SCT X4 Swapped tune now truck wont start !!URGENT!!

SCT X4 Swapped tune now truck wont start !!URGENT!!

This is a discussion on SCT X4 Swapped tune now truck wont start !!URGENT!! within the F150 Ecoboost Problems forums, part of the F150 Ecoboost Forum category; Updated the SCT device 3 days ago before I loaded the canned tune, ran that for a few days and decided I wanted to go ...

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Thread: SCT X4 Swapped tune now truck wont start !!URGENT!!

  1. #1
    Ecoboost Jr Member darianmacdonald's Avatar

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    SCT X4 Swapped tune now truck wont start !!URGENT!!

    Updated the SCT device 3 days ago before I loaded the canned tune, ran that for a few days and decided I wanted to go back to Ericks LET tune. So, I plugged it in and went about it and it seemed to load fine. An hour or so later I go to hop in and start my truck, nothing. So I panicked and immediately plugged in the tuner to return it to stock and it wouldn't let me. So I turn the key off and try again and the truck starts throwing messages like crazy and the tuner still wouldn't recognize that the key was turned oń so wouldn't let me return to stock. Tried to see if the tuner would read any codes and it gave me error code #21000. Can't even get ahold of SCT support as they are closed on weekends. Also tried disconnecting the battery and it didnt change anything. If anybody could give me any suggestions I would really appreciate it.
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

  2. #2
    Eco-Beast 2Canches's Avatar

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    Plug SCT back in. Go to vehicle settings. Or where you would read vehicle info. Is it married?

    Then go to code reader setting. What does it say?


    Sent from my silver iPad Air 1 in a http://www.red.org/en/ smart case using an app called Tapatalky
    http://www.leadingedgetuning.com 91 tune & 87 tow tune

    2015 5.sL0w
    XTR trim
    Flowmaster DBX muffler
    exit rear tire with CORSA twin tips
    Hellwig rear ani-sway bar
    2" lift all around
    truck is so fast I had to install SYPPO
    tow mirrors 😹😹😹

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    Eco-Beast 2Canches's Avatar

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    did you return to stock when switching tunes?


    Sent from my silver iPad Air 1 in a http://www.red.org/en/ smart case using an app called Tapatalky
    http://www.leadingedgetuning.com 91 tune & 87 tow tune

    2015 5.sL0w
    XTR trim
    Flowmaster DBX muffler
    exit rear tire with CORSA twin tips
    Hellwig rear ani-sway bar
    2" lift all around
    truck is so fast I had to install SYPPO
    tow mirrors 😹😹😹

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  5. #4
    Ecoboost Jr Member darianmacdonald's Avatar

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    Unfortunately the truck is parked somewhere else now I dont have access to it at the moment. However, I did return it to stock before swapping tunes. I have changed tunes probably 20 times and have never had an issue.
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

  6. #5
    Ecoboost Veteran kens fx4's Avatar

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    Sct has an emergency 24/7 hot line
    2013 FX4 Crew Cab EcoBoost ...
    AFE stage 2 , Mbrp off-road Down pipe , Mrbp dual exit exhaust , 170 thermostst , snow performance water/meth (50/50)
    R/X catch can ,LEADING EDGE tune. best run... 13.46 @100.57 1.832 60ft

  7. #6
    Ecoboost Jr Member darianmacdonald's Avatar

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    Quote Originally Posted by 2Canches View Post
    Plug SCT back in. Go to vehicle settings. Or where you would read vehicle info. Is it married?

    Then go to code reader setting. What does it say?


    Sent from my silver iPad Air 1 in a RED.org smart case using an app called Tapatalky
    The code reader setting gave me error code #21000 and #21301 the second time I tried.
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

  8. #7
    Ecoboost Jr Member darianmacdonald's Avatar

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    Quote Originally Posted by kens fx4 View Post
    Sct has an emergency 24/7 hot line
    Do you know where I can find that number? Cant see it on their site?
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

  9. #8
    Ecoboost Jr Member darianmacdonald's Avatar

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    Quote Originally Posted by darianmacdonald View Post
    Do you know where I can find that number? Cant see it on their site?
    Just found it. Thanks
    2Canches likes this.
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

  10. #9
    Ecoboost Jr Member darianmacdonald's Avatar

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    Quote Originally Posted by kens fx4 View Post
    Sct has an emergency 24/7 hot line
    Filled out the form for emergency support. However could not find a direct line?
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

  11. #10
    Ecoboost Jr Member darianmacdonald's Avatar

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    Quote Originally Posted by 2Canches View Post
    Plug SCT back in. Go to vehicle settings. Or where you would read vehicle info. Is it married?

    Then go to code reader setting. What does it say?


    Sent from my silver iPad Air 1 in a RED.org smart case using an app called Tapatalky
    Looked in device settings while plugged into computer and it says the device is currently married.
    2012 SCREW FX4 Tuxedo Black, AFE Stage 2 Cold air intake, Heartthrob cat-back exhaust system, Flowmaster tip, Daystar 2" level, LET Tuned, 35x12.50r18 Toyo Open Country MT, 18x9 Fuel Mavericks O offset

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