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Thread: Audi steering wheel controls

  1. #1
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    Audi steering wheel controls

    Has anyone managed to successfully implement steering wheel controls in an Audi with can-bus, using something like the Joycon? I spent some time searching, and found a couple posts for VW/Audi, but nothing indicating anyone had managed to implement them.

    While not the end of the world, I would like to be able to use them.

    Thanks.

  2. #2
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    You could disconnect the buttons from the Canbus system and connect it to the joycon or you could listen to the canbus and have that control things.

  3. #3
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    Quote Originally Posted by that_kid View Post
    You could disconnect the buttons from the Canbus system and connect it to the joycon or you could listen to the canbus and have that control things.
    What I am looking into first, is to see if one of the adapters available to retain steering wheel controls with an aftermarket head unit can be used. I think they plug into the existing harness, intercept the canbus signal and convert it to something that can be read by aftermarket head unit's.

  4. #4
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    That should work. I saw a post where someone used a Pac steering wheel adapter with a joycon just in the way you described.

  5. #5
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    Picked up a Joycon, but, while it worked for a minute. For some reason it's now quit working, the test to see if its faulty came back negative. So I know that is good, but I am not sure why all of a sudden it is not recognizing any input from my steering wheel. Really odd.

  6. #6
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    CarPC JoyCon Exd supports AUDI '99-'04 (LIN, not CAN).
    It generates the LIN signal for original equipment.
    You can get the LIN signal wire from the clockspring.

    If you installed an aftermarket head unit that is controlled by resistive controller(Sony, Panasonic),
    you can use BSGr(Button signal generator resistive) to control the aftermarket head unit.
    Then you can switch between the aftermarket head unit and car pc like Windows applications.

  7. #7
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    I got it working again, it was actually something pretty simple. I have an aftermarket wiring harness that connects to the factory harness, and then provides resistive output to an aftermarket stereo. In order for it to work, you had to connect the steering wheel control (Joycon) first, before connecting it to the factory harness.

    Incredibly annoying at the time, when you are checking all the wiring and finding nothing wrong. But simple when you read the instructions that came with the wiring harnes!!

  8. #8
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    Still toying around with this to get everyhing working correctly via Joycon, I have the following buttons on the wheel (from left to right)

    1 - Jog scroll wheel - I have this set as track forward/back and clicking it in as play/pause
    2 - Mode button - Not programmed to anything
    3 - OEM BT button - Not programmed to anything, but I want to program this to start voice search
    4 - Jog scroll wheel - Volume up/down, click to Mute.

    Plugged into the factory harness I have a Connects2 unit that converts the CAN-BUS into Resisitive outputs, I then have a generic harness with 3 wires (Key 1, Key 2 and GROUND) that the Joycon is wired up to. I found that I had to combine the Key 1 and Key 2 together to get the Joycon to work. At the moment buttons 1 and 4 above work perfectly, but now that I have a bluetooth microphone I want to get button 3 working,

    Unfortunately I found that if I use one input on the Joycon, when pressing button 3, it reads the same resistance value as the Mute (clicking in button 4) regardless of where I adjust the input sensitivity. I had the idea that I could tie that button to input A (I currently have input B handling buttons 1 and 4) and by adjusting the sensitivity, it reads as a different value on a different input, essentially giving me that extra button to program. After firing up Joycon explorer, I map the button to Alt +V (no real reason, just testing), connect up both inputs, and it does not work. If I press button 3 it reads correctly, but both buttons 1 and 4 now no longer work (reading an entirely different value to what I have them mapped as). The second that I disconnect Input A, anything on Input B works fine again.

    I am not sure if having both inputs connected is screwing with the resistance that Input B is seeing, but not sure why Input A works perfectly well with both connected. The only thing I can think of is that the sensitivity on Input A is at it's maximum level, so picks up the resistance, but Input B is left at the default, and with the resistance being split across 2 inputs it's no longer reading it the same as with only one connected. Hence as soon as I disconnect Input A, Input B goes back to working fine. Does this sound about right?

    At the weekend I may toy around with it some more, ideally I want to get both the Mode and OEM BT buttons working, with the OEM BT button triggering the Nexus to open Voice Search, and the Mode button to do..... not sure yet, I don't know that I need it to do anything at this point.

    Any ideas? Tips? Thanks.

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