question, maybe its not compatible, however it is supposed to be universal

I assume the connector that goes into the Airpro was premade and not assembled by you?

Yep that cable came with the Aerpro kit

SWC control receiver plugs into Airpro module and the Airpro plugs into headunit?

Yep, as per this photo (i unhooked it slightly before taking photo)




Reading the instructions it talks about a yellow wire, which is the wireless receiving antenna, I reckon in your case its the grey wire, disregard what I said previously said in my last post about the grey wire, as I cant see a yellow one, you need to straighten this out and place it close to the SWC. The red LED in the receiver most likely is lit when it is receiving signals from the controls. Place the SWC controls close to the grey wire and see what happens.

Yep straightened that out and when i press buttons on the actual steering wheel controls, the little LED lights up so it is receiving a signal.

However, again, the "Steering Wheel Controls" menu is greyed out on the head unit. I suspect its incompatible :(
 
OK, the SWC and receiver are good.

What is the model of the Airpro unit, i cant quite make it out from the Pic I just need to get a clearer picture of what it actually does.

Page 65 of your HU manual states for Steering Wheel control you need to select either with or without adapter, have you tried either setting??

Also look at this www.youtube.com/watch?v=1fxjrM-_LVo

You need to turn off the Source ie radio etc before programming SWC
 
Last edited:
Got it sorted :)

So I didnt have the handbrake on as I had it down so i could rest the head unit on it whilst i had it out of the dash.

Once that was on, "Steering Wheel Controls" was enabled and I selected "Without Adapter" and then selected Japanese as the brand of car (only had Japanese and Korean).

Also the 3.5mm jack does not have to be plugged in. When it was the head unit couldn't "learn" the buttons from the controls.

So all sorted now.

Thanks Tas for your help
 
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