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Thread: $0537 lly duramax

  1. #1
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    Default $0537 lly duramax

    Efi live from atp auto cal not working
    Error code $0537

  2. #2
    Diesel Forum Support Site Admin
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    From our error code list.

    **
    $0537 Controller is locked with a custom key.

    An attempt was made to read or program a controller that cannot be unlocked using the standard GM keys.

    If you know the key that was used to lock the controller, please use the unlock option in the EFILive software to unlock the controller before attempting to read or re-flash the controller again.
    **

    Has the ecm been tuned previously?

    Cheers
    Cindy


    Sent from my iPad using Tapatalk

  3. #3
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    Quote Originally Posted by cindy@efilive View Post
    From our error code list.

    **
    $0537 Controller is locked with a custom key.

    An attempt was made to read or program a controller that cannot be unlocked using the standard GM keys.

    If you know the key that was used to lock the controller, please use the unlock option in the EFILive software to unlock the controller before attempting to read or re-flash the controller again.
    **

    Has the ecm been tuned previously?

    Cheers
    Cindy


    Sent from my iPad using Tapatalk


    I belive the truck was previously tuned but I don't know by who
    Or what to do at this point

  4. #4
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    I believe the ecm was previously tuned because there was loose wires hanging off it bought it from the dealership can I bring it back to them and have them flash/ unlock it

  5. #5
    Forum tyhee Site Admin GMPX's Avatar
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    The dealership will not be able to unlock it either.
    There is probably a few people that can unlock ECM's, I can say that these guys do them but you do need to send your ECM to them.
    http://www.wait4meperformance.com/
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.


  6. #6
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    Can they flash it back will that unlock it

  7. #7
    Diesel Forum Support Site Admin
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    The answer to your question depends on how the controller was originally locked.

    If the controller was locked using EFILive's Auto-locking feature, then a full flash (which you could do) would unlock the controller. Did you attempt to read or flash the controller to get your $0537?

    If the controller was manually locked using a custom key, flashing over the top will not be sucessful. If manual locking was used, then there are 2 possible scenarios:

    If the key is generated by the tuner, and the tuner provides you the key you will be able to unlock the controller using that key.
    If the key is generated by FlashScan, then only FlashScan devices with the same License Number can be used to unlock the controller.

    If the controller is manually locked, and you either don't have the key, or know who's FlashScan was used to originally flash your ECM, your only option is a someone like wait4me (detailed earlier in this thread) who can use "brute force" to unlock the ECM.

    Cheers
    Cindy

  8. #8
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    I tried reading it and flashing it and still got the same results.
    Can I get a reman ecm and have it flashed to the truck then upload my tunes that way can't be without my truck need it for work daily

  9. #9
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    If I bring it to the dealership and try a full flash what are the chances they fry my ecm

  10. #10
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    Quote Originally Posted by Duramax23 View Post
    I tried reading it and flashing it and still got the same results.
    Can I get a reman ecm and have it flashed to the truck then upload my tunes that way can't be without my truck need it for work daily
    Yes you can do that.

    Quote Originally Posted by Duramax23 View Post
    If I bring it to the dealership and try a full flash what are the chances they fry my ecm
    The dealer, just like yourself will not have permission to flash the ECM unless you have the key.

    Cheers
    Cindy

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