Thank you for responding. This is where I have the problem. When I purchased the car (second hand) the dealer fitted a radio from another Volvo he had because the one in my car was broken. As a result, though I do have the car's relevant documentation and the original purchase receipt, the radio fitted doesn't correspond with the vehicles details. Ahhh well, decoding will have to do. Dealer says he can't help as he's not a main agent for Volvo. Thanks again for letting me know though.