Lexus auxiliary interface Most Lexus radios have Cd changers ( CD ) and Satellite control ( Sat ) or Aux buttons they are use for cd changers, Satellite or rear factory DVD, if any of this are free we can use that plug on the Lexus factory radio to install an auxiliaryaudio input ,interface adapter, input converters are designed to convertthis ports of the Lexus radios into auxiliary audo input. Devices such as iPods iPhones,Dvd, Mp3, can be added to the Oem Lexus radio this is not a wireless transmitter or fm modulator this technology maintains full function of all Lexus factory built-in steering wheel and rear seat controls..check your factory radio for this buttons before you pick the aux interface If you need help finding the correct auxiliary interface adapter for your Lexus e-mailus or 888-2310395 Lexus ipod input interface