Nissan Repair Questions? Ask a Mechanic for Answers ASAP
If the CD will not eject, and you did not force a CD into the unit, then you need to perform a hard reset to see if the mechanism will reset itself.
To do this, it requires you to disconnect the battery for 5 minutes and then reconnect it. Your trip meters will reset and you will lose your programmed radio stations when doing this, so write them down if they are important.