I had my car in the garage this week to replace the voltage regulator and when I went to leave I saw that the radio code needed to be reentered, so I tried the one I thought was it, but it didn't take and then one of the mechanics came out and tried two more times and it locked me out. I now have it sitting with key on in position I for two hours as it says in the manual...but I am worried what if I don't have the right code? Any suggestions how to get my radio back on? Thank you!