I am trying to remove the radio to install an adapter for aux input. I bought the keys and had trouble getting them to click, but after searching some forums, I sanded the grooves and they seem to click. The radio/ stereo still does not budge at all, I even tried removing glove box and pushing it from back and it's like it is bolted in! I don't know what else to try...

 

Hi insert the keys according to the writing until they click take 2 flat screwdriver above medium size and try to pull them from the sides.Be careful not to damage the front cover be rough a little that's how i took mine out.

 

so the problem was the ebay keys I bought were awful. I went to the dealership and they used their keys for no cost and radio came out so easy it was unbelievable. While radio was out I fixed my keys to make them work next time. The $43 adapter I bought off ebay works like a dream and I can't believe how good my radio sounds and it is only the symphony II. The adapter lets me now have the USB and aux cable for my mp3 player.

Another thing I learned was that the glove box often breaks on these cars because the little door damper that makes the door come down slowly quits moving easily. So I removed it, put a couple more holes in the bottom and cut off a big of the rubber plunger thing inside it. To see better what I am talking about, youtube A4 glove box repair.

 

If you are looking to buy a set of radio removal keys for an Audi/VW I recommend the Metra brand keys sold at EnfigCarStereo.com. They snap in quite nicely, the radio comes right out and they are easy to remove from the radio once it has been removed.

 

once i had radio removed, I looked at radio and ground down shitty keys I got from ebay to make them work next time, they were very off