yuccan

Found Joe on EBAY that offers replacement nav units. Drove up there and it was a Lexus dismantling yard. He had a used Nav from a 2003 and plugged it in, worked right away. Is slightly different than the 2002, but nothing to bother about. 1000.00 and problem is cured. Expensive but the dealer was way, way higher.

Has anyone else had this problem? Yes, I'm having the exact same problem on a 2002 rx300. Dealer has quoted 2315.00 to replace the rear Nav ECU. Im looking for alternate solutions. ECU may be available via junk yard or new third party. Also, several folks here also have installed the Pioneer Nav system. Will update when we make a decision. Anybody's comments are welcome. I'm going to guess that the Laser reader device in the DVD Reader is the culprit. Unit is made for Lexus by Denso. With nothing to lose, I might take it to someone good for actual repair.