Answer 1

This woe commonly strikes following a battery replacement for one reason or the other. This requested unlock code is an anti-theft measure taken toward discouraging car stereo theft. The following are steps one can or is to take for assistance with the unlock code issue.

1. Visit your dealer
2. You dealer will have to verify ownership of the vehicle
3. The dear (who is networked to virtually all stereo manufacturers) will then hook up the stereo for remote code read or reset by your stereo manufacturer. You stereo will then soon be reset or code read) and ready to be reprogrammed (the anti-theft lock code) and reused.