I have a 2005 430 SC that I bought 2 years ago as a CPO from a Lexus dealer. I wanted a satellite radio installed in the car. A local stereo shop installed a tuner and the other necessary parts. The satellite radio works except for the following problems: 1. Occasionally the radio stops playing, 2. Sometimes the sound goes off, 3 Sometimes I cannot adjust the volume, 4 Sometimes the navigation system stops working. Under warranty Lexus changed all of the components of the navigation system. This did not help. Lexus thought it was the satellite radio tuner causing the problem. I had the stereo shop disconnect the satellite radio and the radio and navigation are working fine now. Do you have any suggestions how to have it all working. I noticed you have a "vias Sirius radio. Do you have any of these problems.
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