Replacement Key - Coding a Key

[Duke147]

Well our car came with just one key and I was going to visit Audi for a replacement and was fully expecting it to cost over £200. But reading other threads, firstly @spartacus 68 recommended a VCDS and then @WELSHVIKING mentioned he had coded a battery to his vehicle using his Launch CRP123E.

I never even knew batteries needed coding, but if it can code a battery, perhaps it can code a key fob?

If I can save the cost of a dealership key coding, then perhaps a VCDS is worth purchasing, like the Launch CRP123E or similar if anyone has experience.