I have a 2010 ES with nav. I have an Iphone 4s attached via bluetooth and then have a 16 gig Ipod attached to the USB port on the car via a wire. This arrangement worked for several years until a few months ago when I have been unable to use my Ipod because I receive the following error message: Connection error. Please consult the manual for instruructions on how to reconnect the USB device or Ipod." Once and I while my Ipod works, but most of the time I receive the error message. The only fix I have found is that once I receive the error message, if I turn the car off at a stop light, and turn it back on, the Ipod works, however, this is a pain. Any suggestions?