when it happened to me, someone told me to go to the nearest dealership, give them the VIN of the car and (if it's still the stock radio), they can give the code to you at no extra charge (dealership policies varies, so i'm not sure about the ones near you) and that's what i did. you maybe able to call them but some of them might not give it to you over the phone as they would think that the you might have stolen or might be planning on stealing one.