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Thread: A4/B9 Reverse Mirror Tilt coding

  1. #11
    Verified VCDS User DJAlix's Avatar
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    Have fixed a load of cars destroyed by that application but never coded with it, so have no idea to be honest. If it is possible I would imagine its only via their credit "apps".
    VAG Car Coding
    Adaptation | Coding | Diagnostic | Retrofit - London, United Kingdom

    Authorised VW Group Services Provider and Independent Repairer
    @vagcarcoding

  2. #12
    Verified VCDS User hadez16's Avatar
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    It is not true that it is a mixture of TXT coding and long code. The according TXT coding which can be found in the interweb is just an equivalent to Bit 2 in Byte 4 of unit 52.
    In the meantime we should all know that TXT coding of a specific other piece of software is just the experimental labeling without Byte/Bit combination addressed.

    Besides, this issue is still not solved. There are a few things in the BCM2 (unit 46) regarding dipping mirrors:

    Byte 9 Bit 6 active (dipping_mirrors installed)

    Byte 34 Bit 4 active (bap mirror lowering at reverse gear default value = active)
    Anyone would like to try if this triggers the MMI menue entry?
    By the way, perhaps someone with mirror dipping from factory could post an Auto-Scan??

    Fatal EDIT: If really every B9 in the US has this option by factory, then my suggestions will propably not work as these bits are also not set in US cars....
    Last edited by hadez16; 03-07-2018 at 04:20 AM.

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  4. #13
    Verified VCDS User hadez16's Avatar
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    I really did some deep investigations as I have detailed information from two B9 where one has the dipping mirrors and the other does not. (confirmed by the persons who own them)

    I cannot find any bit or channel that differs and points to this function, besides the obvious bits in Unit 52.
    Can this still be a hidden adaptation channel because of some ASAM yingyang?
    Last edited by hadez16; 03-08-2018 at 02:17 AM.

  5. #14
    Verified VCDS User rlarsen's Avatar
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    Has this been tried (German site): http://vagdata.de/8w-a4/beifahrerspi...aertsfahrt-8w/ ??

    Code:
    [52 - Door Elect, Pass.]
    [Coding - 07] -> [Long Coding Helper] -> Byte 4
    Bit 2 - activate
    Bit 3 - activate
    Code:
    [09  Cent. Elect.]
    [Security Access - 16] - Code: 31347
    [Adaptation - 10]
    (17) Zugangskontrolle 2-Spiegelabsenkung bei Rueckwaertsfahrt  - activate
    Rene Larsen

    Audi A4 Avant 3.0 TDI quattro tiptronic MY2009 - sold
    VCDS 18.2.0
    (HEX-V2)

  6. #15
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    Any progress on this? Son has an A4 B9 (UK 2018 model) looking to activate mirror tilt.

    Rod

  7. #16
    Verified VCDS User hadez16's Avatar
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    Quote Originally Posted by rlarsen View Post
    Has this been tried (German site): http://vagdata.de/8w-a4/beifahrerspi...aertsfahrt-8w/ ??

    Code:
    [52 - Door Elect, Pass.]
    [Coding - 07] -> [Long Coding Helper] -> Byte 4
    Bit 2 - activate
    Bit 3 - activate
    Code:
    [09 – Cent. Elect.]
    [Security Access - 16] - Code: 31347
    [Adaptation - 10]
    (17) Zugangskontrolle 2-Spiegelabsenkung bei Rueckwaertsfahrt  - activate
    This adaptation channel does not exist! It is copied from B8 platform!

    Yet no progress. My hope is that this is caused by missing adaptation channels that might occur on later VCDS Versions.
    Again, I compared two B9, one with tilt and one without, and found no clue.

  8. #17
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    Hi folks,

    Are we any closer to cracking this with VCDS?

  9. #18
    Verified VCDS User hadez16's Avatar
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    In a german forum there are people who just changed the door units or even just the driver door unit (I'm not sure) in order to get this to work.
    Of course from a car who has it by stock.

    This would confirm that this feature only resides in software of the door units.

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  11. #19
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    Good morning. Update: my car has folding mirrors and I tried to recode in order to have this feature based on info I found in several Audi enthousiast sites. BUT, I realized that this feature can only work if the mirror selecton in driver's door is in passenger's mirror possition! If it is in center one, "0", nothing happens. I don't know if this feature was embeded already in my car and I don't remember if I let the new coding or reverted back either, sorry. I will check next week and come back. I just report this finding for all to check. Also there is an official video at youtube that describe how this can be set. Worth to try.
    Note: my car is a European one.
    Regards,
    John

  12. #20
    Verified VCDS User PetrolDave's Avatar
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    Quote Originally Posted by jpaudioa4 View Post
    I realized that this feature can only work if the mirror selection in driver's door is in passenger's mirror position!
    This is one of what I think are two silly "features" regarding the mirrors on my MQB platform Skoda Octavia 5E -

    1) as you have found, the mirror dip only works if the mirror switch is in the passenger position. AND if you don't have memory seats the mirror will NOT return to the same position so all need adjusting every time you use it - how crazy is that!

    2) the mirror heating is a separate latching position on the switch (which appears NOT to have a timer so can be left on) instead if being combined with the heated rear window (like on my B7 Audi, which had a timer so cannot be left on). At the very least this should be timer controlled and not a latching position on the switch IMHO.

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