Tl*the contact owns a 2003 acura mdx. the contact noticed that the navigation system along with the defroster was inoperative. in cold weather conditions, ice builds up on the windshield, which causes reduced visibility. the dealer stated that it would cost approximately $3,000 to replace the entire navigation unit. the vehicle has not been repaired. he filed a complaint with the manufacturer. the failure mileage was 75,000 and current mileage was 84,000. updated 12-08-08 *bf updated 12/10/08. *jb