right what you can try to do is disconnect the negative side on the battery and then remove the interior light fuse then reconnect the battery and then put the fuse back in, see if that works to resets it because all the units can get confused on the i-key micras or even spike the ecu!, if not you might have to get it taken to nissan (if its still under warranty?) and just stay it wouldnt start in the morning DONT MENTION how you fitted the K&N 57i induction kit by disconnecting the battery as you might have to pay to get it fixed
edit: also when you turn the key from on to start position do the lights on the dash go dim if so try charging the battery ive had that happen before