I reviewed the SoundLinq and another product from Peripheral (pxdp2). Trying to be through, I called Toyota. They told me that they do not have one that I could have installed and that if I installed either of the ones listed above, it would void my Nav system warranty. So, now I am left with the question of how important is it for me to have iPod control from my Nav system. I am rather concerned with Nav system failure and the cost of getting it repaired.