You really do need the serial number. Usually, getting the radio out is not a big problem. You may need a couple of very simple special tools which are little more than shaped wires, available at motor spares places. For example:

tinyurl.com/kw22wmy

Cost: £4.69.

And here's a video showing how to do it:

www.youtube.com/watch?v=tfS1dDxmNXA

After that, when you've got the serial number, if you cannot find out how to get the code, post here again and someone will help.

Edited by FP on 19/04/2017 at 12:25