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Thread: Controller unlocker: Convert Seed to key fail

  1. 01-02-2025 #1
    rebindiag
    rebindiag is offline
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    Jul 2023
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    Unhappy Controller unlocker: Convert Seed to key fail

    Hi all
    please any solution for this fail(Controller unlocker: Convert Seed to key fail) as now the car ECU not respond now ?the car is VW jetta 2020 and SIMOS 18.10 ECM.,,,

    MPVI 2

    thank you
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  2. 01-02-2025 #2
    aaronc7
    aaronc7 is offline
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    Is this car by chance tuned on Cobb or ecutek? They change the seed key logic to lock the ECU and prevent flashing over. If so then you'll need one of those tools to flash back to stock first.

    Separately after each unsuccessful seed key attempt there's a time out that increases each time. You just have to wait it out and try again later.
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