Hi all ...many thanks for allowing me to join your forum,I have my daughters 2005 nissan micra to replace the battery . Not having any radio code info with existing paperwork can someone help me please. I had the radio out and got the number I think is required ..BP536556440106 and no. On other side is LP 8 (or poss.6) 6 635 123 522 1 . Can someone help please ....my grateful thanks Harry