Is this a dealer only item? It is located in the console and only works if plugged in sometimes and in the right position.
I saw in another thread that replacing it is $120 from the dealer- junkyard part $92; you can install an aux aftermarket unit that the radio thinks is a CD changer for about a third that or even less... Metra Axxess Tyip 01 Toyota Wire Tunes Control iPod from Factory Stereo New | eBay