I have an 06 coupe with nav in it and i have two problems:
1. The nav wont go back down
2. The screen wont even turn on

i bought the car like this and for some reason the previous owner ripped out the dvd player...Does the nav get its power from the dvd player? Cause my buddy has a BMW and if his isnt hooked up then the screen wont work. Is that why i have no power to the screen or the button on top?

thanks