I'm new to LOC...Have a GX '03 with no major problems until last week. My wife turned off car, removed key and the radio, and panel lights stayed on, along with A/C. Tried resetting, took out fuses, etc, but no luck. Dealer has spent many hours trying to identify problem (ruled out ignition switch). They say the factory has NEVER seen this problem before! Their recommendation is to replace the entire wire harness. Estimate would be aprrox. 6K to replace. Anyone ever hear of this problem before?