You need the manual. especially the radio manual. IIRC, there is a specific radio unlock code. This is to prevent radio theft. It needs to be reentered when the battery is disconnected. There is usually a card with the info tucked into the manual somewhere. regarding the door locks, that should be listed in the manual also. But I have never heard of this happening to door locks.
You require the radio activation code entered in order for the radio to work. This is normally put in place as an anti-theft protection for the radio. The code should be in your vehicle owner's manual. Alternatively, you could visit your nearest manufacturer's service center to get the code.