hi everyone! I am new to this forum and I am coming up with a problem. I changed the battery on the radio and now it asks me for a 4-digit unlock code. I called the dealership office and they asked me for the amount of 200 RON for unlocking (around 40$). I did a google search and this site appeared to me : nissan What do you recommend me to do? Thanks in advance.

There is radio decoding software out there (and even Facebook has quite a few links to people who can supply you with a number) but either way you will need the serial number from the unit which means removing it from the dashboard (unless you have it written down somewhere)