I purchased a new navi unit from ebay ( user id : daimlerfinancial
). I ordered it off ebay ( saved me 60 bucks ) $730 out the door shipped. I paid asap... two days later it comes. The install was a total joke.. so simple... popped off a couple of clips, used a 7mm to remove the old ra3 unit. Then I took out the vents and put them into the new housing.
When doing this install remember to plug in the dark red plug ( some people already have it like plugged in , like I did b/c I have the 911 assist).
My eco button does light up and work correctly btw.
Here are a few pictures : I hope this helps - Ill keep you guys updated if anything changes.