I have an 06 Prius and have been attempting to "register" a phone number into the speed dial. But the 5th entry in the list is blank and grayed out. Is there some way of doing a reset? In searching I found that a similar question was posted a few years ago in a thread titled "Speed Dial Stuck" but with no solutions.
Are you talking about the 6th entry on the first screen? I believe that place is reserved for the "last number called" so it give you a "redial" function.
