I have similiar issue with my 08 350. I have set both postions. However when I turn on the engine, sometimes potion 1 works and some times position 2 works. If one position work, it will work for a couple of weeks.
I haven't really start diagnosing this issue. I am going to disconnect the negative of the battery for about 10 minutes and reconnect it to see whether this can be fixed or not. If it can't be fixed I will bring my car to the dealer. Buy the way, I have bad experience with the dealer and I don't go there if not absolutely necessary.