I need to obtain the 4 digit security code for my original Symphony II headunit, which I've sold via eBay. I've replaced headunits in my previous Audis and and when I've sold the original unit, I've just given my registration number to the dealership and they've let me have the code. However, I've just called Walton Audi, where I bought my car and they said I need to take the car in to them. They wouldn't tell me what the code is, which is obviously for anti-theft reasons, but they have all my details on record saying I'm the owner of the car, so surely they should give me the code?! The woman I spoke to said I need to take both the car and the headunit in and they'll need to look at it. Then I asked if I could give my name & the VIN and reg no. of my car to the guy who's bought my headunit so he can take it into a dealer near him, which she said should be ok, though she didn't know what a VIN was... Anyway - is this now common procedure? PM me if you can help!