I am new to this forum. I just bought a 2008 4runner Sport Edition in June. It has the JBL synthesis sound system, and I am having the same problem!
I called the local Toyota dealership, and talked to the service department. They told me to bring it in to have it checked out. I tried to explain that the problem doesn't happen every time I drive the vehicle, but it seems to happen every 3 days or so.
I want this to be hassle free, but I am afraid that I am going to take my 4runner in and if it doesn't have the problem, they won't replace it. Does anyone have any suggestions for me?
By the way this forum rocks!! I have been following it since before I bought my 4runner and I am excited to be a member here!