thanks for the help, sorry about the cap lock. will i did take it to the dealership and they said i need to replace the ecu, that would be around $1600. that is to much $$, and i am trying look for use one and still will cost me around $800 + the updated dvd. do u have any info i can find a good deal on a use nav ECU. or any idea of repairing the one i have. everything i check on the system is working it just keep telling me no disk detected. take to the dealership mean $$ down the drain.