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New key cut, immobiliser stuck on!

Discussion in 'A3/S3 Forum (8L Chassis)' started by GazzaA3, Jul 22, 2014.

  1. GazzaA3
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    GazzaA3 Member

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    [Jul 22, 2014]
    Got a new cut cut today after ordering a new blank,
    Fires up ignition fine, but immobiliser light flashing and cuts out engine within few seconds.
    Any ideas what's happened, it all worked before.
    Here is my broken key ImageUploadedByTapatalk1406058084.713446.jpg
    #1
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  3. epox
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    epox Active Member

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    [Jul 22, 2014]
    you might have damaged the transpondrer in the key fob, is the new blade back on the original fob?

    mark
    #2
  4. GazzaA3
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    GazzaA3 Member

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    [Jul 22, 2014]
    Had a new fob with a blank key cut, and inside transferred over.
    I'll get a picture
    #3
  5. epox
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    epox Active Member

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    [Jul 22, 2014]
    #4
    JimS3 likes this.
  6. GazzaA3
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    GazzaA3 Member

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    [Jul 22, 2014]
    Got it apart, what you think?
    ImageUploadedByTapatalk1406060875.846113.jpg
    #5
  7. JimS3
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    JimS3 Active Member

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    [Jul 22, 2014]
    It's in the other half of the key (front half).

    it it looks like a glass grain of rice and is usually set into come resin / glue to hold it in.
    #6
  8. GazzaA3
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    GazzaA3 Member

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    [Jul 22, 2014]
    ImageUploadedByTapatalk1406061090.506861.jpg
    Lights ain't the best!
    #7
  9. GazzaA3
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    GazzaA3 Member

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  10. epox
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    epox Active Member

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    [Jul 22, 2014]
    #9
  11. JimS3
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    JimS3 Active Member

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    [Jul 22, 2014]
    Here you go:

    image.jpg

    It breaks very easily, I usually cut the key casing around it with a Stanley blade, very carefully!
    #10
  12. GazzaA3
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    GazzaA3 Member

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    [Jul 22, 2014]
    Think found it, it's in the originally bit, could I jut use that bit with new blade?
    #11
  13. epox
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    epox Active Member

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    [Jul 22, 2014]
    as long as the old blade section fits on to the new button part,

    mark
    #12
  14. GazzaA3
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    GazzaA3 Member

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    [Jul 22, 2014]
    Is this it?

    ImageUploadedByTapatalk1406062979.009769.jpg
    #13
  15. JimS3
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    JimS3 Active Member

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    [Jul 22, 2014]
    Yup!
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  16. GazzaA3
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    [Jul 22, 2014]
    Smashing, I'll get it back together and try it tomorrow, any other bits I need for it?
    Any special way if doing it?
    #15
  17. GazzaA3
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    [Jul 23, 2014]
    Try it this morning, no good! This yellow light flashing, engine cuts out after a second.

    Any ideas?

    ImageUploadedByTapatalk1406116971.816387.jpg
    #16
  18. epox
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    epox Active Member

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    [Jul 23, 2014]
    try holding the old key with the transponder in it next to the igniton switch and starting car with new cut key.
    mark
    #17
  19. GazzaA3
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    [Jul 23, 2014]
    Will give it a go!
    Does it need the board aswell? With the switches on?
    #18
  20. epox
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    epox Active Member

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    [Jul 23, 2014]
    no just the transponder part i think
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  21. GazzaA3
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    [Jul 23, 2014]
    Okk thanks!

    Will see how it goes!
    #20
  22. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 23, 2014]
    Just the transponder needs to be transferred... I did this on a key swap on mine recently... you need to be quite careful as its easy to shatter the glass pill... I used a jnr hacksaw to carefully cut away the old key around the transponder then using a craft knife I trimmed the surrounding plastic and potting compound to be able to free the transponder...

    I also used a little heat from a heat gun to soften stuff up but don't over do it

    <tuffty/>
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  23. GazzaA3
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    GazzaA3 Member

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    [Jul 23, 2014]
    That seems to dangerous for me!!
    Iv used the old casing with it in still on new fob key, will that not work?
    #22
  24. epox
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    epox Active Member

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    [Jul 23, 2014]
    put the new key in and turn on the ignition, imobi light should stay on, now hold the transponder to the igniton switch the yellow light should go out if it does not the transponder is fooked,

    ps how was the old key nackerd?
    #23
  25. GazzaA3
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    [Jul 23, 2014]
    Trying different postions but still no good so far, the key had snapped off the fob

    View attachment 37140
    #24
  26. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jul 23, 2014]
    If you've used the whole original front section it should just work.
    #25
  27. GazzaA3
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    [Jul 23, 2014]
    Yea that was how I was doing it, going to try it how originally did before got new key cut
    #26
  28. epox
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    epox Active Member

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    [Jul 23, 2014]
    #27
  29. GazzaA3
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    [Jul 23, 2014]
    No joy, tryied it like this, still the same!
    Tryied it like did before got new cut and still the same, Somethink must of happened while getting changed or Somethink!

    ImageUploadedByTapatalk1406129426.409325.jpg
    #28
  30. epox
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    epox Active Member

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    [Jul 23, 2014]
    Daft question was the ignition on with imobi light on? Then hold the transponder close to the lock and see if the light goes out still holding the trans next to the key
    #29
  31. GazzaA3
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    [Jul 23, 2014]
    I kept it in that position in the picture the whole time, imobli light is on with ignition
    #30
  32. epox
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    epox Active Member

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    [Jul 23, 2014]
    Try the same but move the transponder around the ignition barrel, and see if that puts the light out
    #31
  33. GazzaA3
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    [Jul 23, 2014]
    Okk, with the ignition constantly on?
    #32
  34. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jul 23, 2014]
    carefully remove the vial thing from that broken key (best way is to use a stanley to bit by bit cut away the housing until you can free it, dont prize at it)

    Fit it properly to the new key, and try it.
    #33
  35. GazzaA3
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    GazzaA3 Member

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    [Jul 23, 2014]
    I would try that, but the risk of me breaking it would be high!
    So want to take the chance with leaveing it in where it is?
    #34
  36. epox
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    epox Active Member

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    [Jul 23, 2014]
    Ye ignition on
    #35
  37. epox
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    epox Active Member

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    [Jul 23, 2014]
    You should be able to reassemble the key using the existing transponder section.
    #36
  38. GazzaA3
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    [Jul 23, 2014]
    What's the bet place to put it?
    #37
  39. rhinopower
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    rhinopower Member VCDS Map User

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    [Jul 24, 2014]
    Where are you? Might just be easier for someone to code the new key for you.
    #38
  40. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 24, 2014]
    Same position as previously... need to be close the pick up ring on the ignition switch

    <tuffty/>
    #39
  41. GazzaA3
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    [Jul 24, 2014]
    I'm in Devon, Torquay!
    The ring on ignition switch beeing at the end of the barrel?
    #40

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