Is this my immobiliser box? Unlocking single plug ECU!

  1. Forum Section Moderator Joined: Aug 2006 Westgate on Sea/Bexley Posts: 17223 Series 1 Rallye
    #1
    Hello,

    As above, just trying to unlock my ECU before I remove the engine.

    I was told I had to remove the plugs from the black box (immobiliser) while the engine was running to unlock the ECU.

    I have done this and the car still works fine although it has a keypad immobiliser and I still need to put the code in before starting the car. Do I also need to unplug the keypad while the car is running?

    Help will be thanked

    Immobiliser box (I think)



    Keypad

  2. Saxperience Post Whore Joined: Aug 2008 East Devon Posts: 7472 Clio RS200 Cup, Twingo RS133, Triumph Street Tripl
    #2
    you've unplugged the wrong box, thats the Central locking control unit, that has two plugs on it, plug that back in and have another rummage around
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  3. Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.
    #3
    iirc if you have a keypad there is no immobiliser box.
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  4. Saxperience Post Whore Joined: Aug 2008 East Devon Posts: 7472 Clio RS200 Cup, Twingo RS133, Triumph Street Tripl
    #4
    Quote:
    Originally Posted by welshpug View Post
    iirc if you have a keypad there is no immobiliser box.
    sure it wasn't already unlocked? just couldn't find the plug?

    sometimes they can be a bitch to find tucked up right behind the dash, but the ones i've had with keypads all have had immob boxes.
  5. Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire
    #5
    You can unlock it buy just unplugging the ecu with the ignition on......
  6. Forum Section Moderator Joined: Aug 2006 Westgate on Sea/Bexley Posts: 17223 Series 1 Rallye
    #6
    Cheers jordy, only other box I can see is this one?

  7. Saxperience Forum Bum Joined: Sep 2011 Doncaster Posts: 2627 Fabia VRS, mk1 fiesta + some others
    #7
    ahhh i think i unplugged the central locking unit to!
    please post a picture of the immobiliser box when you find it.
  8. Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.
    #8
    Quote:
    Originally Posted by Dan-Subtle View Post
    Cheers jordy, only other box I can see is this one?

    http://i160.photobucket.com/albums/t...ps0475468a.jpg
    central locking relay.
  9. Forum Section Moderator Joined: Aug 2006 Westgate on Sea/Bexley Posts: 17223 Series 1 Rallye
    #9
    Cheers for the help lads, there's no other boxes under there.

    Any ideas on how to unlock the ECU?

    Would unplugging the actual immobiliser keypad not do the job?
  10. Banned Joined: May 2011 north london Posts: 1618 mk1 flat arch
    #10
    Mine was under my dash was a bit of a fucker to get to but it worked it should be in the passenger side and I believe it's clipped into place! There's only two methods to unlocking....

    Do what Tom said above and take the Ecu out while the ignitions on OR get it professional unlocked (I believe cam on here does it)
  11. Banned Joined: May 2011 north london Posts: 1618 mk1 flat arch
    #11
    Mine was under my dash was a bit of a fucker to get to but it worked it should be in the passenger side and I believe it's clipped into place! There's only two methods to unlocking....

    Do what Tom said above and take the Ecu out while the ignitions on OR get it professional unlocked (I believe cam on here does it)
  12. Frequent Poster Joined: Jan 2004 Denny United Kingdom (Scotland) Posts: 666 Ford focus 2.0 Saxo VTS
    #12
    as welshpug said turn on the car then remove the keypad
  13. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #13
    Unplugging the ecu with the car on can damage the ecu. It can short the pins out.

    Dan mate have a look for this
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  14. Forum Section Moderator Joined: Aug 2006 Westgate on Sea/Bexley Posts: 17223 Series 1 Rallye
    #14
    cheers for the reply lads.

    had the whole dash off and there was no other black boxes.

    i ended up unplugging the ecu while the car was running, may not be the correct way and may not be unlocked but too late now as ecu is off and half the loom is removed from the engine.

    Cheers for all the help anyway lads.
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  15. Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.
    #15
    In my derv dan, I had no other box (like you have discovered). I just unplugged the keypad whilst the engine was running and that unlocked it. Never plugged it back in.
  16. Forum Section Moderator Joined: Aug 2006 Westgate on Sea/Bexley Posts: 17223 Series 1 Rallye
    #16
    Shame, I've now unplugged the ECU whilst the engine was running and have removed half of the loom. Oh well live and learn .

    Cheers Ross, would thank but think I'm all thanked up for this thread.