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What the is procedure to CODE A3 8P to single XENON straight SWAP from Halogen

Discussion in 'A3/S3/Sportback (8P Chassis)' started by thebedscompany, Feb 16, 2012.

  1. thebedscompany
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    thebedscompany Member

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    [Feb 16, 2012]
    Hi guys finally done the conversion today, from halogen headlamp to genuine Audi a3 single xenon headlamps, everything was plug and play no need for the kufatech harness as the car harness pins matched and clipped straight into the headlamps.
    However I have one problem lights work fine when car is not started once the car is started headlights flicker, i suppose i need to do some coding on the car have acess to the Ross-tech vagcom software but i don’t have a clue what to do with it or how on earth to code the car so any help will be grateful guys.

    will be post some pics of the conversion soon

    I step by step guide would be excellent
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  3. c_w
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    c_w Active Member

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    [Feb 16, 2012]
    Yes you need to code the headlights. People complain about aftermarket HID kits causing flickering/bulb warning - even the OEM stuff does until you code the car for xenons with VAGCOM/VCDS!! Sounds like you have the early single xenon type which is why they plug straight in (the bi-xenon has a 14-pin plug so needs a bit of re-wiring).

    Only one thing needs changing;

    Open Central Electrics module
    Click Long coding helper
    Byte 21 - change this to Single Xenon + Halogen Main Beam (12 from memory). There is a drop-down list of all the headlight types to make it really easy.

    When this is done the flickering when the engine is started will stop and the bulb warnings will go out too.
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  4. thebedscompany
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    thebedscompany Member

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    [Feb 16, 2012]
    THANK YOU SO MUCH FOR THE INFO C_W
    will ive it a try in the morning,
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  5. thebedscompany
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    thebedscompany Member

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    [Feb 24, 2012]
    thanks for the info all done!
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  6. L80EWY
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    L80EWY Member

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    [Feb 28, 2012]
    Just came to code mine and byte 21 is empty? Does this mean I can't code my xenons.. It's 2004
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  7. L80EWY
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    L80EWY Member

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