I just replaced the DVD in my 2002 LX470.
It was on sale at the Dealer for $199.00 plus tax.
Had trouble getting the old dvd out but kept moving the switch back and forth until it spit the old dvd out. The new DVD loaded in a few minutes and seems to work just fine.
:D
I had an experience with a CD player (installed backwards) in my Cadillac. It was jammed. I kept at it until it gave up!