I have a 2005 Highlander Limited with the JBL premium sound system. The radio changes stations by itself. I make sure that when it is happening my hand is not near the steering wheel mounted controls, or that the seek or scan is not engaged. I had it into the dealer 3 times and they can never find anything wrong. It does not happen all the time but when it does it gets so bad you can not use the radio. Has any one out there ever had the same problem?