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Thread: Installing BilStein ClubSport - 2016 Audi TTS with MRC

  1. #11
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    Surprised: it was generating anything.

    I have an O scope and an old fashioned analog mm, will try that. The shocks are completely out of the car, this whole exercise is due the grayed out adaption menus to turn off the MRC, for now its just PITA BEEEP; you may continue to drive: thank you computer.

  2. #12
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    Quote Originally Posted by mossback View Post
    Surprised: it was generating anything.

    I have an O scope and an old fashioned analog mm, will try that. The shocks are completely out of the car, this whole exercise is due the grayed out adaption menus to turn off the MRC, for now its just PITA BEEEP; you may continue to drive: thank you computer.
    mossback: OK, if all the measurement were taken with an open circuited transducer, then you might not have gotten any meaningful results.

    Again. I'm by no means an expert on these shocks, but most electrical current generating devices get fairly cranky when they are connected to high impedance loads (like an open circuit). What trypically happens is that they try to generate electrical current, but the high impedance stops this current from flowing. As a result of the electrical "blockage" (caused by the high resistance at the transducer output terminals), the voltage of the transducer rises quickly - in an attempt to make the current flow.

    This situation generally causes one of two things to happen: Either the high voltage causes the coil insulation between windings to break-down, or (more likely with shocks), the increased voltage causes the magnetic material in the transducer to saturate - causing nonsensical readings.

    The same thing happens to voltage transducers if the connected load is too low - the electrical current rises quickly in an attempt to generate the necessary voltage and at some point, either a component in the transducer is fried, or the transducer circuit self limits the maximum current flow

    So, please use a shunt resistor!

    Don
    Last edited by DV52; 06-06-2017 at 09:31 PM.
    VW Golf MkVII (103TSI) my13

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  4. #13
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    Quote Originally Posted by DV52 View Post
    mossback: OK, if all the measurement were taken with an open circuited transducer, then you might not have gotten any meaningful results.

    Again. I'm by no means an expert on these shocks, but most electrical current generating devices get fairly cranky when they are connected to high impedance loads (like an open circuit). What trypically happens is that they try to generate electrical current, but the high impedance stops this current from flowing. As a result of the electrical "blockage" (caused by the high resistance at the transducer output terminals), the voltage of the transducer rises quickly - in an attempt to make the current flow.

    This situation generally causes one of two things to happen: Either the high voltage causes the coil insulation between windings to break-down, or (more likely with shocks), the increased voltage causes the magnetic material in the transducer to saturate - causing nonsensical readings.

    The same thing happens to voltage transducers if the connected load is too low - the electrical current rises quickly in an attempt to generate the necessary voltage and at some point, either a component in the transducer is fried, or the transducer circuit self limits the maximum current flow

    So, please use a shunt resistor!

    Don
    Still no use, can't find a way to disable MRC, bought and tried a set of the KW DDC\MRC delete devices: works for about a mile, then the same error pops up about suspension. Also with the system reporting good health, the VCDS is not able to log into 14, to make any changes to the MRC. Does anyone have a security code to see the "hidden" menu?

  5. #14
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    have you tried to disconect 14 physically, code out 14 from gateway, code 55 to remove so AFS still gets data also code out from 5F?

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