with only key number 2 there is the annoying announcement each time i turn the audio dial to tell me what i am on. for instance it will announce "XM channel 7" or the name of each song on my ipod as i spin through the song or albums etc. i can't figure out how to stop it other than take my wife's key. even the dealer was no help!

 

I think the setting you are looking for is on page 93 of the Navigation system manual. That should turn off any any voice feedback when selecting items using the dial. These settings can be changed under the main setup screen.

There's also a voice feedback confirmation setting (page 101, Navigation manual) that will turn off the repeating of the voice commands you use, but it didn't sound like that was what you are looking for though.

Hope this is what you're looking and helps.

Interface Dial Feedback
This setting allows you to control when (and if) the system will read the current selection you choose with the Interface Dial. The purpose of this feature is to minimize the need to look at the screen while operating the dial. You can set the one of the three settings explained in the following table. The factory default is AUTO.

Setting - Degree of assistance
ON - When selection is made, the system always reads what is selected.
AUTO(factory default) - The system reads selection only when moving
OFF - No voice assistance when selecting.