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Thread: Trade-in upgrade Hex-CAN to Hex-Net

  1. #11
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    Quote Originally Posted by Uwe View Post
    And you've had that interface for a bit more than 10 years now.

    If I tell you "You should upgrade to a HEX-NET" now, and we do end up successfully fixing this, you'll be annoyed that you spent money unnecessarily. So I suggest waiting at least until you get the car to see where we are then.

    -Uwe-
    Reviving this old thread..


    I tried to use my Hex-Can USB a few days ago on a recent Audi Q7 e-tron.

    I got messages like this on a few modules:

    Address 74: Chassis Control

    Interface not compatible.

    Please upgrade to a current Ross-Tech interface.
    And messages like these on a lot of modules:

    Faults Found:

    1122561 - Databus

    U1121 00 [008] - Missing Message

    [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
    I guess this is the limitiations mentioned under compatibility here:
    http://www.ross-tech.com/vag-com/old-interfaces/huc.php

    Just to be sure: This will not be fixed in a firmware update and I will need a new/current interface for that?
    Last edited by bjornb; 09-10-2018 at 12:55 PM.

  2. #12
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by bjornb View Post
    Just to be sure: This will not be fixed in a firmware update and I will need a new/current interface for that?
    Correct. There is no space left in the HEX+CAN's micro-controller for further enhancements. The 16 kB of space it has seemed like plenty back in 2004.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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