Immobiliser Transponder in Key...

[banburyv6]

Hi,

I recently bought one of those fake key cases off eBay to replace my battered and selotape-covered spare key (if you're interested - they're actually pretty good: link).

I set about transferring all the important bits to the new case, key blade, remote electronics, all went smoothly.  That is until I came to remove the immobiliser transponder from the original key.  It was glued pretty solidly into the body of the old key and, like the idiot I am, I set about it with a screwdriver...   

You can probably tell what's coming next   

On removing the transponder I realised I'd cracked off a bit of the glass covering, but I figured it would probably still work so put it into the new key case.  Lo and behold it doesn't still work at all, and the engine only starts for a second before turning off and whinging about the immobiliser.

Is there anything I can do about this?  Are there any ways I can get a new chip and code it it the immobiliser without going through the stealers for a complete new key and paying hundreds?

(Before anyone suggests it, yes I have considered removing the working transponder from the other key and taping it under the dashboard... shortly before realising what a stupid idea that would be...  )

Any advice gratefully received!

Cheers,
Ed

[old_n07]

Have a word with Kalu on UK-MKIV's he might be able to get a crypto chip but failing that you will need a new key (bottom half) and have it coded to the car

Neil

[banburyv6]

Thanks I will have a go contacting Kalu.  I think you mean top half of key though, that's the bit with the transponder chip in it?  Hopefully I can get it sorted without it costing hundreds (just had new bushes, service, haldex oil/filter, clutch master cyl... can do without much more at the mo!)   

Cheers,
Ed

[old_n07]

Nope, I meant bottom half - the bit with the key blade attached is where the transponder is. The top half is the remote.



If you do get a new lower half make sure you get an un-used (new) one not second hand as if your car is immo 3 the key can only be coded to one car so if it had neen used before it won't work in your car.

Neil

[dubcruiser]

Yeah its the bit where the button is to flip the key out (also where the VW badge sticks to on the other side!) 

[banburyv6]

Yeah - we're all talking about the same bit, I thought that was the "top" of the key but I guess it depends which way up you hold it   

[topher]

It was glued pretty solidly into the body of the old key and, like the idiot I am, I set about it with a screwdriver...   

I know I shouldn't laugh but...

hope you get it sorted fella