The only time the display works is when backing up or playing dvd, other times it just blank

Idid see a service bulletin concerning radio. sound and display lost after engine crank. turn key off, then back to accessory position, radio functions work. the fix is to reprogram radio with new software. I also saw several codes listed for radio, they were manufacturer specific codes. did you check for codes?

Put in a CD that is fairly new that you have not recorded and see how it plays. If a new CD plays well then it is possible that there is an issue with either the CD itself or the head within the CD may be out of alignment. If all else fails then take it to a reputable audio installation facility or the Infinity dealership in your area. Depending upon how you feel about your Infinity, you could do well with a third party CD player. Are you having any other audio problems?

I'm afraid I can't help but would love to hear if anyone can. Mine just went this week on my 2006

Did you ever find a solution for the QX56 nav screen? Mine is doing the same, I have been told it is navigation unit or possibly the screen. Was wondering if you had any luck before I pay money for something that doesnt fix the problem. Thanks

I know this is an old thread, but my 2006 325i Nav screen went bank also, but the radio still played. I noticed the glove box light and trunk light did not turn on also. I was told from mechanics is was probably a CID module for $2200, even though I mentioned the glove box and trunk light light were out and specifically inquired about a fuse. The mechanics never checked the fuses, because I checked my fuses in the glove box and found the fuse 61 marked with a BMW symbol that looks like light bulb was blown. The Nav screen started back up once the fuse was changed.

Did you take the time to call their owner relations number in the manual, and talk to anyone at manufacturer? Go around the dealer.

My husband disconnected and reconnected the car battery and voila' the problem was fixed.  I've had so many software issues with this car - I'll never buy an infiniti again!

The same thing happens with my 2005 Jeep.

Check for blown fuses