Bought a 2014 Sienna XLE in Jan 2015. Was told the car was "XM ready". Ended up buying the XM Tuner Base Kit, and the XM Fit Kit. I downloaded the instructions from this site to get an idea what the dealer would have to do to install it. I was shocked!!! I've owned Toyotas forever and have always had good luck with dealer maintenance and repair, but that has always involved the engine, trans, AC, etc..... You know: the mechanical stuff. I'm a little worried about asking them to do this disassembly, installation, reassembly of the body, seats, dash, carpet, door jam, rear hatch etc and tie this thing into a already complex electronic radio, bluetooth, navigation, system. Has anyone out there had this done? Did they get your Sienna back together again satisfactorily? Does your radio, bluetooth connections, and nav systems all work OK? And the Big Question: What does the INSTALLATION cost after already paying a bunch for the parts?