Car radio does not work recently after getting new battery It asked for a code ... I tried a couple... now it says OFF

Here is the answer to the best of my knowledge. This applies to any body that has the need to get the code from the dealership and requires to pull out the radio and look up the serial number. The process is very simple, just follow these steps and you'll be on your way to listening to your radio again. First of all don't think you need to unscrew anything. The wood panel sorounding your stereo snaps out by pulling on it or using a flat screw driver at the corners. Once you have taken the panel out, you can see that the radio is held in by 2 hooks. Push up and pull forward slightly. You don't have to pull out the entire radio because you can see the serial number on the top surface very easyly. Write down the number next to where it reads s/n. Once you have the serial number, call the local dealership and give them your serial number. They will in turn give you a four digit code number that you will enter on your radio. One thing to note is that if you have entered the wrong code number 3 times, your radio would lock up and it would read "OFF". To unlock it, simply park your veichle in a safe place and leave the radio on for about 1 hour (no engine running just click the egnition switch to operate the radio). After one hour, the radio resetes and will aks you again to enter the code. start entering one number at a time using the first 4 buttons. Example, if your code is 4538, you would push button 1 four times to get to the number 4, you would push button 2 five times to get to the number five and so on.. After you have entered the correct code, push the cd button and there you have it. I hope this helps.

When you say "accessory on for one hour" what do you mean? Let the radio stay on for one hour with the OFF in the display. I have the code but my radio says OFF now that I have had the alternator replaced.

Per dealer, they can't look up code by VIN. They need the radio serial number for that & they need to pull the radio ($50 labor) to get it. Also, to get "code" back from "off" you need to run the car with an accessory on for one hour. This will reset "off" to "code" and once you have the correct code, enter it then.

Go to the dealer with photo ID, title, and registration, and they can look up the code for your car based on its VIN number. Make sure they write it down for you - they can hit you for up to an hour's labor for doing this, so you don't want to have to pay them for it again in the future.