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Thread: Mic not working after MIB2.5 upgrade

  1. #1
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    Mic not working after MIB2.5 upgrade

    Hi all,

    recently retrofitted AID on a 2015 Golf R along with MIB2.5
    5NA 035 020A and the 9.2 screen

    after the usual CP removal and coding, everything works fine apart from the Mic

    I have a full scan of the car on my computer which is at home howeverm generally speaking, is there a wiring mod needed for the Mic?
    the phone essentially works, we can pair phones / can hear the dial tone and use A2DP but VCDS shows "mic / open to short ground"

    the car does have DynAudio

    As I said, i do have a full scan but not on me! (will post later) just asking for some guidance as I know some of the MK7 retrofit guys like to keep knowledge to themselves!

    The Mic worked fine before which leads me to believe a wiring mod may be needed?

    any help would be appreciated

  2. #2
    Verified VCDS User Spacewalker's Avatar
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    you can simple compare drawing in ELSA , but I dont think is a wire changes
    Also check MIC p/n in Etka
    I move from DP GEN 1 5G0 to GEN 2 3Q0 with straight swap
    Measure MIC output on old one when MIC is connected , and do this same with new one
    HOT HOT HOT VW Touran 2005 with ACC HOT HOT HOT

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  4. #3
    Verified VCDS User PetrolDave's Avatar
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    Check mic polarity - IIRC they are electret microphones which work best (at all?) when connected with the correct polarity.

  5. #4
    Verified VCDS User Spacewalker's Avatar
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    Quote Originally Posted by PetrolDave View Post
    Check mic polarity - IIRC they are electret microphones which work best (at all?) when connected with the correct polarity.
    AGREE, but with older MIB all was good, he not touch any wires so far
    HOT HOT HOT VW Touran 2005 with ACC HOT HOT HOT

  6. #5
    Verified VCDS User PetrolDave's Avatar
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    Quote Originally Posted by Spacewalker View Post
    AGREE, but with older MIB all was good, he not touch any wires so far
    Is the polarity the same between MIB1, MIB2 & MIB2.5? Just worth checking IMHO.

    Mic polarity was a cause of many similar problems on earlier VAG infotainment systems.

  7. #6
    Verified VCDS User Spacewalker's Avatar
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    Quote Originally Posted by PetrolDave View Post
    Is the polarity the same between MIB1, MIB2 & MIB2.5? Just worth checking IMHO.

    Mic polarity was a cause of many similar problems on earlier VAG infotainment systems.
    MIB 1 and MIB 2 - yes - 100% , I swap in my car DVD P&P
    HOT HOT HOT VW Touran 2005 with ACC HOT HOT HOT

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