Hi, Sorry for posting in the wrong section!
Maybe I should have provided a bit more information. It's a 2007 Lexus IS220D.
My DVD changer packed it in and I bought this whole unit off ebay. Everything else works including the radio, except the DVD player.
I don't think the blue lights mean there is a disc in there. Normally when there is a disc in there is a description where the number is.
Sometimes there is a whirring noise when I try to load a disc, before it gives up and the 'DVD error' message comes up.
As you can see in the picture, the slot selected is number 2, it won't let me select another slot, just goes back to 2 if you press another number.
Thanks