If this is a factory installed moonroof, your best option is to take it back to the dealership for repair.
As for cost, it would really depend on what the problem is. I would recommend that you take it in to get a diagnosis and go from there.
New from Askpatty:
Ask Patty is announcing CarBlabber. It's car reviews for women by women like you!
What does your car mean to you? Do you love or hate your car? Is your car a fashion statement or a pile of junk? We want to hear the good, the bad, and the ugly about your car.
Ask Patty is offering a lineup of amazing products as prizes to CarBlabber members (and signing up is totally free!). All you have to do is create a profile, review a car and add a photo to your review!
Sign up at www.askpatty.com/carblabber
〉 Answered on Aug 31st, 2007 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines