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D2 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc

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Old 25th June 2016, 10:37 PM
A8 3.7 A8 3.7 is offline
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Default ignition barrel

Evening All,
I hope someone can answer this. I have to replace the ignition barrel on a 97 pf 3.7, if I replace the barrel and key with a secondhand unit do I need to reprogram or replace anything else for the immobiliser and remote to work.
Thanks Alun
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Old 25th June 2016, 11:01 PM
MikkiJayne MikkiJayne is offline
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The immobiliser is coded to a transponder in the key. In the remote keys it's located in the front half next to the key blade itself and is either a green glass cylinder a bit larger than a grain of rice, or a small black rectangle about 12x3x5mm. If you swap this to the new key then it'll still be happy. The alarm and remote is coded to the board inside the key. Either you can swap this over, or there is a procedure to teach it new keys.

Have you considered a new barrel? Audi can supply a new barrel matched to the existing locks so you don't have to mess about with new keys and can retain a single key for all the locks. My fairly old copy of Etka shows it at £90, although that may have gone up considerably as a lot of D2 stuff has done. There are two variants - 107905855C and 107905855G. Audi should be able to tell you which you need based on reg number / vin and should also be able to get your key code from the vin too.

Last edited by MikkiJayne; 25th June 2016 at 11:04 PM.
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Old 26th June 2016, 12:54 PM
ainarssems ainarssems is offline
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The blade can be changed on the key so easiest way probably to keep old key body and just swap the bade over.
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Old 27th June 2016, 10:00 PM
A8 3.7 A8 3.7 is offline
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Thanks for the info guys.
Alun
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