I have a 2005 RX330 that is fully loaded (Navigation, Bluetooth, steering wheel controls). About 6 months ago almost all of the technology stopped working. The navigation ask for a repair disk. The bluetooth stopped working. The radio still works, but recently it has been spotty, like you will turn on the car and the radio will not work, and no matter how much you turn the volume up or down no sound will come on until you turn the car off and turn it back on. Any ideas?

 

Have you verified that all of the audio system connectors are snug and tight?

 

The Navigation, radio , bluetooth etc will throw a Diagnostic Trouble Code. You or your mechanic should scan for these codes and write them down.