HELP???? I am having a problem with my nav system. It cuts out and says "check system" or "not connected to external system" or "check air conditioner connection" I have no idea of what is going on. I haven't taken it to the dealer.

This is a 2004 LS430 with 81,000 miles.

 

i wish you where in the area, Naperville in IL. i need some extra info about your nav system issues to be able to help you. i could call you also if you want me to. check with me before you take the vehicle to the dealer.