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Thread: 2019 300C 5.7 ZF8 Can't read trans

  1. #1

    2019 300C 5.7 ZF8 Can't read trans

    Trying to read the trans...engine reads and writes fine but trans fails with "unlocker x35 invalid key". Also fighting logger issues but that belongs elsewhere. Anyone have a solution or ideas?

  2. #2
    Tuner in Training
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    Mar 2020
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    Quote Originally Posted by UMSTuning View Post
    Trying to read the trans...engine reads and writes fine but trans fails with "unlocker x35 invalid key". Also fighting logger issues but that belongs elsewhere. Anyone have a solution or ideas?
    The only time I have encountered this error I was able to reboot my laptop and reconnect and I never received it again.

  3. #3
    Are you online? the 2019 would need internet to write trans. it might not say so but it does.