Sounds just like a Volkswagen stock radio. I don't know if they are the same but usually on the radio itself you will have to pull it out there will be a VIN number on the metal of the radio you'll need that. Next you'll need your VIN of your car. You'll need to call a dealership with both and see if they will give it to you over the phone. Know this if your car and radio do not match up they wont give you the number. I had to do this when i changed the battery on my Jetta. They may make you come into the dealership and then give it to you