Here is an additional remote we provided for a nearby dealer. On this era VW/Audi/Skoda the transponder chip that the immobiliser checks for is separate from the remote PCB. Although it is possible to re-use 2nd hand remote parts on these, it can be a false economy and we will normally only use new components.
![Replacement Audi TT key](https://www.ross-deanlocksmiths.co.uk/blog/wp-content/uploads/2020/06/IMG_20200625_115859-1-768x1024.jpg)