First problem is, my rear tail light..the one thats in the center of the inside of the window. Works sometimes, other times doesnt work..loose connection? and second, my navi screen stopped working its just black now, but when you hit the top button to make the screen go down, then hit it again for it to come back up, it goes black...then works for about a 1/4 of a second then goes black again..any got any idea why? thanks.

 

The tail light is an issue that we're trying to get a recall or otherwise repair done. Go to this thread here, and follow the link to register a complaint.
https://g35driver.com/forums/g35-sed...yours-out.html

As for the Nav screen, you're an '06, so you may still be under warranty - don't hesitate to bring it to a dealership and make them fix it.

 

Thanks a lot buddy.