i highly doubt it, especially if it's touch screen. is it? i've never heard of a stock system allowing you auxiliary inputs, the only possible way i can think of, is if you're lucky there is a video wire that you can clip and pass through a switchbox to switch between navigation video and the dvd player video, but you will also need to tap into the sound system which is even more hairy as integrated as mercedes are, since the stock headunit surely doesn't allow you aux inputs, you couldn't just run the sound, you'd need at least a seperate amp to power your speakers for the dvd player, not to mention having to pull all the wires for the amp and the speakers, pain in the ass just thinking about it, but you pay for a luxury car, you pay with a luxury pain in the ass when it comes to customization //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif