Hi Indywk2, I know your issue was a while ago but I'm experiencing the exact same problem & interested to find out what your solution was?Today when i left to go pickup my girlfriend from the airport my unconnected 8.4 stopped working on startup. Took it to the dealer and they told me maybe disconnect the battery to reset it so i did. Now my air conditioning is all messed up. Startup the ac will work for about 30 seconds and then the front and rear defrost turn on and you can't change them. I have to drive home from vacation for 13 hours and would like AC. Any ideas to remedy this. The dealer says they can't meet my need by me leaving on Tuesday.
Any fuse recommendations to pull so this wouldn't happen?