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Thread: 2013 A6 Allroad 4G C7 - xenon retrofit

  1. #11
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    What seats do you currently have in yours? The flat ones with no side support? or S-Line ones?
    A6 BiTdi Avant MTM
    Retrofitted: Full Led Headlights, DAB, Full Electric Seats, Power Tailgate, Surround View Cameras, Genuine RS6 Grille, RS6 Seats,Leather Door Armrests, Soft Close Doors, Rear Side Blinds, Electric Steering Column, LED Sill Plates, Ambient Lighting Pack, High Beam Assist, Eibach Springs, Led Roof Console, 4 Zone Climate, Rear Heated Seats, Head Up Display, Side assist, Alcantara Interior Retrim

  2. #12
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    Correct - the flat ones.

  3. #13
    Ross-Tech Employee Dana's Avatar
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    Paul, I wanted to make sure you didn't miss my comments in the other thread. Check your email for subject Ross-Tech label file 4H0-907-063-V1.CLB.

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  5. #14
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    So with that info and some time translating on-line, I was able to verify that most of the coding guidance from Kufatec document is sensible, but there are a few questions. I only translated the ~8 bytes relevant to lighting here. Below is a CSV dump from the excel table that I used to gather up all the info and some notes.

    Code:
    ADDRESS 09,   Part No SW: 4H0 907 063 BP    HW: 4H0 907 063 ,,,,,
    ,,,,HALOGEN,Bi-XENON,
    ,,,,01101001,00100110,
    BYTE,00,German,English Translation,69,26,
    Bit ,0,Abblendlicht als Halogen-Scheinwerfer verbaut,Dipped beam installed as a halogen headlamp,1,0,
    Bit ,1,Abblendlicht als Xenon-Scheinwerfer verbaut,Low beam installed as a xenon headlamp,0,1,
    Bit ,2,Fernlicht uber Umschalter/Shutter fur Abblendlicht/Xenon verbaut,High beam via switch / dipped-beam shutter / xenon installed,0,1,
    Bit ,3,Fernlicht als separate Halogen-Scheinwerfer verbaut,High beam installed as a separate halogen headlights,1,0,
    Bit ,4,Such/Flutlichtscheinwerfer verbaut,Search / Floodlight installed,0,0,
    Bit ,5,Nebelscheinwerfer (NSW) verbaut,Fog lights (Nasty Soggy Weather) installed ;-),1,1,
    Bit ,6,Ausgang Tagfahrlicht (TFL1) als Tagfahrlicht aktiv,Light output (TFL1) active as daytime running light,1,0,
    Bit ,7,-,-,0,0,
    ,,,,,,
    ,,,,HALOGEN,Bi-XENON,
    ,,,,00000000,00100000,
    BYTE,02,German,English Translation,00,20,
    Bit ,0,Ausgang Fernlicht NICHT als Tagfahrlicht aktiv (00),High beam output NOT active as daytime running light (00),0,0,
    Bit ,1,Ausgang Fernlicht NICHT als Tagfahrlicht aktiv (00),High beam output NOT active as daytime running light (00),0,0,
    Bit ,2,Ausgang Abblendlicht als Tagfahrlicht aktiv/verbaut,Output dipped beam as daytime running lights active,0,0,
    Bit ,3,Ausgang Nebelschweinwerfer als Tagfahrlicht aktiv/verbaut ,Foglight output as daytime running lights active,0,0,
    Bit ,4,Ausgang Fern/Standlicht als LED Tagfahrlicht aktiv/verbaut,Remote / parking light output active as LED DRL,0,0,
    Bit ,5,Ausgang Seitenmarkierungdleucten (SML) als Tagfahrlicht aktiv,Output side marker lights (SML) active as DRL,0,1,
    Bit ,6,Standlicht vorne aktive bei Tagfahlicht aktiv (PR-8K1),Front parking light active active with daylighting (PR-8K1),0,0,
    Bit ,7,Standlicht hinten aktive bei Tagfahlicht aktiv (PR-8K1),Rear parking light active active with daylighting (PR-8K1),0,0,
    ,,,,,,
    ,,,,HALOGEN,Bi-XENON,
    ,,,,10000000,10001001,
    BYTE,04,German,English Translation,80,89,
    Bit ,0,Abbiegelicht uber Nebelscheinwerfer bei Lenkeinschlag active (8EX/8EY),Corner light via fog lights with steering active (8EX/8EY),0,1,
    Bit ,1,Abschaltung Nebelscheinwerfer bei fernlicht aktiv (PR-B34/35),Shutdown Fog lamp with high beam active,0,0,
    Bit ,2,Abschaltung Nebelschlussleuchten bei fernlicht aktiv (PR-B34/35),Deactivation of rear fog lights with high beam active,0,0,
    Bit ,3,Statisches Kurvenlicht aktiv (PR-8EX),Static cornering light active (PR-8EX),0,1,presumably this applies to 8BP too
    Bit ,4,Einstellung/Anpassung Lichtverteilung uber MMI (PR-8Q7/8Q8),Adjustment of light distribution via MMI (PR-8Q7 / 8Q8),0,0,
    Bit ,5,Dauerfahrlicht fur Versehrtenfahrzeuge aktiv,Permanent running lights for disabled vehicles active,0,0,
    Bit ,6,Einstellung/Anpassung Touristenlosung uber MMI (PR-8BP+8Q7/8Q8),Adjusting tourist mode via MMI (PR-8BP + 8Q7 / 8Q8),0,0,
    Bit ,7,Funktion Nebellicht aktiv/verbaut (PR-8Q3),Fog light active / built-in function (PR-8Q3),1,1,weird - why fog-light related to 8Q3 ?
    ,,,,,,
    ,,,,10100111,10011111,
    BYTE,06,German,English Translation,A7,9F,
    Bit ,0,Assistenzfahrlicht aktiv (nur mit Regen/Lichtsensor),Assistance running light active (only with rain / light sensor),1,0,
    Bit ,1,Coming-Home aktiv,Coming-Home active,1,0,
    Bit ,2,Leaving-Home aktiv,Leaving Home active,1,0,
    Bit ,3,Coming/Leaving-Home aktiv mit Seitenmarkierungs aktiv,Coming / Leaving-Home active with side-lights active,0,0,
    Bit ,4,Coming/Leaving-Home aktiv mit Abblendlicht aktiv,Coming / Leaving Home active with low beam active,0,0,
    Bit ,5,Coming/Leaving-Home aktiv mit Nebelscheinwerfern aktiv,Coming / Leaving Home active with fog lights,1,1,
    Bit ,6,Coming/Leaving-Home ohne Regen/Lichtsensor aktiv,Coming / Leaving home without rain / light sensor active,0,0,
    Bit ,7,Coming/Leaving-Home aktiv Steuerung uber Fahrertur aktiv,Coming / Leaving Home active control via driver door active,1,0,
    ,,,,,,
    ,,,,01011111,00011101,
    BYTE,14,German,English Translation,5F,1D,
    Bit ,0,Unterbrechungs/Lastuberwachung Abblendicht aktiv,Interruption / load monitoring Low beam active,1,1,
    Bit ,1,Unterbrechungs/Lastuberwachung Fernlicht aktiv,Interruption / load monitoring High beam active,1,0,
    Bit ,2,Unterbrechungs/Lastuberwachung Nebellicht aktiv ,Interruption / load monitoring Fog light active,1,1,
    Bit ,3,Unterbrechungs/Lastuberwachung Blinker aktiv ,Interruption / load monitoring Indicator active,1,1,
    Bit ,4,Unterbrechungs/Lastuberwachung Standlicht aktiv ,Interruption / load monitoring Parking light active,1,1,
    Bit ,5,Unterbrechungs/Lastuberwachung Seitenmarkierungs aktiv ,Interruption / load monitoring for side marker lights active,0,0,US only
    Bit ,6,Unterbrechungs/Lastuberwachung Tagfahrlicht aktiv ,Interruption / load monitoring Daytime running lights active,1,0,
    Bit ,7,Unterbrechungs/Lastuberwachung seitliche blinker active,Interruption / load monitoring side indicators active,0,0,
    ,,,,,,
    ,,,,01011111,00001100,
    BYTE,15,German,English Translation,5F,0C,
    Bit ,0,Dimmung auf Nennspannung Abblendlicht aktiv,Dimming to nominal voltage dipped beam active,1,0,
    Bit ,1,Dimmung auf Nennspannung Fernlicht aktiv,Dimming to rated voltage High beam active,1,0,
    Bit ,2,Dimmung auf Nennspannung Nebellicht aktiv ,Dimming to nominal voltage Fog light active,1,1,
    Bit ,3,Dimmung auf Nennspannung Blinker aktiv ,Dimming to nominal voltage indicator active,1,1,
    Bit ,4,Dimmung auf Nennspannung Standlicht aktiv ,Dimming at rated voltage Parking light active,1,0,
    Bit ,5,Dimmung auf Nennspannung Seitenmarkierung aktiv ,Dimming to rated voltage Side marking lamp active,0,0,
    Bit ,6,Dimmung auf Nennspannung Tagfahrlicht aktiv,Dimming to nominal voltage Daytime running lights active,1,0,
    Bit ,7,Dimmung auf Nennspannung seitliche blinker aktiv ,Dimming at rated voltage side turn signal active,0,0,
    ,,,,,,
    ,,,,01000000,01100000,
    BYTE,27,German,English Translation,40,60,
    Bit ,0,-,-,0,0,
    Bit ,1,Ausgang tagfahrlicht 1 (TFL1) als Standlicht aktiv,Output daytime running light 1 (TFL1) active as parking light,0,0,
    Bit ,2,Versorgung Nebellicht uber Lichtmodul/Scheinwerfer aktiv (8EX/8EY),Supply fog light via light module / headlight active,0,0,
    Bit ,3,Ausgang tagfahrlicht 2 (TFL2) als Blinkeraktiv (8EY),Output daytime running light 2 (TFL2) as turn signal active,0,0,
    Bit ,4,Abschaltung tagfahrlicht bei aktiver Richtungsanzeige aktiv,Shutdown DRLs when direction indicator is active,0,0,
    Bit ,5,-,-,0,1,What is bit 5 ?
    Bit ,6,Ausgang standlicht links/rechts vertauscht,Output parking light left / right reversed,1,1,
    Bit ,7,-,-,0,0,
    ,,,,,,
    ,,,,00100000,00100001,
    BYTE,28,German,English Translation,20,21,
    Bit ,0,Funktion Allwetterlicht aktiv (8Q7/8Q8/8EX/8EY),All-weather light function active (8Q7 / 8Q8 / 8EX / 8EY),0,1,presumably this applies to 8BP too
    Bit ,1,Funktion Autobahnlicht aktiv (8EX/8EY  NICHT 8EX+B27),Function motorway light active (8EX / 8EY - NOT 8EX + B27),0,0,
    Bit ,2,Einstellung/Anpassung Touristenlosung uber MMI (8EX),Adjusting Tourist mode via MMI (8EX),0,0,
    Bit ,3,Einstellung/Anpassung Lichtverteilung uber MMI (8EX/8EY),Adjustment of light distribution via MMI (8EX / 8EY),0,0,
    Bit ,4,Ausfuhrung Scheinwerfer nach SAE-Norm (8EY),Execution of headlights according to SAE standard (8EY),0,0,
    Bit ,5,Adaptive Light Function (AFS) nur bei Lichtdrehschalter (LDS) in Auto-Stellung aktive,Adaptive Light Function (AFS) active only at light rotary switch in auto-position,1,1,
    Bit ,6,Funktion / Nachlauf fur Ausenbeleuchtung aktiv (standard),Function for outdoor lighting active (standard),0,0,
    Bit ,7,-,-,0,0,
    ,,,,,,
    ,,,,,,
    ,,Some Relevant PR Codes ,,,,
    ,,"1D9 = Trailer hitch, electrically folding",,,,
    ,,1N3 = Speed-related variable steering assist (Servotronic),,,,
    ,,1N7 = Dynamic steering,,,,
    ,,1N8 = Power steering (dynamic steering),,,,
    ,,7G9 = Interface for localization assistant,,,,
    ,,7I0 = Vehicle tracking system,,,,
    ,,7L8 = Start/stop system with regenerative braking,,,,
    ,,8BD = Halogen headlight,,,,
    ,,8BP = Bi-functional headlight with gas discharge lamp,,,,
    ,,"8EH = Bi-functional headlight with gas discharge lamp, for driving on the right(US design)",,,,
    ,,8EX = LED headlights,,,,
    ,,"8EY = LED headlights, US design",,,,
    ,,8K1 = Separate daytime running lights,,,,
    ,,8K2 = Separate daytime running lights --NAR--,,,,
    ,,8K4 = Separate daytime running lights NAR,,,,
    ,,8N2 = Windshield wiper intermittent control infinitely variable,,,,
    ,,8N7 = Windshield wiper intermittent control with light/rain sensor,,,,
    ,,8Q3 = Automatic headlight-range adjustment dynamic (self-adjusting while driving),,,,
    ,,8Q4 = Headlamp range adjustment with fixed bending light,,,,
    ,,8Q7 = Headlight-range adjustment,,,,
    ,,8Q8 = Headlight range adjustment,,,,
    ,,8X1 = Headlight washer system,,,,
    ,,AV0 = Driving on the left,,,,
    ,,B27 = Type approval country South Korea,,,,
    ,,B34 = Legal requirements USA,,,,
    ,,B35 = Legal requirements Canada,,,,
    ,,"FN0 = ""S"" variant",,,,
    ,,G1F = 8-speed automatic transmission,,,,
    ,,G1G = 8-speed automatic transmission for four-wheel drive vehicle,,,,
    ,,KF0 = Coding for trailer hitch,,,,
    ,,KF2 = Coding for trailer hitch,,,,
    ,,KF5 = Coding for trailer hitch,,,,
    ,,KF6 = Coding for trailer hitch,,,,
    ,,KF7 = Coding for trailer hitch,,,,
    ,,L0R = Right-hand drive vehicle,,,,
    ,,TC8 = 4-cylinder gasoline engine 2.0 L unit 06H.K,,,,
    ,,QZ7 = Power steering,,,,
    ,,VC1 = Remote-controlled garage door opener,,,,
    ,,VC2 = Remote-controlled garage door opener,,,,

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  7. #15
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    So taking these one byte at a time:

    Byte 00 - seems to check out ok

    Byte 02 - I didn't document all options for bits 0 & 1 yet.

    Byte 04 - Bit zero references that option as 8EX/8EY but this seems relevant for 8BP (bi-xenon) as well. Bit three is in the same category. I also don't understand why bit 7 seemingly associates foglight function with 8Q3 (AAS) function.

    Byte 06 - Had I taken the Kufatec codes at face value this would have disabled coming/leaving home light functions. Also not sure what the "Assistenzfahrlicht" is referenced in bit 0 - translation to 'assistance running light' is not clear for me.

    Byte 14 - Seems ok

    Byte 15 - Is my translation correct here - is this dimming/clamping the bulb voltage to nominal 12V ? Surely the conventional/halogen lights would burn brighter with that feature turned off with a running engine that produces something closer to 14V, or maybe I am over-thinking that !

    Byte 27 - Bit 5 is undocumented in German as well, so this does not align with Kufatec.

    Byte 28 - Bit 0 is yet another fog-light / all-weather lamp item and it seems like that is relevant for 8BP xenons. For Bit 5, I assume the 'AFS' function is referencing the way that lights are turned on/off automatically with light sensor - this is nothing to do with whizzy adaptive lights for going round corners.
    Last edited by nugentp; 01-09-2019 at 02:56 AM.

  8. #16
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    Quote Originally Posted by nugentp View Post
    Byte 15 - Is my translation correct here - is this dimming/clamping the bulb voltage to nominal 12V ? Surely the conventional/halogen lights would burn brighter with that feature turned off with a running engine that produces something closer to 14V, or maybe I am over-thinking that !
    I will have finished the translation of the German V1 info into English by the end of this week, but meantime I did have a play with Byte 15 and the halogen lamps. They do indeed get noticeably brighter when you disable these 'dimming' bits. Amazingly simple improvement when you know how - I suppose the only benefit of the dimming feature is longer bulb life but its good to confirm this stuff for the greater good !

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  10. #17
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    Quote Originally Posted by nugentp View Post
    I will have finished the translation of the German V1 info into English by the end of this week, but meantime I did have a play with Byte 15 and the halogen lamps. They do indeed get noticeably brighter when you disable these 'dimming' bits. Amazingly simple improvement when you know how - I suppose the only benefit of the dimming feature is longer bulb life but its good to confirm this stuff for the greater good !
    @nugentp,
    Thanks for the research into this, as a halogen bulb user I would love to know if they are dimmed and if that could be turned off to get the brighter light without any other issues. My biggest regret was not speccing xenon lights!

  11. #18
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    There is noticeably more light when you disable the dimming bits on the halogen bulbs. Had no problems after selecting that option.

    I also upgraded the OE bulbs to proper (made in Germany) OSRAM night-breaker items which make things noticeably better. These are just stop-gap measures for doing the XENON upgrade of course (which is on my to-do list for February).

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  13. #19
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    So - finally an update. Installed the Kufatec looms and Hella OE bi-xenons with the LED DRLs yesterday and all happily working. Its not a trivial job (bumper off to get to headlight fixings) for sure, but the hard yards are done. Here is a summary of the CODING at ADDRESS 09.

    BYTE 00 = 0x26
    BYTE 02 = 0x20
    BYTE 04 = 0x88
    BYTE 14 = 0x1D
    BYTE 15 = 0x0C
    BYTE 28 = 0x21

    A few notes - This C7 allroad is RHD (UK) model. The two looms from Kufatec assumes LHD so you have to swap the pins for the height levelling at the multi-pin connector. This is because the looms are designed to exit the A-pillar fusebox on the left/driver side of LHD vehicle. For RHD, you install from the right/driver side and so the short loom cables are for the RIGHT side.

    One voyage of discovery along the way was that after disconnecting the battery (in the boot/trunk under the spare wheel) - you need a battery charger at the engine bay terminals to allow the tailgate to be opened - that had me scratching my head for a moment wondering how to get to the battery again !

    Kufatec instructions said to code BYTE06 as 0x9F but that conflicts with my coming/leaving home settings so I left that alone. Kufatec also said to set bit 5 on BYTE27 (which is undocumented on VCDS 18.9) - I left that clear and everything worked. I did try setting it later and the fog-light operation stopped so I cleared that bit again - my advice is to not touch BYTE27.

    Thanks to Dana for posting a helpful English label file some months back after I translated a bunch of German stuff. I got there eventually.

    The most challenging part is running the cables from the wheel arch at the A-pillar into the fusebox. I found a length of ethernet cable was a great cable runner once I had nicked a hole in the A-pillar grommet and was relieved to see it appear on the cabin side. Top tip is a long enough cable so you can pull the two-wires from the power loom into the cabin and then pull the eight wires of the control loom from the cabin into the wheel arch. Its hard to explain unless you are looking at it. I can post photos later for anyone with more questions.

    Talking of questions - I have one - Kufatec suggests wiring up the automatic headlight level system controller (AHLS) to CANBUS pins at a module under the rear seat which isn't something I particularly want to do given the amount of stripping to get there.

    Q. Does anyone know where I can more easily connect to the correct CANBUS - it must link to J533 (hub for all the CAN busses) but I've not discovered where that is - anybody care to share some info (hoping its not the module under the seat that Kufatec shows) ?

    The OE schematics refer to T46a and TV41/TV42 but again I've not found where they are on the C7 chassis. The CANBus wire colours on the schematic are orange/grey and orange/brown - which makes it the EXTENDED bus - and I don't have any of the OE equipment which connects to that with options such as side assist, AFS, night vision. The front seat belt tensioners (J854 & J855) are using it so maybe thats another place to look.

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  15. #20
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    Quote Originally Posted by nugentp View Post
    Q. Does anyone know where I can more easily connect to the correct CANBUS - it must link to J533 (hub for all the CAN busses) but I've not discovered where that is - anybody care to share some info (hoping its not the module under the seat that Kufatec shows) ?
    that exactly where it is

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