Google turned up this link.
http://satelliteradio.digitalinsurre...t_decoders.php
Go about 2/3 down on the page.
XM Direct Toyota/Lexus Smart Digital Adapter
The XMDTLK smart adapter will add XM Satellite Radio to your "XM Ready" Toyota or Lexus factory radio. It requires the XM Direct universal tuner box, which mount out of sight for a clean, installed look. If your late model factory radio displays the XM Radio logo, it will be compatible with this adapter.
Features:
Allows XM service to be seamlessly installed into the interface of satellite radio ready car stereo
Works with Universal Tuner Box to control XM channels using your existing XM Ready factory car stereo control
Doesn't change your car's interior
Installs easily
MSRP: $299.99 USD Available through Toyota/Lexus Dealers