I had a new car battery fitted to my Nissan Juke. When I collected it the radio was no longer working as it was flashing for a Radio code. Did not understand what that was discovered I should have been given this when I purchased the car. I googled radio code and found this wonderful website and instructions on how to find radio serial number to enable me to give this company details for them to provide me with the correct code to unlock my system to play radio, C'D's and connect my phone again. Once I provided all the relevant details and paid I received the code by e-mail and all is well. Hurrah well done,great efficient service.