Ian P

LX470 MY06 (Recently purchased) unit under drivers seat does not seem to be working, not reading the DVD. DVD appears damaged and have tried a new one, still no good. It has TOYOTA sticker on it with the numbers 86841-33070 and 462100-0674 . Is this original? Is it repairable or should I seek a replacement from a Wrecker? Sydney/Newcastle. I have an '04 Sahara as well, and the unit looks similar, are they interchangeable? Appreciate any advice.