4L (2005-2015), A4/S4/RS4, A5/S5/RS5, A6/S6/RS6, A8/S8, Audi, B8 (2007-), C6 (2004-2011), D3 (2002-2009), Q7

Audi MMI 2G aux audio source activation and wiring

Audi MMI 2G aux audio source can be activated and after doing some wiring you can enjoy sound on your car audio system playing from your iPhone, iPod, notebook, mp3 player or any other source. It’s a cheap alternative for AMI (Audi Music Interface).

Tools

  • Diagnostic interface like VCDS, VAG-COM, VAS or any other that’s capable of performing coding and adaptation procedures.
  • audio wire with suitable connector (3,5mm jack is most popular)
  • 4 x “Repair Wire 0.5mm” part
  • cutters
  • ratchet crimping tool

Warning!

Performing this procedure may cause permanent damage to your car.
Do this at your own risk!
We are not responsible for any loss or damage.

Preparation

  • You car need to have MMI 2G system. Check your Multi Media Interface version.
    Check this article: Audi navigation systems – MMI RNS BNS RMC differences.
  • Your sound system version have to be standard. This procedure will not work on Bose or Bang&Olufsen sound systems.
  • Your Audi MMI 2G head unit must be equipped with green FBAS connector. If your car is not equipped with rear view camera or TV Tuner, you probably don’t have aux-ready head unit.
  • Make sure that your Audi Multi Media Interface 2G software version is up to date. In some older versions you won’t have access to hidden green menu or it will have less options then described. Read article MMI 2G software update to version 5570.
  • Hidden menu must be enabled. Check this article: Enable MMI hidden green menu (2G, 3G, 3G+).
  • First connect diagnostic interface to the OBD2 port, then turn the ignition on.

Audi MMI 2G aux wiring for standard audio amplifier

  1. Locate your audio amplifier. It’s usually hidden in the trunk or under the floor, on the left side.
  2. Find 32-pin conncetor and disconnect it from the amplifier. It should be labeled as T32h.
  3. Locate pins no. 24, 26, 29, 31 on the connector. They should be empty. You have to wire those pins for left and right audio signals.
Audi DSP T32h connector
Audi DSP T32h connector

Audi MMI 2G aux coding for standard audio amplifier

  1. Connect with module 47 – Sound System.
  2. Choose procedure 07 – Coding.
  3. Read original coding (e.g. 0000023). Write down this number.
  4. Add 3 to second to last digit of original coding (e.g. 0000053).
  5. Enter and save new coding.
  6. Exit.

Audi MMI 2G aux activation in hidden green menu

  1. Turn key into II position and wait for the MMI 2G system to start. You can also use keyless buttons.
  2. Press and hold buttons SETUP and CAR.
  3. After couple of seconds hidden green menu will appear. You can now release the buttons.
  4. Navigate to DIAG SETTINGAPK 0x01, 0x0B, 0x0C.
  5. Scroll, find and enable Stereo Aux In on the list.
  6. Scroll down to Accept Changes and confirm.
  7. Press RETURN button multiple times to exit hidden menu.
  8. Press MEDIA or CD/TV button, then press top-right soft button labeled as Source and check for AUX on the sources list.

32 thoughts on “Audi MMI 2G aux audio source activation and wiring

  • can you help me pls how can i put aux on my audi a8L 2006 model.
    i have bosse system and dont have any place to put aux cablle can you help me for this??

    thnx

    • Please notice that this procedure most likely will not work for Bose or B&O sound systems!
      If you’re looking for a good place for your AUX port, try under the armrest or in the glovebox.

  • Hello i have a problem. I do it all settings. But i have in the source option still CD but no Aux. In the hidden menu is the Aux actived. Please help me.

  • Question, do I have to do both things?

    Audi MMI 2G aux coding for standard audio amplifier
    Audi MMI 2G aux activation in hidden green menu

    Or one of them? (I can access the hidden green screen menu)

  • Hi Mr fix, what’s the easiest way for me to install aux? I have a a6 4f 2008, with mmi 2g high, I got a 6cd changer in the glove, no rear view camera, is it still to do something with the amplifier in the trunk? Or with a plug and play cable in the cd changer? I got the aux from the hidden menu, so that’s available

  • According to @mr-fix.info on last replay to @Kenneth:
    – If I understand true, can I also use conector same connector T32h like in trunk?
    – I have CD changer, but no rear camera and no TV

    Thanks, BR

  • I have been able to enable the AUX in hidden menu and shows on the media source as shown above. However, I have tried to enable in the Amplifier module-47 but it will not accept.
    code number is 030001 but will not accept 030031 as you indicate and Aux does not work.

    Any advice please.

    Thanks

    • Hi Dave.
      I have the same problem as you. Did you find a solution? Any help would be appreciated.
      Regards, Greg

  • pins no. 24, 26, 29, 31 which pin is + and -?

    I activate AUX in green menu and added 3 in module 47.
    In VCDS that option is in the roll list and is named Analog AUX.

    So I can chose AUX in my MMI 2g+, connected left+ to pin 26 and right + to 24 and L and R – to pin 29 and 31, wired together.

    And NO sound.

    Whats wrong?

  • Hi, thank you so much for your tips. Is there a way to do the same thing for mmi 2g high with b&o amps ?
    I wonder if there is another way than investing on a AMI retrofit kit…

  • I can’t access the hidden menu, do I need to use VAG COM first ?
    Audi MMI 2G aux coding for standard audio amplifier

    Connect with module 47 – Sound System.
    Choose procedure 07 – Coding.
    Read original coding (e.g. 0000023). Write down this number.
    Add 3 to second to last digit of original coding (e.g. 0000053).
    Enter and save new coding.
    Exit.

    I have version 0260 and HW70.
    Only available sources are CD and MP3 (SD cards)
    2006 A3

    Thanks

  • Hi.

    I have the same problem as Dave, whose question you didnt respond to, except my stored value is 020001:
    I have been able to enable the AUX in hidden menu and shows on the media source as shown above. However, I have tried to enable in the Amplifier module-47 but it will not accept.
    code number is 020001 but will not accept 020031 as you indicate and Aux does not work.

    Any advice please.

    Thanks

  • Mr. Fix,

    I hope you can fix it! I have 2006 Audi A8L 2G mmi. I installed an mmi 2g interface to my factory mmi control module. So I’m able to get video from my phone to my screen from my Mirabox but no audio. Do l need to enable the auxiliary in order for the audio to work?

  • Hi, very great tips. My car is audi a6 c6 2006. MMI version 5150. I did coding, and enabled aux in green menu.
    I have some questions:
    1. In a trunk I have Bose amplifier which has big 32 pin connection. Tried to add wires to pins, but still no sound. Do this tutorial works for Bose amplifier?

  • Good afternoon
    And sought information in my country, worse is practically zero.
    I have a AUDI A6 2009, has TV and reader for 6 CDs and I think it’s MMI 2G. Is there any way to put you back camera?
    can you help me .
    Thank you very much in advance

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