You need to have the Mark Lev system to play DVDs. I just got my 2006 GS300 wth Nav and Mark Lev, it will play DVDs AND contrary to popular belief the car doesn't have to be in park. While at a traffic light, you can depress the emergency brake lightly and the screen will change to the movie! Of course once you move the car and release the e-brake the screen goes back to the Nav screen or whatever other mode you were in. And BTW, the movies are great, 7.1 surround; 330 watts, 11 channels, full wide screen; 14 speakers, need I say more. :D