Playing DVDs in 2006 S350
Hello everyone. I was hoping the collective knowledge of this site might be able to help me out. A friend of mine just recently purchased a 2006 S350. Basically his problem is that everytime he wants to watch a movie on his system (I'm guessing it's a DVD/Nav combo, I haven't seen it in person yet) the screen puts out a message that says something about dimming the screeen so as to not distract the driver. I know that this is a safety feature and most of the time it's something simple like a wire that's attached to the parking brake. I was just curious if anyone was in a similar situation and found a solution. I was trying to research his problem but I don't know if it's because he has a new car or if the system is new, but I haven't found a lot of information on it. My other question is, is it possible to add additional headrest monitors to the car without too much trouble. Thanks in advance for any help you can provide.
-Oliver