If your GX470 radio has Bluetooth integration then it has the latest software andd supports Sirius or XM right out of the box. Just go to Toyota buy the Land Cruiser kit and follow the directions, with one exception. The wiring harness must go down the drivers side of the car, as the GX has the amplifier under the drivers seat. Also, the Sirius/XM tuner fits well rigt behind the trailer hitch relay in the left luggage compartment panel.
I just installed it this weekend. It took about 2 hours and was really not hard to do. The radio is fullyy integrated. Pressing the AM button gets you SAT 1-2-3 presets. I don't know why Lexus doesn't advertise the fact that this vehicle is Sat ready.
For older vehicles the only other integrated option is vaistech for XM only.
05-06 Gx470 Sirius Xm Integration
in 03 - 09 Lexus GX470
Posted
Will you post the dealer name where you purchased the kit? I've only gotten don't knows at the dealer I talked to.
Thanks