Hi, I'm having trouble opening the the nav dvd unit under the seat. I want to replace the dvd with a newer version but can't get the unit to open. Should the ignition be on or off. Do I simply press the button or hold it in? Tried several ways but nothing happens. Anyone else have this problem.

Ignition needs to be turned to "Acc" or "On". Then, if I remember right, hit the "Open" button to open the DVD door, then the little "Arrow" button to eject the DVD...

Got it open. Just stuck from not being used. Thanks for the info, worked good.