I have a 2000 audi TT and the deck in the changer will not stay. Every time that i press the deck into the changer it pops back up. I dont know if there are locks that are broke or stuck. Wasnt sure if there was a known problem.

 

mine you have to push it in, then push it towards theleft and it will CLICK. when you want to eject it you have to pull it back towards you (assuming your in the driver seat turned around) and it will pop back up. Hope this helps.