Steve1031 Posted November 22, 2020 Share Posted November 22, 2020 Hi all , this is my daughter's car 1.2 mk6.5 and it had immobilizer issues before where it would do nothing then start ok , now it starts ok most of the time but if you waggle the key when the engine is running it sometimes cuts out and the immobilizer light flashes , is this a worn key , worn barrel or something else , I did swap the transponder reader about 9 months ago when it had problems before , any help great fully received as my daughter is moaning like I have cut her arms and legs off . Quote Link to comment Share on other sites More sharing options...
st line x 140 driver Posted November 22, 2020 Share Posted November 22, 2020 Does it do the same with the spare key. Immobilizer worked from key signal, Nothing to do with lock/barrel. Has the key been mistreated chucked on the side at night when returning home from going out/stood on etc.? Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted November 22, 2020 Share Posted November 22, 2020 If the barrel is very worn I suppose the chip could move far enough away from the pick-up ring to lose sync. If you've got two keys, hold the spare one against the pick-up ring while waggling the one in the barrel and see if it still cuts out. Quote Link to comment Share on other sites More sharing options...
CraigJ123 Posted November 22, 2020 Share Posted November 22, 2020 Why waggle when engine running? Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted November 22, 2020 Share Posted November 22, 2020 4 minutes ago, CraigJ123 said: Why waggle when engine running? I did wonder that lol, presumably the key is getting waggled by centripetal force as they're going round corners and the weight of a keyring pulls it side to side. Quote Link to comment Share on other sites More sharing options...
st line x 140 driver Posted November 22, 2020 Share Posted November 22, 2020 Never come across worn barrel. The pin tumbler mechanism would stop key from turning. Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted November 22, 2020 Share Posted November 22, 2020 It's a Tibbe key, you can start these with a teaspoon handle as they age! Quote Link to comment Share on other sites More sharing options...
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