My navigation screen is say no data contact dealership. Is there a way to fix this without going to a dealership.

 

Sounds like the Hard drive for the navigation went out. You can probably replace the hard drive yourself. What year is your LS? I actually have a spare hard drive from a radio that I purchased a couple months ago. I have a 2010 LS so it should work with the 10-12. I don't know about the 07-09.