Should have been stuck in your owners handbook or the folder it came in.
Take to dealer and ask for code to match your VIN.

Cheers, Peter.

Go to (or call) the dealer who changed your battery. They would have
had to retrieve the code for your radio to reset it afterwards. They
probably still have it on file.

If that is not an option, go to any other Volvo dealer. Some may try
to charge you to retrieve the code for you, some won't in my
experience.

There is no default code by all accounts, nor can the dealer change
it. They just have to find out what the original one is and type it in
after reconnecting the radio to the battery.

(Keep a note of it, but not in the car! :-)

-Peter

sometime does volvo have the code in a database ,

otherwise can you order through the serienummret that you can read of on the
sterion

then will volvo logging to an database there many volvo&renault codes stands

here in sweden it cost volvo about 12$ to search for an code and they takes
aboute 16$ from the customer

but if we have it typed in our database the customer often receives it for
free

against identification

with kind regards  : Volvo Worker

Called the dealer and he gave me the code from their DB