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Thread: Determining presence of MOST bus

  1. #1
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    Question Determining presence of MOST bus

    When modules cannot be reached in a scan my default thought is to run an Optical Bus Diagnostic providing there isn't anther obvious reason.
    The majority of the diagnostics I've done have been on C6 and D3 and later, so it's almost automatic for me.

    Forgetting it's not ubiquitous, people respond "Uh... my car doesn't have that" when I've suggested running the procedure. <facepalm>

    Is there a way to determine MOST presence in a vehicle without physically looking or checking erWin ?
    The only pattern I've been able to determine is if Nav has an optical performance setting, and possibly the presence of 07 Control Head.

    Appreciate any input.


    2012 A8L 4.2 Oolong/Titanium. Premium, LED, Driver assist, Rear seat comfort, Dual pane, Alcantara, Panorama

  2. #2
    Ross-Tech Employee DrPeter's Avatar
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    Hi,

    Here is a 'basic' list of the VAG vehicles that may have a Fiber Optic BUS installed.

    - - Also looking at the Measuring Value Blocks(MVB) in the [19-CAN Gateway] controller for any reference to 'MOST-Databus' will be useful, for example the MVB-Group [002] in the Audi A6 (4F) .

    Audi -
    2011 --> Audi A1
    2013 --> Audi A3
    2008 --> Audi A4
    2008 --> Audi A5
    2005 --> Audi A6
    2011 --> Audi A7
    2003 --> Audi A8
    2012 --> Audi Q3
    2009 --> Audi Q5
    2007 --> Audi Q7

    Volkswagen -
    2014 --> e-Golf
    2013 --> Golf
    2011 --> Touareg


    Hope this helps,

    drpeter
    Last edited by DrPeter; 07-15-2014 at 12:15 PM.

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  4. #3
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    Thank you Dr, most helpful.


    2012 A8L 4.2 Oolong/Titanium. Premium, LED, Driver assist, Rear seat comfort, Dual pane, Alcantara, Panorama

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