When I drove off the Dealer's lot the USB drives where working with my Iphone 3G. After playing around with BT, USB, Sirrus and other various settings and configurations the USB ports and Bt sopped working.
A quick reboot by removing the number 29 fuse (and waiting 20 secs before re-inserting) BT and USB were working again.
So far I've confgiured BT/USB for 2 iphones, 1 9700 BlackBerry cell (BT works awesome for phone and music), 1 USB key with Music and pictures, HomeLink, MyKey and door keypad.
After rebooting and finishing my configurations, I did another reboot. Othen a few quirks, it's stable.
We should get paid for QA'ing their systems!