Help, my G has a low idle all of a sudden and almost kills itself upon start...could the heat be the issue or is something about to go out? Any help appreciated!

Yes I have searched and tried the idle position reset procedure...

It started after I had the battery disconnected for a day and a half when trying to figure out how to install my Double Din..


http://youtu.be/NO3fx3iPn_U

What heat? Try the idle reset again, from your description you're ECU has forgotten how. If that doesn't work drop by your local Nissan dealership and have them reset it for you....takes 10 seconds. Now you know not to leave your battery disconnected for more than an hour.
Nice coupe....
Gary

Thanks Gary, will Nissan/Infiniti dealership charge me to reset it though?

"accidentally" include your new DDin in your video?

I'm sure they'd love to charge you a diagnostics fee to do the procedure... Try doing it again